SMARCOS PHILIPS RESEARCH LABS Educational Final Report Master ThesisNiels Molenaar


Published on

Published in: Health & Medicine
  • Be the first to comment

  • Be the first to like this

No Downloads
Total views
On SlideShare
From Embeds
Number of Embeds
Embeds 0
No embeds

No notes for slide

SMARCOS PHILIPS RESEARCH LABS Educational Final Report Master ThesisNiels Molenaar

  1. 1. Empowering Diabetes patients,support in making healthy food choices;Help diabetes patients gain insight in the healthy food intakeby giving food information in the supermarket Final Master Project Draft Report M2.2 14-04-2011 Niels Molenaar, M22 Coach: E.I. Barakova M22 Assessor: S.A.G. Wensveen Faculty of Industrial Design, University of Technology, Eindhoven Brain, Body & Behavior group, Philips Research, Eindhoven Philips Research Coaches: A. van Halteren & J. Lacroix
  2. 2. Table of ContentsAbstract .......................................................................................... 51. Introduction .................................................................................. 7 1.1. Stakeholders ....................................................................................8 1.1.1. Philips Research .................................................................................. 8 1.1.2. SmarcoS ............................................................................................ 8 1.1.3. Personal motivation ............................................................................. 9 1.2. What is type 2 Diabetes ....................................................................92. Research .....................................................................................11 2.1. General type 2 Diabetes treatment .................................................... 11 2.1.1. Interview with Diabetes nurse ...............................................................11 2.2. Effects of food intake on type 2 Diabetes ........................................... 11 2.2.1. Literature on food intake .....................................................................11 2.2.2 Interview with dietician ....................................................................... 12 2.2.3. Dietary monitoring ............................................................................ 12 2.3. Effects of activity on type 2 Diabetes.................................................13 2.3.1. Literature on activity .......................................................................... 13 2.3.2. Interview with physiotherapist ............................................................ 13 2.4. Behavior change strategies ..............................................................13 2.4.1. Literature on intervention ................................................................... 13 2.4.2. Technology versus human effects on intervention ................................ 14 2.5. User interviews ..............................................................................14 2.5.1. Interview goals.................................................................................. 14 2.5.2. Method ............................................................................................ 14 2.5.3. Results from interviews in requirements .............................................. 15 2.5.4. Use of requirements for food focus in project ....................................... 163. Design........................................................................................ 19 3.1. Vision ............................................................................................19 3.1.1. Context for vision ............................................................................... 19 3.1.2. Motivation for vision ..........................................................................20 3.1.3. Concept Requirements .......................................................................20 3.2. Implementation ..............................................................................21 3.2.1. Shopping bag ....................................................................................21 3.2.2. Interaction with shopping bag .............................................................23 3.2.3. Form of shopping bag ........................................................................24 3.2.4. Technology in shopping bag ...............................................................264. Discussion ..................................................................................29 4.1. Relevance of vision ........................................................................ 29 4.2. Application possibilities ................................................................. 29 4.2.1. Different user or context.....................................................................29 4.3. Future research recommendations ................................................... 29 4.3.1. User studies ......................................................................................29 4.3.2. Technological advancements ..............................................................30 4.3.3. Importance of activity vs. diet.............................................................305. Conclusion ..................................................................................336. Bibliography................................................................................357. Appendices .................................................................................39 7.1. Appendix 1: Interview Diabetes Nurse ................................................ 39 7.2. Appendix 2: Interview Diabetes Dietary Expert ................................... 42EMPOWERING DIABETES PATIENTS, SUPPORT IN MAKING HELATHY FOOD CHOICES | page 2
  3. 3. 7.3. Appendix 3: Interview Diabetes Physiotherapist.................................. 45 7.4. Appendix 4: Context mapping exercises ............................................ 48 7.5. Appendix 5: Context mapping quotes ................................................ 52 7.5.1. Interview A; Quotes ............................................................................52 7.5.2. Interview B; Quotes ...........................................................................56 7.5.3. Interview C; Quotes............................................................................ 61 7.5.4. Interview D; Quotes ...........................................................................65EMPOWERING DIABETES PATIENTS, SUPPORT IN MAKING HELATHY FOOD CHOICES | page 3
  5. 5. AbstractThis report addresses the design of a concept that supports type 2 Diabetes patients inmaking healthy food changes and thereby change their food habits. This project has beenconducted within the context of the European SmarcoS project.The prevalence of type 2 Diabetes is increasing rapidly. It is expected that in Europe thenumber of people that have Diabetes will have increased from 7.8% in 2003 to 10.3% in 2025.This increase is mainly caused by an unhealthy lifestyle, such as insufficient physical activ-ity and unhealthy food choices.Patients who have been diagnosed with type 2 Diabetes need to adopt a healthy lifestyle inorder to keep the amount of medication needed to manage their disease to a minimum. Ahealthy lifestyle entails sufficient physical activity and a healthy diet. Currently, many Dia-betes patients experience difficulties in adopting such a lifestyle. To make a change, patientsneed information, encouragement and support to gradually change towards a healthierlifestyle and maintain this lifestyle.Qualitative interviews have been performed to gain insight into the problems that ariseduring this lifestyle changing process. To apply the data from these interviews the MoSCoWmethod was used to turn the results into design requirements. The outcome of these inter-views shows that patients are often in doubt about how healthy a particular supermarketproduct is.The supermarket is a suitable location to encourage people to make healthy decisions, be-cause this is where people decide what to eat. At home people pre-contemplate about whatto eat, but the actual decision is made in the supermarket. The concept presented in this re-port takes this moment of doubt as a starting point to change people towards healthier sug-gestions. It provides support to make healthy food choices at the exact moment of the buyingdecision in the supermarket context where the healthier alternatives are readily available.The concept is a shopping bag that can be taken to the supermarket and be placed in theshopping cart. Products can be presented to the shopping bag. The shopping bag gener-ates visual feedback unobtrusively to indicate the healthiness of a product. Products can bechecked or compared for suitability to the diet, so that an educated healthy decision can bemade.EMPOWERING DIABETES PATIENTS, SUPPORT IN MAKING HELATHY FOOD CHOICES | page 5
  7. 7. 1. IntroductionThe project presented in this report focuses on the development of technology-based solu-tions that positively influence the lifestyle choices of people with type 2 Diabetes. Explo-rations have shown that patients experience many barriers when trying to change theirlifestyle. As a consequence many of them stick to their old habits. Literature shows existinghabits and rituals make it hard for people to change their lifestyle (DeWalt D. A., et al., 2009).Although, making healthier food choices would result in a more active and healthier life withless medication and complications for the patient (Tudor-Locke, et al., 2004).When looking at ways to help people change their behavior, it is important to give theminsight into healthier alternatives, while at the same time let them be in control of their ownlives (Greef, Deforce, Tudor-Locke, & Bourdeaudhuij, 2010). Therefore, the approach used is tosupport them to make healthier food choices step-by-step. In current treatments patientsparticipate in meetings with caregivers to learn how they can change their lifestyle. Al-though these meetings are helpful, due to time constraints it is always based on perceptionof the patient and a small moment in which this opinion is conveyed. By using technologythat is always at hand to provide support at the moment the patient needs it the adherenceof the lifestyle can easier be maintained by small stepwise changes. This is why technologycan make a difference.Based on literature, interviews with caregivers and interviews with Diabetes patients, thisproject specifically focuses on supporting Diabetes patients to make healthy food choices.Patients perceive food as a more substantial problem compared to activity. On the otherhand the caregivers spend more time on helping patients to become more active.Present-day a dietician supports the patient by looking at a patient’s current diet and sub-sequently suggesting alternatives for certain food types. The support is thus based on howunhealthy the food choices are and on the personal food intake habits/preferences of thepatient.Rather than to suggest major changes it is easier for patients to promote healthier choicesby suggesting alternatives. It is important to find a way to suggest healthier alternatives thatstay close to the original choice of the user, even if it is not the healthiest possible alterna-tive. Stepwise offering healthier alternatives over time is part of the concept to develop long-term healthy eating habits.Some healthiness food information can already be found in the Albert Heijn for example withthe “gezonde, bewuste keuze” images. The scale chosen for healthiness of food products isbased on the tables created by the “Voedingscentrum”. This organization has clear infor-mation on specific products you can buy in the supermarket. However, this detailed under-standable information is often not available in the context of the supermarket where theactual food choices are made. Although there is nutritional information on the package, thisis not clear for the patient. The information which is understandable, by the “Voedingscen-trum” is not available in the supermarket, only behind the computer at home. The informa-tion the “Voedingscentrum” actually gives the consumer is too vague: healthy, not bad andunhealthy. This doesn’t allow for small steps in the right direction as they only distinguishthree categories of healthiness.To support people to make a step in the healthy direction it is important to take their cur-rent shopping behavior into account. To acquire a thorough understanding of how informa-tion on the healthiness of a product can be communicated to the user in an appropriate man-ner, we observed the daily shopping rituals. These rituals were used to develop a concept tosupport healthy decision-making.EMPOWERING DIABETES PATIENTS, SUPPORT IN MAKING HELATHY FOOD CHOICES | page 7
  8. 8. It would be a successful design when people intuitively interact with the product in theiralready existing routine, especially when it is taken in their shopping rituals. It will providethe information they need in such a way that they feel informed, not judged, and that it helpsthem to make better food choices and to maintain a healthy lifestyle over time.The report will describe the applied process. The research part of the project focuses onthree pillars: what is type 2 diabetes, what is the influence of food and what is the influ-ence of activity on the healthiness of the patient. We relied on three sources of informa-tion: existing literature, information provided by professional caregivers and informationprovided by patients. After reading the literature of the experts in these fields, caregiversare introduced to look at the problem of lifestyle intervention from their perspective. To setup requirements users are introduced through a qualitative interview to observe how theyperceive and handle problems. This gives an insight in how healthcare is related to the userand where problems occur that can be solved through technology. This generates require-ments that result in a vision. This vision is important to communicate to partners, as this isthe part that can be used in a bigger project. To communicate this vision an implementationis introduced that communicates the vision and user requirements to the stakeholders. Thereport is closed with a discussion about the relevance and possible applications of the vision,also including possible future extensions of the vision.1.1. StakeholdersThis project is part of a larger project focused on smart communication solutions for promot-ing a healthy lifestyle, in which Philips research participates with several other stakeholders.Within this project, with the partners mentioned below, it is important to set a vision andthen communicate this vision through an experimental prototype. This prototype sets outto apply knowledge about health and type 2 Diabetes in an accessible way. By this prototypestakeholders can be inspired about context and technology.1.1.1. Philips ResearchThis project should create a better insight in possible opportunities and problems for theSmarcoS project in the next two years. My aim is to develop a vision grounded on qualitativeand quantitative research, and communicate this vision through a product as an inspirationfor Philips for the next two years.1.1.2. SmarcoSSmarcoS is a research project that involves several partners. For this project University ofTwente and Evalan were the partners that were mostly contacted. One of the use caseswithin SmarcoS project revolves around type 2 Diabetes patients and how to empower thistarget group to make healthy lifestyle choices across devices and situations.The SmarcoS project is described as follows: “SmarcoS project aims to help users of inter-connected embedded systems by ensuring their interusability.”Nowadays, many products connect with web services (media players, refrigerators).This distributed computing is becoming the norm in embedded systems. SmarcoSallows devices and services to communicate in UI level terms and symbols, exchangecontext information, user actions, and semantic data. It allows applications to followthe user’s actions, predict needs and react appropriately to unexpected actions.The use cases would be constructed around three complementary domains: attentivepersonal systems, interusable devices and complex systems control. Several pilotswould be carried out to implement the use cases. SmarcoS is planning to run a largeEMPOWERING DIABETES PATIENTS, SUPPORT IN MAKING HELATHY FOOD CHOICES | page 8
  9. 9. trial based around the time of a major public event and is currently considering Lon-don around the time of the 2012 Olympics. Along the project, several smaller prototypeswill be implemented.Our results will be applicable to all embedded systems that interact with their users,which is a substantial fraction of today’s market.” (Huuskonen)A joint effort between different companies and universities is made in this project to look atpeople between the age of 45 and 60 with Type 2 Diabetes who are diagnosed within the lasttwo years. This is a group that is new to the disease, allowing for a shaping of rituals to helpthem to copy with their disease more efficiently.1.1.3. Personal motivationFor this project I am interested in a two-sided personal perspective. I think people shouldnot step out of their routine when using a product to help them in a context. Therefore I aminterested in how a product can work by using minimal effort.Food is a part of everybody’s daily life: most people get up in the morning, have breakfastand go to work. Yet, in the case of Type 2 Diabetes patients, this isn’t as simple as it seems.For them, as I will demonstrate in this proposal, food intake like breakfast has an effect onthe activities they can participate in during the day. I want to make an effort in helping thesepeople to gain influence through information in this cause-and-effect situation and helpingthem in their daily routines.1.2. What is type 2 Diabetes“Diabetes is a metabolic disease characterized by higher than normal blood sugar levels.Two main types of diabetes can be distinguished: Type I and Type II. In type I diabe-tes, the body fails to produce sufficient levels of insulin. In type II diabetes, the bodyshows an insulin resistance, which means the cells fail to respond properly to insulin,sometimes with reduced levels of insulin production. Type II diabetes is far more com-mon than Type I diabetes, affecting 90 to 95% of the diabetes population. This use casefocuses on diabetes types II patients.The development of type II diabetes is related to lifestyle, in particular physical activ-ity, diet, smoking, and alcohol consumption. Obesity is widely believed to be an impor-tant contributor to the development of type II diabetes. Specifically, increasing levels ofphysical activity and decreasing the intake of saturated fats and trans fatty acids andreplacing these with unsaturated fats reduces the risk of diabetes type II.” (Lacroix, Schwi-etert, Halteren, Geleijnse, Saini, & Pijl, 2010)Diabetes is a disease that is based on problems with regulating insulin levels. This regulationdepends for a large part on activity and food intake. To get to know what a certain type offood is doing for your body is hard to grasp. People have to take blood measurement to seehow they are doing and whether they can participate in certain activities. It is known that bygiving these people insight information and helping them to manage themselves, they canpostpone and minimize their medication intake (DeWalt D. A., et al., 2009).EMPOWERING DIABETES PATIENTS, SUPPORT IN MAKING HELATHY FOOD CHOICES | page 9
  11. 11. 2. ResearchThe initial research phase was to gain insight into the problems that type 2 Diabetes pa-tients face on a daily basis. The goal was to approach this from several angles to get a goodidea of what is going on in their lives.In this first research step the focus was both on food intake as well as on the activity behav-ior of the patients. These two are the most relevant factors when it comes to the health oftype 2 diabetes patients. First literature was studied to understand the physiological impli-cations. Secondly interviews with caregivers were taken to understand the physiological andpsychological implications. Caregivers know what is healthy and unhealthy for a patient, andare experienced with delivering this data. Moreover, they have experience with the patientsand understand what works in a treatment and what does not.As a final and third step Diabetes patients were interviewed to map the problems that theyface in everyday life. Interviews were conducted to understand their barriers of motivationsto make healthy choices. Patients were interviewed to understand problems they comeacross related to their context, family, daily routines, and what. The goal was to see whetherpatients have similar problems compared to their peers, and how motivated they are tochange their lifestyle.2.1. General type 2 Diabetes treatment2.1.1. Interview with Diabetes nurseAn interview with a diabetes nurse, (presented in appendix 1) in Eindhoven, was initiated togain more insight into the encountered problems in treating the patients. This interviewgave good insights in the current treatment of the patients.According to the diabetes nurse, type 2 Diabetes patients have a lifestyle problem. With aproper lifestyle (being more active and eat less) they can do without medication and com-plications for a long time. Yet as this behavior has been shaped over many decades it is hardto change this, even for the better. The first problem is that people cannot estimate what iswrong with their current behavior since they cannot see the implication of it in five yearstime.Currently the role of the diabetes nurse is to check blood glucose levels every three monthsand give advice on medication intake. When the problem area is identified the patient canbe sent to a physiotherapist to become more active, or a dietary expert to focus more on thefood intake.She argues that the most important thing is to make people more active and eat less. Thisallows the caloric intake and output to become balanced.2.2. Effects of food intake on type 2 Diabetes2.2.1. Literature on food intakeThe eating behavior of a Type 2 Diabetes patient is of major importance for their health.Trans fatty acids for example increase a person’s risk of diabetes with 40% (Salmeron, et al.,2001). When a person is diagnosed with Type 2 Diabetes, eating healthy is very important. Bycaloric restriction you lose weight and by losing weight the body cells are more susceptibleto insulin (Harris, Petrella, & Leadbetter, 2003). People with a healthy weight are better at regu-lating the glucose levels in their blood (Daly, Vale, Walker, Littlefield, Alberti, & Mathers, 1998). AEMPOWERING DIABETES PATIENTS, SUPPORT IN MAKING HELATHY FOOD CHOICES | page 11
  12. 12. decrease in weight allows for a decrease in medication and a general improvement in health(Williamson, Rejeski, Lang, Dorsten, Fabricatore, & Toldeo, 2009).An aspect of eating is the Glychemic Index (GI). This index tells us how quickly the sugars offood are absorbed by our body in glucose (Dunkley). High readings (above 50) mean a quickincrease in glucose, yet there is a big drop behind this increase. This can be compared tofoods that contain much sugar. They give a quick energy boost, yet afterwards you get tiredfairly quickly. A lower GI means a slow increase in glucose and no drop afterwards. Thismeans the energy from the food will be distributed more evenly over time. An even energyspread is less of a shock to the body.2.2.2 Interview with dieticianA talk with a dietician (presented in appendix 2) gave me insight in the current treatment andproblems. First of all, in the current way of working, the dietician talks to the patient onlyonce. This makes it hard to change the behavior since there is a lot of pressure on this onemeeting. A lot of information has to be taken in at once, and no help is provided afterwardsto initiate this drastic change in people’s life.For type 2 diabetes patients it is considered important to keep your blood glucose levels ashealthy and constant as possible. This means that the first advice for patients is to spreadout the meals over the day. They are advised to eat a little less for breakfast, and take part oftheir breakfast as a snack a couple of hours later.Although sugar and carbohydrate intake is important, it is not extremely important for ourtarget group. For patients who only have diabetes for a maximum of two years, this is not yetrelevant. During the advisory meeting with new Diabetic patients the dietary expert focuseson caloric intake. As the number one priority is to decrease the amount of calories in theirfood. In this stage of type 2 Diabetes every weight loss has a very positive impact on the fu-ture health of the patient. This is hard to understand for the patient while immediate effectson their health stay out.The current approach of the dietician is to find the problem areas, and for the patient to shifttowards healthier food. The dietician tries to estimate the change a client can make. Thisestimated change is highly important, as people will not continue their diet if the shift is toodrastic.2.2.3. Dietary monitoringTo gain insight in what people eat, possibilities of dietary monitoring were explored for thisproject. Currently existing solutions (e.g., self-reports, diaries) are either inaccurate or laborintensive or obtrusive. These problems make them impossible to use in a natural setting.For example there are laboratory studies based on in ear monitoring of chewing sounds(Amft, Stager, Lukowicz, & Troster, 2005). An analysis (Teunisse) was performed on this problem(Figure 1, page 12).At this point in timethere is no reliablefood monitoringmethod available.Even though thisis hard dieticiansexperience a biggerproblem in the adher-ence of a diet then inunderstanding what Figure 1: Dietary monitoring analysis (Teunisse)EMPOWERING DIABETES PATIENTS, SUPPORT IN MAKING HELATHY FOOD CHOICES | page 12
  13. 13. the patients eat. In that sense not being able to measure what people eat is not the first issueto address. Educating patients in what is healthy and what is not is needed so they can takesmall steps in improving their lifestyle themselves.In line with the approach followed by the dietician, the focus of the project will be on provid-ing information more effective at the decisive moment.2.3. Effects of activity on type 2 Diabetes2.3.1. Literature on activityOften activity is described by patients as sports, yet patients underestimate the effects ofwalking. By walking about three hours a day, or 19000 steps, patient health increases consid-erably.A change in behavior like this leads to an increase in insulin sensitivity (less medication)(Tudor-Locke, et al., 2004) and a loss of weight. A decrease in the risk of high cholesterol(Tudor-Locke, et al., 2004) and heart failure, and a general improvement of health.When people stick to a regime of 19000 steps a day medication can be postponed for as muchas twenty years (Tudor-Locke, et al., 2004). 66% of the patients do not engage in physical activ-ity (Tudor-Locke, et al., 2004). This can be due to a perception problem or a part of a sedentarylifestyle. Most type 2 diabetes patients have a sedentary lifestyle. A 100-steps/day increase isconsidered a good result (Greef, Deforce, Tudor-Locke, & Bourdeaudhuij, 2010).2.3.2. Interview with physiotherapistA physiotherapist (presented in appendix 3) gave me insight in the procedures used for helpingdiabetes patients in becoming more active. In helping people to get more active the therapistpointed out two important factors. First he explains that the self-efficacy of the patientsneeds to be at a sufficient level. They have to believe that they are capable of becoming moreactive. An often-used approach is to have them participate in an activity.The second important factor the physiotherapist focuses on is helping people understandthat even moderate daily life activity such as walking is beneficial for the patients’ health.Physiotherapists find it hard to talk about walking with patients. Although it is seen as auseful form of activity, the perception of walking varies a lot. “When a patients tells you theyhave walked for one hour, do they mean this as being active, and going for a walk, or is itstrolling around the city at a low intensity”. Yet a walk to the supermarket and walking dur-ing lunch can increase you caloric output, and increase your health.Although most patients are obese, this usually does not interfere with the treatment (Harris,Petrella, & Leadbetter, 2003). Patients should not become athletes; they just need to get outof their chair.2.4. Behavior change strategies2.4.1. Literature on interventionWhen talking about changing a lifestyle, an intervention is necessary. This chapter discussesknown methods by researchers found in literature. This gives an overview of possibilitiesthat can be used.In the current healthcare system type 2 Diabetes patients are confronted with busy physi-cians and scarce resources. Often the patients themselves are not very motivated (Harris,EMPOWERING DIABETES PATIENTS, SUPPORT IN MAKING HELATHY FOOD CHOICES | page 13
  14. 14. Petrella, & Leadbetter, 2003). To change their lifestyle, patients need to be motivated to do so. Atried technique in this is self-efficacy, thus setting your own goals and experiencing that youcan live up to the goals (DeWalt D. A., et al., 2009).To allow patients to manage themselves they need to be aware of their current behavior.They need to be guided to adapt these behaviors (DeWalt D. A., et al., 2009). By allowing pa-tients insight in their behavior and letting them set their own goals, the patients are motivat-ed from a more intrinsic perspective than when a professional tells them what to do (Greef,Deforce, Tudor-Locke, & Bourdeaudhuij, 2010).Barriers to overcome with self-efficacy are described by social norm, support and help fromthe family (Greef, Deforce, Tudor-Locke, & Bourdeaudhuij, 2010). By changing the perspective ofthese patients they are more susceptible to change.It is important to show the patients their own behavior, and make them question it. Whenthey understand they can change this, change is often the next logical step. Especially whenpatients feel the want to change, but don’t feel they can.2.4.2. Technology versus human effects on interventionWhen patients talk with other people about their Diabetes they have acknowledged theirdisease (Ornish). Although you cannot force people to talk with their peers, some parts of thehealth care system might engage in social discussion.2.5. User interviewsWe performed interviews with Diabetes patients to understand their rituals and needs.Below, we discuss, the goal, the method used for interviewing, the resulting insights andrequirement and the use of these in the project.The process will begin with context mapping. This has been done with another member ofthe research group, and an employee of Evalan (partner in the SmarcoS project). Evalan isa company specialized in medical products. Marloes van der Hout, a recent graduate fromIO Delft and an expert on context mapping collaborated on the interviews. Together withpsychologist Joyca Lacroix the context sensibility techniques is chosen as support of theinterviews to get an insight in patients’ daily routines.2.5.1. Interview goalsType 2 Diabetes patients have experienced the influence of their disease on their life. Howdo people go about in activities and eating, and how could a concept fit within their regularscenario. But also in a technical sense, how can one describe and rate activity versus foodas to be able to make decisions on what is healthy for a person. This is two-sided. Literatureagrees on what is healthy and what not. Yet to present this information in a concrete way,valuable to their daily life, and understandable within their references is the challenge.These interviews were an important part of combining literature and information by thecaregivers in a human way.The goal for this user test was twofold. First, to get insight in the daily routines of peopleand to understand the moment at which they are most susceptible to change. Second, tounderstand how important food, activity, medicine intake and stress are for them. And to geta general perspective on their relation with type 2 Diabetes.2.5.2. MethodEMPOWERING DIABETES PATIENTS, SUPPORT IN MAKING HELATHY FOOD CHOICES | page 14
  15. 15. Four participants received an envelope with 7 assignments (presented in appendix 4) one weekbefore the interview. These assignments were partly about rituals, and partly about photo-graphing important aspects. This means that every evening they had to reflect on the daybased on themes. These themes are: food, activity, stress and medicine intake. This was tohave the patients think about these subjects before the interview. This means the patientsare more aware of their rituals and have more to say, so that the subjects being discussed arenot a surprise anymore.On the other hand the participants received a pedometer, and were asked to note down theamounts of steps they took that day. This means that by the end of the week there is a recordof how many steps are taken on average on those days.After a week of reflection, an interview took 90 to 120 minutes. During this time the assign-ments and photographs taken each day were discussed.2.5.3. Results from interviews in requirementsThe interviews are transcribed into quotes (presented in appendix 5) and categorized withthe MoSCoW system. The goal was to find quotes related to each other and find commonproblems. Categorizing the quotes gave an overview of the conducted interviews. The quotesthan can be turned into user requirements. This means looking for patterns and rating thosepatterns in Must, Should, Could and Won’t (Clegg & Barker, 2004).The results of the four interviews with type 2 diabetes patients can be seen in the table be-low. This data is based on quotes from all the interviewed patients, which were categorizedin food, activity, stress and medication. Requirement Description MoSCoW Comments, other data... The system needs to take in Must The dietary expert doesn’t account my regular behav- try to make me feel guilty ior, and give alternatives The system should be subtle, Must The diet was too extreme, I and try to change in small couldn’t last this way steps The system needs to help in Should I could eat less, but I only portioning plate once, so why? The system informs the user Should I eat less meat and fish, and what food is good more potatoes as I consider this healthy The system should be quick Must I don’t care about food in- to use take programs, they are too time intensive The system makes projec- Should Since I notice I get full tions on what current behav- faster, I am much more ior could lead to motivated The system recognizes Could I always eat … for breakfast behavioral patterns and lunch The system needs to allow Should I chose to go out to din- for extremities ner and eat unhealthy, this makes me happy and doesn’t happen very oftenEMPOWERING DIABETES PATIENTS, SUPPORT IN MAKING HELATHY FOOD CHOICES | page 15
  16. 16. The system creates aware- Must Why should I change my ness of the effects of food diet, I am not sick choices The system understands Should Work and weather influence exceptions/deviations from my activity activities The system creates feedback Must I actually got scared when on the basis of insight in I saw the amount of steps I activity took every day The system motivates Must Going to the supermarket by showing the relation gained me 1500 steps, I between daily activities and never saw that as healthy health The system raises confi- Could I sold my bike as I am afraid dence and activity by warn- to get another hypo while ing for a hypo riding it The system gives insight Could I have never been active and in daily moderate activity never will be, I don’t like like walking and going to sports the supermarket as healthy behavior. The system is reliable, and Should I try to find information on perceived as a trustworthy the internet, but I am not source of information always sure how reliable it is The system gives positive Must I prefer the dietary expert feedback over internet as she is more concrete and positive The system predicts positive Could I actually like how diabetes aspects decreased my belly girth The system learns about Should The distinction between a hypo’s and hyper’s hypo and a hyper are very hard to understand The system communicates Could I like numbers as it gives me numbers insight in patterns. I might be able to attach those to my lifestyle The system projects current Should Luckily I don’t have to inject behavior, and how this can insulin yet postpone the moment when you have to start injecting insulin The system should commu- Should I have a book with nutrition- nicate abstract information al information, but I find it very hard to understand2.5.4. Use of requirements for food focus in projectThe MoSCoW analysis shows what is considered important for this project. Currently theserequirements are not context dependent, but based on a wide array of context, problems anddirections as communicated by the interviewed patients. Although the context is explainedlater on in this report, the focus will be put on food intake. Activity is part of the problem,yet people are not aware of it being a problem. To make most of their intrinsic motiva-tion food is a more motivating direction as diabetes patients have questions and strugglesEMPOWERING DIABETES PATIENTS, SUPPORT IN MAKING HELATHY FOOD CHOICES | page 16
  17. 17. with food. With food intake people know that they can make a difference. They do want tomake changes and go look for information on healthy eating. The interviews show applyinginformation is a problem for the patients. The moment they need information, for example inthe supermarket, it is not available. Also when their partner goes shopping for food they aregiven a large burden by having to pick the right food.EMPOWERING DIABETES PATIENTS, SUPPORT IN MAKING HELATHY FOOD CHOICES | page 17
  19. 19. 3. DesignTo find a challenge in the treatment, the research results were translated into requirements.To make use of information from users and experts, a vision has been created that takes thischallenge in account. First of all this vision will be tied to the user within a certain context.Then the vision is summarized in more specific requirements that allow for an implementa-tion. This implementation is what is communicated to the shareholders. The implementationis explained by exploring a concept and defining it through interaction, form and technology.3.1. VisionBelow is a subset of requirements that are chosen which fit the stakeholders, and how theyrelate to food. For the stakeholders it is important to understand what patients prefer whentreating them. This explains the abstraction of the requirements, so that they can be used inthe SmarcoS project.Although activity is a very important factor, it is not taken into account due to the complex-ity of the problem and the current timeframe. But it is strongly recommended to incorporateactivity to create a complete solution in helping patients to manage their lifestyle.R1: The system needs to take the patients regular behavior into account and give alterna-tivesR2: The system should not be extreme by trying to change everythingR3: The system needs to help in portion sizeR4: The system informs the user which food is good for themR5: The system should be quick to useR6: The system motivates by showing the relation between daily activities and healthR7: The system defines activity as not sports relatedR8: The system gives positive feedbackR9: The system should communicate abstract nutritional values, not concrete informationThese requirements will be summarized in the vision. The implementation has its own varia-tion of requirements specific to the context. The vision can be formulated as: “By supportingtype 2 diabetes patients to gain insight into their food choices and possible healthier alterna-tives, they can become more aware of their food intake which enables them to change andthereby live with fewer complications.”3.1.1. Context for visionInterviews have shown that people are being confronted with an incredible amount of infor-mation. When talking about food specifically patients mentioned that they are confused be-cause of the enormous amount of choice they have when they enter the supermarket. By us-ing a known and trustworthy source, for instance the “Voedingscentrum”, a patient is givena way of accessing this information within the context where they need this information. Adietician tries to educate patients about food intake. However in the interviews patients feltthis education about food was important, yet hard to apply in the supermarket. The patientssaid that in the supermarket the information is very concrete and complex, while they areEMPOWERING DIABETES PATIENTS, SUPPORT IN MAKING HELATHY FOOD CHOICES | page 19
  20. 20. taught by a dietician about abstract values like calories from behind a desk. On the otherhand they feel like they are putting pressure on their partner for having to understand andapply all this information.An additional problem for diabetics is their level of activity and movement. Activity is mainlytreated by caregivers. For example in Eindhoven, type 2 Diabetes patients have one meetingwith a dietician versus six to twelve with a physiotherapist in two years time. Also patientsdo not consider their activity to be a problem. The motivation to change this is extrinsic;the health care professional tells them to change it. For food this motivation is more intrin-sic because of its clear influence on the disease. The effect of food is something with moreshort-term effects: when they eat unhealthy, they notice direct effects such as feeling faint.During interviews patients talked about looking up information on the Internet about whatis healthy and what is not. Some patients buy a book with caloric tables, but explain they stillfind this hard to work with. To conclude: Healthy eating is an area really loaded with rel-evant information, but people do not know how to apply this in practice at the supermarket.Interview patient: “What we eat is always homemade, with ingredients from the super-market.”People make a decision in the supermarket about what food to buy. This moment of decisionis why the supermarket is an important context. People not only doubt what sort of food tobuy, but also make the choice between similar alternatives that are available. Other contextpossibilities are the kitchen where food is prepared, or maybe in the dining room where foodis consumed. The supermarket is interesting for its part in decision-making and the possibil-ity to pick out alternatives. This makes the supermarket unique and an appropriate placeto change you lifestyle regarding food choices. In the supermarket there is an abundance offood, but it is very difficult to compare the different products or make a judgment about howhealthy a certain food product is.Interview patient: “I really like eating healthy food, and picking right and wrong thingsat the supermarket is very difficult.”3.1.2. Motivation for visionIn the interviews patients have mentioned that shopping is a big problem. They have difficul-ties in knowing what the healthier choice is for them. They also feel that their food restric-tion puts a burden on the whole family, especially when their partner goes shopping for food.Patients are motivated to eat healthier; they look for information online and go to see adietician. But they miss this information in the proper context. To generate context awareinformation on a decisive moment, insight is needed in the normal behavior patterns (Fogg,2002). This context aware information changes people’s degree of knowledge, which accord-ingly lowers the threshold to change the behavior (Fogg, 2002).3.1.3. Concept RequirementsR2: The system allows for specific timely changes, one at a time, in a person’s total diet.R4: The system informs the user what food is healthy for their diabetic condition based onexpert knowledge from the Voedingscentrum.R5: The interaction with the system is fast by just holding or pointing at the product.R8: The system does not judge people when they pick something unhealthy because thisresults in a lack of adherence to future advice.EMPOWERING DIABETES PATIENTS, SUPPORT IN MAKING HELATHY FOOD CHOICES | page 20
  21. 21. R9: The system gives information about a product on a one-dimensional healthiness scale.Also new requirements are set up to give pointers for the interaction for this specific con-text.R10: The system fits into regular supermarket shopping without taking more time then youwould without the system.R11: The system gives access to dietary information in the supermarket.3.2. Implementation3.2.1. Shopping bagContext-specific decisions and the user need for information and support at the moment ofdecision-making is very important. Therefore the developed concept entails a solution thatmatches the supermarket context and allows for easy communication about the healthinessof products.Interview patient: “I tried to find on the Internet what is healthy and what is not, but thiswas hard. The dietary expert was more useful. She provided more practical and stimu-lating information.”Interview patient: “I am not sure whether meat is healthy.”Interview patient: “When shopping for groceries, I consider the following things: is ithealthy, what is in it, is it varied?”Concept: a personal dietician going with you to the supermarket that you can ask questionsabout a specific product. With the opportunity to show several products where the dieticiancan pick the healthiest.After having established a vision, it was important to find an implementation suitable forthe user requirements, and as well capable of communicating the idea. A brainstorm basedaround the question of abstract feedback about healthiness of products in the supermarketwas organized (Figure 2, page 21). After a range of ideas was generated:The challenge is tofind a solution thatsticks in the stake-holder’s imaginationwhile at the sametime being technolog-ically feasible, as thisproject aims to finishin two years time.The concept is ashopping bag thatthe patient brings to Figure 2: Results from brainstormthe supermarket andhangs in their shop-ping cart. Instead of asking a dietician how healthy a product is, the patient holds it in frontof the shopping bag that then gives a personal answer with light.EMPOWERING DIABETES PATIENTS, SUPPORT IN MAKING HELATHY FOOD CHOICES | page 21
  22. 22. The choice for a shopping bag is based on the fact that people are the most susceptible tochange and open for alternatives when they are making a decision or are in doubt. Theinterviews made clear that patients have a hard time making a distinction between healthyand unhealthy food. It becomes even more complicated when the patient’s partner is doingthe groceries because the problem of decision-making then shifts towards the partner. Tosupport them in this process, the patient has a shopping bag that is taken to the supermar-ket. It is important not to try to get people from snacking on a mars bar towards celery. Bytaking small steps at a time, and improving the eating pattern step by step, the patient ismore likely to change.Figure 3: Context impression (Image by Figure 4: Model with light pattern indicat-Loblaws) ing two products.The shopping bag (Figure 3, page 22) contains a camera that scans product barcodes andregisters one or more products. The bag then connects to the “Voedingscentrum” databaseto look up how healthy this product is. This information is communicated to the patientsvia a light pattern (Figure 4, page 22) on the outside of the bag. This pattern corresponds tothe level of healthfulness of that specific product. Users can personalize the light pattern totheir own liking, thus preventing other people in the shop to stigmatize them as someonewho are obsessed with healthy eating. When you hold two products in front of the camera anarea around the camera lights up to show which product is healthiest considering their per-sonal diabetes circumstance. The bag allows the user to keep their hands free at all timesand be able to move through the supermarket without having to grab additional tools like aSmartphone, which might interrupt their shopping rituals (Figure 5, page 22).Using light forfeedback is chosenfor its subtle nature.Another way togenerate feedback isfor example soundor touch. Howeverthese are not suit-able for this conceptbecause sound is tooobtrusive and touchneeds a differentapproach. It wouldmean that the pa-tient needs to wearsomething at alltimes or hold some-thing when they Figure 5: Technical prototype on a shopping cartEMPOWERING DIABETES PATIENTS, SUPPORT IN MAKING HELATHY FOOD CHOICES | page 22
  23. 23. want to compare two products. Light allows for a hands-free exploration of the supermarketwithout attracting too much attention. When other people see the light pattern generated,there is still a degree of discretion. The colours used are personal and hard to understandfor outsiders. For other people in the supermarket it becomes an aesthetic element of the bagwithout a direct health related meaning.The personalized light scheme is used to create a way of feedback that is meaningful andpersonalized for the specific user. This means that even if other people in the shop see thelight pattern, only the owner of the bag can understand the feedback and make healthy deci-sions.3.2.2. Interaction with shopping bagThe diabetes patients that were interviewed all go to the supermarket once or twice a week.Patients use a shopping cart to be able to take this amount of groceries. Observations donein the supermarket conclude that people often use a shopping bag that is hanging on theircart, either on the front or at the back.The observation of people using their own bag which hung on the front of their cart wasused as inspiration for the interaction. People have a ritual where they carry an object withthem to the context, and they hang it in a predictable location. To define possibilities for thislocation a subset of interactions has been explored through a brainstorm. I explored ideasranging from a bag that closes when you put something unhealthy in it, to a big screen onyour bag comparing two specific products (Figure 6, page 23).Inspiration used forthe feedback of the bagwas the act of weigh-ing items. When peoplemake a distinctionbetween two productsoften both items are heldin each hand. By thenmoving them both upand down, an estimationabout weight is made.The concept is builtaround the idea of takingboth these products,holding them in the airand getting feedback onwhich is better. But in-stead of a haptic result,a visual result is created Figure 6: Interaction idea sketchesallowing abstract insightin health values of aproduct. This interaction allows for seamless integration within their shopping rituals (Fig-ure 7, page 24). Patients are not judged based a decision resulting from the information givenby the bag, or they are being prohibited to perform a certain action. For example, a bag thatcloses when you try to put something unhealthy in it.For this interaction it is important to have free hands when interacting with the bag. Thismeans that the user can actually take products from the shelves and compare them on thefly. This is better than having to take a mobile phone that interferes with shopping rituals,and leave only one hand free to take a product to compare.EMPOWERING DIABETES PATIENTS, SUPPORT IN MAKING HELATHY FOOD CHOICES | page 23
  24. 24. According to the dietician a small improvement is often quite a big step for patients. Thisinteraction allows the patients to pick two products they find acceptable and helping them toshow which is best for their health. It is then up to the patient to decide on what to buy. Thisdecision is not judged afterwards. While it was found in the requirements that people whofeel judged, tend to turn down future advice. SUPERMA Whole wheat WHITE WHITE ? WHITE > WHITE wheat wheat WHITE WHITE wheat WHITE WHITEFigure 7: Scenario of interaction3.2.3. Form of shopping bagAfter the interaction was established the form was explored through drawing on a shoppingcart to take in account the context in which it will be used. By making photographs of thecart perspective and ratio were used (Figure 8, page 24).Figure 8: Exploration of form on cartEMPOWERING DIABETES PATIENTS, SUPPORT IN MAKING HELATHY FOOD CHOICES | page 24
  25. 25. Ordinary shopping bags are used as an inspiration. Cheap plastic bags and paper bags hand-ed to us in shops are iconic (Figure 9, page 25). They have certain aesthetic that is connectedto shopping, but can be used in a more sustainable way.Figure 9: Paintings for inspiration (Images by Wagner Art Gallery)By starting with the proportions andfolding lines of these bags and fittingthem to the proportions of the shoppingcart, a combination was made that allowsfor a known form. Normally this form ispresented in paper or plastic which has acheap feel. But by applying more expen-sive durable materials, such as leather,an aesthetic is created that feels knownand fits to shopping, yet doesn’t have theinexpensive feel to it.Through an exploration with newspapersto determine the proportions of the bag,a model in cotton is made to understand Figure 10: Eames Lounge Chair (Image by Vitra)how it relates to a shopping cart. Themodel is taken to the supermarket, put on a shopping cart, and from there on a final model iscreated. The final model design is inspired by a chair designed by Eames, and later changedby H. Jongerius (Figure 10, page 25).Although the chair itself is very highend, the materials, leather and walnutwood were used as inspiration for thebag. The materials are durable, yet thecolor of the wood is linked the paper bag,and white leather reminds me of the col-or of plastic with a more natural texture.The color of the leather is also importantbecause the feedback lights will shine onthe material, and so the material needsto be light to be able to see the effect. Figure 11: Sewing patternsEMPOWERING DIABETES PATIENTS, SUPPORT IN MAKING HELATHY FOOD CHOICES | page 25
  26. 26. A final visual model of the bag is created and presented at the presentation. This is createdfrom drawings, silhouettes in perspective and the right size. The silhouettes are transformedinto sewing templates (Figure 11, page 25). The first model was made out of canvas (Figure 5,page 22), but the final model is made from cow leather.3.2.4. Technology in shopping bagThe electronics are created in sucha way that they are able to commu-nicate the concept (Figure 12, page26). It is not created to be foolproofor efficient in size or power con-sumption. Based on this idea someshortcuts were made to prototype theinteraction. The working interactionis important as a communication tostakeholders.To use Processing to recognize a realbarcode is very time intensive to cre-ate. Therefore reacTIVision was used.This is an open source frameworkused for multi touch tables. The reac-TIVision project designed special bar-codes, called fiducials, which can berecognized at incredible high speedand with great accuracy. The reac-TIVision server sends coordinatesfor the fiducials to Processing. Usingthe fiducials instead of barcodes wasa way of making a prototype fasterto be able to communicate the vision Figure 12: Diagram of technologyand interaction more clearly.In Processing the date from coordinates is re-mapped into a circle of light. The feedback isgiven on the side of the bag where the products are held. By moving the product in front ofthe shopping bag the projected light on the bag itself is updated and moves with the productcreating a mental connection between the product that the user holds and the side on whichthe product is placed in relation to the light source. The values of these light patterns aresent via serial communication to an Arduino. The Arduino is used to interpret the data fromProcessing and sends this to LED drivers. The LED drivers are updated every time a newsignal is sent from Processing.For the current implementation it is necessary to have a laptop hidden from sight becausethe shopping bag can’t function with only a microcontroller hidden in the bag. Currently alaptop is needed for the calculations. The webcam is connected via USB to the laptop, calcu-lates the lighting pattern, and tells the Arduino exactly which LED should light up at whichbrightness.EMPOWERING DIABETES PATIENTS, SUPPORT IN MAKING HELATHY FOOD CHOICES | page 26
  29. 29. 4. DiscussionThe implementation is a means of communicating a vision. The vision has a certain rel-evance and application which is explained in this chapter. When you look at this vision in abroader perspective, it can be used for other target groups as well, depending on the userand information displayed. Moreover, we believe the solution can be extended in severalmeaningful ways. These aspects will be discussed below.4.1. Relevance of visionCurrently dietary advice and making food choices are separated in context. A dietician tellsyou about what is healthy and unhealthy in an office context. This information is over-whelming and hard to grasp due to its complexity. Patients have said in interviews that theysearch for different sources about healthy foods on the Internet. But in the supermarket thechoice is overwhelming and they are not sure how to apply this knowledge in a concrete way.The shopping bag concept is a first step in addressing this problem by giving the necessaryinformation without forcing people upon a different diet.4.2. Application possibilities4.2.1. Different user or contextDepending on the personal need and available information, the vision could be applied ina number of situations and for different goals. For example, this shopping bag can also beused for managing healthy diets for other patient groups. Patients with a kidney disease candecrease their consumption of salt, or people with chronic heart problems can reduce theamount of fatty acids. Also people interested in eating healthy, either to lose weight or feelbetter, can be helped to make choosing healthy food an easier process.The current invention could also be used with another database to compare the sustain-ability of food, for example to show the difference in their carbon footprint. The basis of thisvision gives insight in the needs for a specific target group, and a database containing theinformation to answer this need in an abstract way.The shopping bag is part of a large array of solutions for helping Type 2 Diabetes patientswith a healthier lifestyle. It resembles the vision because it gives people information abouthow healthy products are within context. The shopping bag is a way of communicating this.Yet this vision also allows for different implementations. One could think of a mobile applica-tion or becoming integral to a shop by designing a variation on the shopping cart.4.3. Future research recommendations4.3.1. User studiesFor now this implementation is a means of communicating a concept to stakeholders, but it isalso possible to communicate this idea to the user and ask for feedback.It would be a good idea to create a user test that gives users the ability to give feedback onthe vision as well as the implementation. This would make the vision also stronger in thecommunication to the stakeholders. By knowing what the type 2 Diabetes patients appreci-ate about the vision and implementation, further steps can be made to evolve the vision and /or implementation. This can result in a feasible product that makes a change in people’s livesand helps them to maintain a healthy lifestyle.EMPOWERING DIABETES PATIENTS, SUPPORT IN MAKING HELATHY FOOD CHOICES | page 29
  30. 30. 4.3.2. Technological advancementsDepending on the communication the technical prototype is not yet up to a lot of travel andinteraction. It is a working prototype, but needs a separate computer and is programmed tounderstand only a very small array of products. When the current implementation is found tobe successful by users, a step can be made to recognize barcodes and tie this to the databaseof the “Voedingscentrum”. This way the product can be tested in the supermarket underreal life conditions.4.3.3. Importance of activity vs. dietIn the future an extension of the system will focus on combining support for healthy foodchoices with support to increase physical activity. The caregivers told us that it is importantto understand that food and activity relate to each other. The simplest way of communicat-ing this relation is by comparing calories. The ultimate goal for a patient is to balance theircaloric input (food), and output (activity) so that it is balanced and the patient doesn’t gainweight, or even loses weight until a healthy weight is achieved.This implementation is a first step into the right direction, but by applying this with otherresearch projects a new more complex system can be designed that combines all food andactivity. This gives a real insight for the patient and allows for more information to care-givers, which is usable in a treatment. In the end hopefully people get to understand thisrelation, so they can eat a bit more, but become more active, or the other way around. Thisway caloric balance can be reached, yet the patient can choose the direction and receives apersonal treatment.EMPOWERING DIABETES PATIENTS, SUPPORT IN MAKING HELATHY FOOD CHOICES | page 30
  33. 33. 5. ConclusionThe goal of this project was to develop a vision on solutions that help diabetes patients withhealthy lifestyle choices, and to communicate this vision to partners in the SmarcoS project.The vision is about giving people abstract information about food products in such a way thatthey can apply this in the context where they make the decision. An experiential imple-mentation, shopping bag, was created that communicate this vision. The shopping bag waschosen for its innovative and communicative characteristics, with the aim to communicateand inspire people.The stakeholders will use the results of this project in the context of the SmarcoS proj-ect. The results of the SmarcoS project should contain an abstraction of information, andadherence to rituals within that context inspired by this design. This implementation wasdesigned to show a possibility when taking in account context, users and expert knowledgeabout disease and its treatment. This resulted in a vision and implementation that could bepart of the solution that helps type 2 diabetes patients in living a life with less medical com-plications and less medication.EMPOWERING DIABETES PATIENTS, SUPPORT IN MAKING HELATHY FOOD CHOICES | page 33
  35. 35. 6. BibliographyAmft, O., Stager, M., Lukowicz, P., & Troster, G. (2005). Analysis of Chewing Sounds forDietary Monitoring. UbiComp 2005, (pp. 56-72). Tokyo.Bickmore, T. W., Caruso, L., Clough-Gorr, K., & Heeren, T. (2005). “It’s just like you talk to afriend” Relational Agents for Older Adults. Interacting with Computers .Clegg, D., & Barker, R. (2004). Case Method Fast-Track: A RAD Approach. Addison Wesley.D P Farrington, B. C. (2004 8-April). Measuring the effects of improved street lighting oncrime. Britsh Journal of Criminology Advances Access .Daly, M. E., Vale, C., Walker, M., Littlefield, A., Alberti, K. G., & Mathers, J. C. (1998). Acureeffects on insulin sensitivity and diurnal metabolic profiles of a high-fructose compared witha high-starch diet. The American Journal of Clinical Nutrition , 1186-1196.DeWalt, D. A., Davis, T. C., Wallace, A. S., Seligman, H. K., Bryant-Shilliday, B., Arnold, C.L., et al. (2009). Goal setting in diabetes self-management: Taking the baby steps to succes.Patient Education and Counseling , 218-223.DeWalt, D., Davis, T., Wallace, A., Seligman, H., Bryant-Shilliday, B., Freburger, J., et al.(2009). Goal setting in diabetes self-management: Taking the baby steps to success. PatientEducation and Counseling (77), 218-223.Dunkley, L. (n.d.). How does food affect your blood sugar level? - by Laura Dunkley. Re-trieved 201014-September from Helium:, B. J. (2002). In Persuasive Technology. Morgan Kaufmann.Greef, d. K., Deforce, B., Tudor-Locke, C., & Bourdeaudhuij, d. I. (2010 25-March). A cog-nitive-behavioural pedometer-based group intervention on physical activity and sedentarybehaviour in individuals with type 2 diabetes. Health Education Research .Harris, S. B., Petrella, R. J., & Leadbetter, W. (2003 December). Lifestyle interventions fortype 2 diabetes. Canadian Family Physician , 49, pp. 1618-1625.Huuskonen, P. (n.d.). SMARCOS: Main Page. (Nokia) Retrieved 2010 25-08 from SMARCOS:, M., Basset, D. R., Barreira, T. V., Tudor-Locke, C., Ainsworth, B., Reis, J. P., et al. (2009September). How Many Days Are Enough? A Study of 365 Days of Pedometer Monitoring.Research Quarterly for Excercise and Sport , 80 (3), pp. 445-453.Lacroix, J., Schwietert, H., Halteren, v. A., Geleijnse, G., Saini, P., & Pijl, M. (2010). Use case2 - Healthy lifestyle promotion for Diabetes type II patients. In Smart Composite Human-Computer Interfaces.Nass, C., Steuer, J., & Tauber, E. T. (1994). Computers are Social Actors. CHI, (pp. 72-78).Boston.Ornish, D. (n.d.). Healing on Mumbai, India.EMPOWERING DIABETES PATIENTS, SUPPORT IN MAKING HELATHY FOOD CHOICES | page 35
  36. 36. Salmeron, J., Hu, F. B., Manson, J. E., Stampfer, M. J., Colditz, G. A., Rimm, E. B., et al.(2001). Dietary fat intake and risk of type 2 diabetes in women. American Journal of ClinicalNutrition , 1019-1026.Teunisse, J. (2010.). What mom wants - Towards a rich set of user needs and requirementsfor a personal nutrition system for young mothers, 34.Tudor-Locke, C., Bell, R. C., Myers, A. M., Harris, S. B., Ecclestone, N. A., Lauzon, N., et al.(2004). Controlled outcome evaluation of the First Step Program: a daily physical activityintervention for individuals with type II diabetes. International Journal of Obesity , 113-119.Williamson, D., Rejeski, J., Lang, W., Dorsten, B., Fabricatore, A. N., & Toldeo, K. (200926-January). Impact of a Weight Management Program on Health-related Quality of Life inOverweight Adults with Type 2 Diabetes. Arch Intern Med , pp. 163-171.Woods, S. C., Seeley, R. J., Porte, J., & Schwartz, M. W. (1998 29-May). Signals That RegulateFood Intake and Energy Homeostatis. Science , 280, pp. 1378-1383.EMPOWERING DIABETES PATIENTS, SUPPORT IN MAKING HELATHY FOOD CHOICES | page 36
  39. 39. 7. Appendices7.1. Appendix 1: Interview Diabetes Nurse• Where does she stand in relation to other healthcare personnel?o The nurse is second line. This means that she gets patients who are sent from the“huisarts”. This not always means that all her patients are diabetes patients, but she alsotreats pre-diabetes patients. These are people with high blood pressure, overweight, highglucose levels in their blood.o She relies on HbA1C values from the lab, and decides upon medication. Althoughshe is not qualified to give the actual medication, she gives over a suggestion that is usuallytaken over by a physician.o She stands in the middle of changing the lifestyle in contact with an activity expertand a dietary expert. She looks at the combination of eating, activity and medicine intake.Weight, height. Keeping accurate measurements of the person.o The “Diagnostisch Centrum” is used to analyze blood, and generate the lab valueson which the treatment is based. When necessary also ECG’s are recorded in the hospital.o Her role is pretty unique. “Huisartsen” usually handle this themselves, and are nottrained, like the nurse, specifically in Diabetes.• How holistic is the approach with a patient. Does she consider everything from BMI,psychological wellbeing to willingness to cooperate?o Motivation is the most essential part of treatment. There is a small group of moti-vated patients who are willing to change, and work on this. This is for her, in the role of acoach, very easy to work with.o There is a very large group of unmotivated people. They often lie about their activ-ity patterns and food intake. This makes treatment hard, and is found through the lab valuesof HbA1C. The problem is with the patient. She tries to be very specific about the risks, yetthe patient has to do all the work.o You are handling patients that are almost addicted. You are treating to change abehavior that has a very solid and psychological foundation in a person. Are you willing tostop smoking, leave certain foods untouched or go out more?o People need insight to change. Why do they need more activity? How can this bedone, and what does it mean for me?o A psychologist is a current undervalued part of helping diabetes patients. Currentlythe relation to a “huisarts” is the most common, but extra help, when necessary, from anactivity and dietary expert.o The treatment is currently psychological, physiological and societal.• Does she consider details of the treatment? People who want to know what to do vs.People who want to know what the reasons are, and make their own plan?EMPOWERING DIABETES PATIENTS, SUPPORT IN MAKING HELATHY FOOD CHOICES | page 39
  40. 40. o People know what is wrong and what to change. This as they portray themselvesbetter then they did. So for example say they had more walks, more physical activity, andate less. Yet in the end the lab values HbA1C tell otherwise. This shows that the patients areeducated on what is wrong and right.• What kind of extra information of influence might help the current treatment?o When communication between the nurse, “huisarts”, dietician and physical activityexpert is good, then all information needed is thero People who suffer from diabetes in a lot of times don’t have any problems and feelgood. This makes it hard to motivate people. A higher glucose level doesn’t need to have anyimmediate effects, yet over time might result in severe physical problems.• If you could be alongside the patient all day, what would you note down, and howwould that influence treatment?o Lifestyle. How often do they engage in activity and how many calories do they use.This versus how many calories do they eat.o How did the patient sleep? Was he calm or slept very bad? Then the question iswhether this is physiological or psychological. Both these need a different treatment. Thesleep is not so much important for rest, but because it show how well the sober glucose levelis maintained.o Does he eat regularly, and does he have a breakfast. How well timed is his medica-tion intake?o Some people are not honest, nor do they have the verbal skills to explain their situ-ation.o How do you currently go about with these unknowns?• How does she see the relation between eating and physical activity?o Ideally you want to balance caloric intake and output. When you have a glucosemeter, activity meter and food meter, you can put them all next to each other. This givesvaluable information to the patient and the healthcare professional.o HbA1C level only tells us about the glucose level of the past couple of weeks. Yetwhen this is too high, the reason is no per se known. It could be with food, or exercise. Alsosince people sometimes make mistakes in their diaries, or present it different. It is hard tosay where the problem is.o She is not interested in BMI. This is not as good as people think. For a good insightin overweight the belly girth is more important.o The nurse has the tool to give a coarse caloric estimate on how much people eat,when this is considered to high in relation to their activity, she sends people to the dietaryexpert.o The first priority is to reduce the intake of saturated fats; the second is regulatingthe sugar intake.EMPOWERING DIABETES PATIENTS, SUPPORT IN MAKING HELATHY FOOD CHOICES | page 40
  41. 41. o All the above can be used by the nurse to motivate people. Whether people as sus-ceptible to the actual concrete values, she doubts this.o In the end, a healthy eating lifestyle is the main goal for the dietary part.o Strong diets are not recommended. This is too hard on the body and results insevere glucose fluctuations.• What is your one golden tip?People need to eat healthy and get more active through motivational tools.EMPOWERING DIABETES PATIENTS, SUPPORT IN MAKING HELATHY FOOD CHOICES | page 41
  42. 42. 7.2. Appendix 2: Interview Diabetes DietaryExpert• Where does she stand in relation to other healthcare personnel?o How do you get your patients? What is typical for them?• People are sent through the Diabetes Nurse.• All patients should get a consult in Eindhoven; this is called “ketenzorg”. Yet, inpractice this is not always true.o On what values do you rely during treatment? And how precise are they?• Blood values from the Diabetes nurse, belly girth.o How long do you keep in touch with these people?• Only once, and this is way too few. You don’t have insight in what works, and howpeople go about with your tips.• When something happens, or people are very obese, a second consult can be ar-ranged.• A meeting takes an hour. People already gave their current diet to the nurse, whogives this to the dietary expert. During the meeting she asks for the specifics, and tellspeople about the relation between food and diabetes.• This is partly advice, part answering questions.o What is the bottleneck during treatment? -> How hard are these people to motivate,and how do you motivate them?• The dietary expert tries to create a new diet advice based on their current diet.This to allow them to make a change that is not too big, and keeps them motivated.• The biggest problem is that she only sees the patient once, this puts a lot of pres-sure on the one meeting, and she can’t see the effects of the new diet, or change it accordingto wishes.• You can’t tell people what to do, they have to change. The difficulty is that goingfrom 1 liter coke a day, to a half is positive, yet not ideal. But ideal usually can’t be reached.• It is really hard to change, because you can see that people are getting more obese,and the number of Diabetes patients in the Netherlands is still increasing.• Does she consider details of the treatment? People who want to know what to do vs.People who want to know what the reasons are, and make their own plan?o People need insight to change. Why do they need to eat different? How can this bedone, and what does it mean for me? How concrete/abstract is the information they receive?EMPOWERING DIABETES PATIENTS, SUPPORT IN MAKING HELATHY FOOD CHOICES | page 42
  43. 43. • She needs to know what their current diet is, and tells people about what is good ornot. Based on this, in a discussion with the client, she allows them to set new goals and allowfor insight in what to change or not.• The largest group of diabetes patients (not using insulin through needles) doesn’thave to count their carbohydrates. By eating healthy (Voedingscentrum standards) theyshould be fine. So the information she gives are not very technical.• What kind of extra information of influence might help the current treatment?o How do you combine your treatment with the other healthcare personnel?• She receives blood measurements and a diet from the Diabetes nurse. Things shelooks at are glucose levels (over time), blood pressure, and cholesterol and belly girth.o What information is easy to find, and what is not?• When is the glucose a problem? Morning low levels for example. Yet this minutespecific information is usually not available as this is over weeks.• Also psychology plays an important role, have people tried to lose weight? Whydidn’t this work? How can we change this?• There is an imbalance with 99% of all patients. 99% is obese, this means that theyare not active enough, they eat too much calories or both. This allows for specific changes,and focus on a certain area that is most problematic.• If you could be alongside the patient all day, what would you note down, and howwould that influence treatment?o How honest are people during their treatment?• You never know, but usually people tell that they eat less than they do, and are moreactive than they are.o How do you currently go about with these unknowns?• You can ask the client if you think you miss something. Or contact the diabetesnurse.• She would be interested in have a view in the refrigerator. Seeing what people buy.• Also an insight into their activity would be interesting, as it allows her to show arelation between food and activity. People tell her that they walk 10 minutes a day. She won-ders how active this is, and this allows her to create a connection between foods. How manycalories in activity combine with what type of food?o Are there restrictions you have to take in account due to the disease?• Not really. Cake for example is allowed, yet it has to be in balance with your activ-ity. This means that the amount and frequency needs to be adjusted to this.• People who use insulin injections do have specifics.EMPOWERING DIABETES PATIENTS, SUPPORT IN MAKING HELATHY FOOD CHOICES | page 43
  44. 44. • What is specific is that instead of three big meals a day,, diabetes patients are pre-ferred to eat smaller meals more often. This is better for a constant glucose levels. What ispreferred is 6 eating moments a day. Breakfast, lunch and dinner continue to be the biggestmeals, yet in between and in the evening dairy products and fruits/vegetables are advised.• When people are doing well, then medication can be adjusted afterwards. When thedietary experts sees a problem in the morning for example, this can be communicated to thediabetes nurse, who can use this in her medication advice.• How does she see the relation between eating and physical activity?o What measurements do you use?• A dietary book is almost never done. Patients don’t follow through with this sincethey consider it too time consuming.o How obtrusive are they? Time? Blood samples?• They take a lot of time.o What is most important to change in the current behavior? How does this evolveover time?She does tell people that when you are very active, you have to eat. For example eating asandwich after cycling can be important to allow for a healthy glucose level. This is usuallyasked by patients who have experienced this.EMPOWERING DIABETES PATIENTS, SUPPORT IN MAKING HELATHY FOOD CHOICES | page 44
  45. 45. 7.3. Appendix 3: Interview DiabetesPhysiotherapist• Where does she stand in relation to other healthcare personnel?o How do you get your patients? What is typical for them?• There is a four year program running in Eindhoven where people are put in 3different groups based on their motivation. This scales from not motivated at all (biggestgroup) to very motivated.• People are sent by the diabetes nurse. The patients she receives are people withspecific activity problems, or the obese people for whom this is life threatening.o On what values do you rely during treatment? And how precise are they?• You try to gain insight in their psychology. Why did they stop being active, can wedo something about those reasons? Are there self management problems? Is the goal toohigh or too low?• She also tries to give people insight in their current behaviour. Show the bottlenecks. Where can it be improved and what way?• Also making sure people try something once is important. Giving them a feel forwhat a certain activity feels like, so that they can get a sense of what is possible for them.o How long do you keep in touch with these people?• Three months on a very intensive basis with physiotherapist under track of this per-son, and afterwards the patient returns to the diabetes nurse who keeps track of this person.• The second less intensive treatment is 6 weeks with five meetings where the pa-tients are shown what are active places in Eindhoven, they take them there, and make surethey try it at least once.• The least intensive track is giving people a map of Eindhoven with active places,and be there for questions.• For a normal treatment this expert is in contact with the patient 6 times the firstyear, and then the patients goes back to the diabetes nurse four times a year.o How hard are these people to motivate, and how do you motivate them?• Very difficult. People tend to fall back in their original behaviour. Changing peoplefor a short amount of time is do-able, but to keep this over time is hard.• Even though people experience their diabetes, and have negative effects of this,they are still not very motivated to change.• You can help people, yet they have to do it themselves.• Does she consider details of the treatment? People who want to know what to do vs.People who want to know what the reasons are, and make their own plan?EMPOWERING DIABETES PATIENTS, SUPPORT IN MAKING HELATHY FOOD CHOICES | page 45
  46. 46. o People need insight to change. Why do they need more activity? How can this bedone, and what does it mean for me? How concrete/abstract is the information they receive?• People receive their blood levels from the diabetes nurse. For the movement expertit tells them whether people are improving.• They also use weight as a part of their treatment.• The HbA1C value is monitored very closely. When these values are constant, orpreferably decreasing, people feel better.• The blood values are communicated to show people how they are doing.• People who suffer from their diabetes consider this a de-motivation instead of amotivation. The problem is that they see their complaints as a problem and boundary to goout and be active. This is mostly a personality problem. Some people are just more active andeasy to motivate as others.• She works with the norm “gezond bewegen”, and is happy when people becomemore active. Getting them to the norm is usually very hard to reach. People who live up tothis, are motivated from themselves, and don’t need healthcare personnel, or at most for oc-casional questions.• What kind of extra information of influence might help the current treatment?o How do you combine your treatment with the other healthcare personnel?• She receives HbA1C values and weight values from the diabetes nurse.• The neighbourhood also pays a role in the treatment. People who live there usuallybelong to a certain social class, which influences the level of the information and motivation.People from a lower social class usually are harder to motivate as they can’t see the serious-ness of their decease, and can’t understand the insight in what is right or wrong.o What information is easy to find, and what is not?• Patients are given flyers of information about diabetes, activity and activity in theirneighbourhood. For patients this is easy to find, but hard to get them there.• What healthcare personnel look for is a digital map of Eindhoven with all the activ-ity locations, so that people can look them up at home. Paper maps are not as values, andpeople lose them, or throw them out. Also, activities change over time, and keeping the mapup to date is important for motivation.• If you could be alongside the patient all day, what would you note down, and howwould that influence treatment?o How honest are people during their treatment?• People are not necessarily honest, they overestimate their activity.o How do you currently go about with these unknowns?EMPOWERING DIABETES PATIENTS, SUPPORT IN MAKING HELATHY FOOD CHOICES | page 46
  47. 47. • She gives some patients the assignment to use a book, and write about their activ-ity. Yet this is so hard to maintain, and is not accurate that this is done less and less. Yet shemisses the objective date to compare weeks for example, and talk about these differences.• To judge the accuracy the healthcare professionals use a fair bit of psychology toget an insight in this, and judge for themselves how much they move.• She wants to know whether people become more active. In this an activity moni-tor is considered ideal by her. This shows people what they are about. This insight in theirbehaviour is one of her most powerful motivational tools. People really like to see how wellthey are doing.• How does she see the relation between eating and physical activity?o What measurements do you use?• The logbook is sometimes used, but is considered too time consuming.• When people don’t use a log, she just talks to people and tries to find out how activethey are.o How obtrusive are they? Time? Blood samples?• The measurement are obtrusive in a time sense.o What is most important to change in the current behaviour? How does this evolveover time?• They try to give people insight in the relation between eating and activity. This isvery important to show to people, as this information shows them what is going on, and howto influence this. Yet one meeting with the dietary expert and 6 meeting with an activityexpert are not that much. Generally this insight is not gained, and they try to make peopleeat a little bit healthier, and be a little more active.• They also try to combine their treatment, show people that eating a sandwich afteractivity is very important to raise your glucose levels.• People are told how active they have to be to burn off a Mars bar.EMPOWERING DIABETES PATIENTS, SUPPORT IN MAKING HELATHY FOOD CHOICES | page 47
  48. 48. 7.4. Appendix 4: Context mapping exercisesEMPOWERING DIABETES PATIENTS, SUPPORT IN MAKING HELATHY FOOD CHOICES | page 48
  52. 52. 7.5. Appendix 5: Context mapping quotes7.5.1. Interview A; Quotes- Holiday is important to get out of my daily routines, and see/experience new things.- One moment I use a wrench, and the other moment I write extensive reports.- Family is home and ground. The reason to go to work.- I especially like the combination of Italian eating and wines.- Eating is normally during a normal week very important to me.- Normally I eat breakfast, lunch sandwiches, and a simple vegetables, potatoes andmeat.- Sometimes in the evening I eat a cookie, or a little bit of chocolate.- I always make my bread in the morning, and take it to work.- Who gets home first, is the one to cook.- In the weekend we try to cook something special and eat it with friends.- During the evening I sit behind my computer, and my wife behind the TV. To dosomething together we eat a little cookie or something, and continue.- We always snack minimally.- Since my diabetes I tend to look more for “light” products. The change is actuallynot that big.- My diabetes is always in my head while I make my sandwiches or cook. During therest of the day I don’t think about it.- In the morning my medication is next to the bread, but sometimes in evening, dueto other rituals, I forget to take my evening medication.- My medication is not dependant on what I eat.- When I eat something not standard, then I think about Diabetes especially.- In the morning it is better to leave me alone. I don’t have morning grumpiness, therest of the world does.- At the end of the working day, when I go home, I feel quite happy.- I go to sleep between 10 or 11 thirty.- When I am involved behind my computer, I tend to go on longer then I should.- I should eat a little less meat, and more vegetables. But I just like meat, as it is veryimportant to me.EMPOWERING DIABETES PATIENTS, SUPPORT IN MAKING HELATHY FOOD CHOICES | page 52
  53. 53. - If I haven’t eaten meat a day, then I haven’t eaten at all.- The dietary expert couldn’t really change my diet, except maybe for smaller por-tions. All the things she said to us, we already knew. About change to a less fatty diet forexample.- When I compare myself during lunch with my collegeas, my portion sizes are verymodest.- In the evening I only get one portion, and never seconds, so why should I eat less?- When we organize a dinner, and cook well, then I eat more.- I am not an extreme eater anymore. It used to be more about quantity, now I preferquality above quantity.- When people ask me too much to do, I get very stressful.- I learned to say “no” to other people to prevent myself from getting stressed.- People are very happy, or very disappointed with work, so I prefer to do things well,and not just half. This only makes everybody unhappy.- At holiday, when I go to dinner, I want to know where my bed stands; this gives methe rest I need to go out eating.- When people something has to be done a certain way, or “you have to ...”, then Itend to not do it. You can ask me to do something.- In groups of people I don’t know, I feel uncomfortable with doing small-talk.- Stress certainly affects how healthy I am.- When the stress goes away, I feel the calm and rest. During the stress itself I don’tnotice it.- I don’t think stress influences my Diabetes.- Whether my Diabetes is under control, I feel from my body. Things like gettingthirsty are a reminder that I should consider my Diabetes.- I use my glucose meter to check my assumptions, how I think my body is doing.- I wanted the glucose meter since measuring is knowing. I just want to know what ishappening, and the 3 month period is not often enough.- Currently I don’t measure my glucose level that often, and it doesn’t hurt. I canimagine though then when I need to do it more often, it gets more uncomfortable.- When, after measuring, my glucose level is too high, then I think about what I ate,so that I know for the next time. But usually I just continue with my standard patterns.- When I see a high values, I want to check it tomorrow as well, to see if the problemis persistent.EMPOWERING DIABETES PATIENTS, SUPPORT IN MAKING HELATHY FOOD CHOICES | page 53