AIMS    Wearable cameras as potential criterion measure of     activity type & context in free living scenarios...     Its...
British Heart FoundationHealth Promotion Research Group
CLARITY Centre, DublinSocial/Agency Collaborators               Industry Collaborators                              CSET C...
Microsoft
Behavioural Epidemiology                    Framework  links between  physical  activity &health                          ...
If you cannot measure it,      you cannot improve it...Lord Kelvin
Maybe we should look for some ideas    in computer science domain...British Heart FoundationHealth Promotion Research Group
Self report is limited...                                            Recall error...                               Compreh...
Accelerometers != behaviour      Accelerometers measure activity        levels but not behaviours...British Heart Foundati...
% adults meeting physical activity   recommendations … from same study!                    Self report   : 50%            ...
GPS also has limitations...   GPS + GIS doesnt measure at-the-          moment context...British Heart FoundationHealth Pr...
GIS doesnt live in-the-moment...   GPS + GIS doesnt measure at-the-          moment context...British Heart FoundationHeal...
GPS + GIS doesnt measure at-the-          moment context...British Heart FoundationHealth Promotion Research Group
Maybe we should look for some ideas    in computer science domain...British Heart FoundationHealth Promotion Research Group
Photos supporting diet recall...Arab, Eu J Clin Nutr 2011;65(10):1156–62
Mann, Computer 1997, 30; 25-32Tano, ICME conf 2006; 649-652
Autographer
Android phoneQiu, Multimedia Modelling Conf. 2012
Google Glass
SenseCamSenseCamHodges, Ubicomp conf., 2006
Day in the life of video...SenseCamHodges, Ubicomp conf., 2006
Ethics ok                       SenseCamBritish Heart FoundationHealth Promotion Research Group
SenseCam & Active travel...Active TravelU.K. National Travel Survey
Journey time = 20 minutesKelly, IJBNPA 2011, 8:44
Journey time = 12 min 38 secKelly, IJBNPA 2011, 8:44
Self-report error in adults travel...   Car +2 min 08 sec (S.E. 60 sec)                                                   ...
test             Then show Paul Journey2School...Kelly, 2012, Am J Prev Med 43(5), 546 – 550
AdolescentsBias of +10 seconds per journey (95%CI -33 to +53)Limits of agreement ~ 16.5 minutes....Kelly, 2012, Am J Prev ...
test             Then show Paul Journey2School...Kelly, 2012, Am J Prev Med 43(5), 546 – 550
SenseCam & accelerometer...          Activity Type = ??          Context = ??                                  Actical MVP...
backgroundDoherty, Lancet conf. 2012 (in press)
backgroundDoherty, Lancet conf. 2012 (in press)
Doherty, Lancet conf. 2012 (in press)
Can SenseCam images identify         accelerometer episodes?   79% of episodes could be coded (n=311)        - 14% had no ...
Can SenseCam classify accelerometer       episodes by activity type and context?   311 episodes coded       - 12 PA Compen...
Activity type...Doherty, Lancet conf. 2012 (in press)
Activity context...Doherty, Lancet conf. 2012 (in press)
Data mangement of images?          1.8 million images for single study:              - 150 participants              - 6 d...
Sitting accelerometer signalBritish Heart FoundationHealth Promotion Research Group
Walking accelerometer signalBritish Heart FoundationHealth Promotion Research Group
Driving accelerometer signalBritish Heart FoundationHealth Promotion Research Group
Pattern recognition...SenseCamHodges, Ubicomp conf., 2006
FUTURE OF WEARABLE          CAMEARAS IN HEALTH ?British Heart FoundationHealth Promotion Research Group
NEW CRITERION MEASURE OF   EXPOSURE TO LIFESTYLE BEHAVIOURS   IN FREE-LIVING SCENARIOS...         AND THE SOCIAL & ENVIRON...
Existing pattern recognition studies only   trained in the lab...            Better behaviour identification critical in  ...
Behavioural Epidemiology                    Framework  links between  physical  activity &health                          ...
test                         backgroundBritish Heart FoundationHealth Promotion Research Group
Engaging images help motivation?            Behavioural epi framework again...Browne, Memory 2011; 19(7); 713-722St. Jacqu...
Facilitating self-efficacy?            Behavioural epi framework again...Bauman, Lancet 2012; 380; 258-271
Identifying opportunities?Healy, Diabetes Care 2008Linden, IEEE Inet Comp 2003;7(1);76- 80
In summary...       - Wearable cameras are becoming a useful  criterion measure     - In future they may facilitate behavi...
10 hong kong_oct_2012
10 hong kong_oct_2012
10 hong kong_oct_2012
10 hong kong_oct_2012
10 hong kong_oct_2012
10 hong kong_oct_2012
10 hong kong_oct_2012
10 hong kong_oct_2012
10 hong kong_oct_2012
10 hong kong_oct_2012
10 hong kong_oct_2012
10 hong kong_oct_2012
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10 hong kong_oct_2012

  1. 1. AIMS Wearable cameras as potential criterion measure of activity type & context in free living scenarios... Its worthwhile walking down the corridor to your computer science department...British Heart FoundationHealth Promotion Research Group
  2. 2. British Heart FoundationHealth Promotion Research Group
  3. 3. CLARITY Centre, DublinSocial/Agency Collaborators Industry Collaborators CSET Core
  4. 4. Microsoft
  5. 5. Behavioural Epidemiology Framework links between physical activity &health Translate Identify Test into correlates interventions practice Measure physical activitySallis & Owen, 1999
  6. 6. If you cannot measure it, you cannot improve it...Lord Kelvin
  7. 7. Maybe we should look for some ideas in computer science domain...British Heart FoundationHealth Promotion Research Group
  8. 8. Self report is limited... Recall error... Comprehension problems... Social desirability error...Kelly, IJBNPA 2011, 8:44Armstrong, Sprts Med 06, 36:1067–1086
  9. 9. Accelerometers != behaviour Accelerometers measure activity levels but not behaviours...British Heart FoundationHealth Promotion Research Group
  10. 10. % adults meeting physical activity recommendations … from same study! Self report : 50% Accelerometer: 5% Self-report : 38% Accelerometer: 5%USA NHANES: Toiano et. al., 2008HSE: 2009
  11. 11. GPS also has limitations... GPS + GIS doesnt measure at-the- moment context...British Heart FoundationHealth Promotion Research Group
  12. 12. GIS doesnt live in-the-moment... GPS + GIS doesnt measure at-the- moment context...British Heart FoundationHealth Promotion Research Group
  13. 13. GPS + GIS doesnt measure at-the- moment context...British Heart FoundationHealth Promotion Research Group
  14. 14. Maybe we should look for some ideas in computer science domain...British Heart FoundationHealth Promotion Research Group
  15. 15. Photos supporting diet recall...Arab, Eu J Clin Nutr 2011;65(10):1156–62
  16. 16. Mann, Computer 1997, 30; 25-32Tano, ICME conf 2006; 649-652
  17. 17. Autographer
  18. 18. Android phoneQiu, Multimedia Modelling Conf. 2012
  19. 19. Google Glass
  20. 20. SenseCamSenseCamHodges, Ubicomp conf., 2006
  21. 21. Day in the life of video...SenseCamHodges, Ubicomp conf., 2006
  22. 22. Ethics ok SenseCamBritish Heart FoundationHealth Promotion Research Group
  23. 23. SenseCam & Active travel...Active TravelU.K. National Travel Survey
  24. 24. Journey time = 20 minutesKelly, IJBNPA 2011, 8:44
  25. 25. Journey time = 12 min 38 secKelly, IJBNPA 2011, 8:44
  26. 26. Self-report error in adults travel... Car +2 min 08 sec (S.E. 60 sec) Walk +1 min 41 sec (S.E. 45 sec) All journeys +2 min 34 sec Bike +4 min 33 sec (S.E. 64 sec) (S.E. 32 sec)Kelly, IJBNPA 2011, 8:44
  27. 27. test Then show Paul Journey2School...Kelly, 2012, Am J Prev Med 43(5), 546 – 550
  28. 28. AdolescentsBias of +10 seconds per journey (95%CI -33 to +53)Limits of agreement ~ 16.5 minutes....Kelly, 2012, Am J Prev Med 43(5), 546 – 550
  29. 29. test Then show Paul Journey2School...Kelly, 2012, Am J Prev Med 43(5), 546 – 550
  30. 30. SenseCam & accelerometer... Activity Type = ?? Context = ?? Actical MVPA Threshold Journey background minutes time = 20British Heart FoundationHealth Promotion Research Group
  31. 31. backgroundDoherty, Lancet conf. 2012 (in press)
  32. 32. backgroundDoherty, Lancet conf. 2012 (in press)
  33. 33. Doherty, Lancet conf. 2012 (in press)
  34. 34. Can SenseCam images identify accelerometer episodes? 79% of episodes could be coded (n=311) - 14% had no associated image data (n=57) - 3% unsure of activity from images (n=10) - 2% images too dark to code (n=7)Doherty, Lancet conf. 2012 (in press)
  35. 35. Can SenseCam classify accelerometer episodes by activity type and context? 311 episodes coded - 12 PA Compendium categories identified - 114 PA compendium subcategories identified 59% outdoors, 39% indoors 33% leisure time, 33% transportation, 18% domestic, 15% occupational 45% episodes non-social, 33% direct social, 22% social/not-engagedDoherty, Lancet conf. 2012 (in press)
  36. 36. Activity type...Doherty, Lancet conf. 2012 (in press)
  37. 37. Activity context...Doherty, Lancet conf. 2012 (in press)
  38. 38. Data mangement of images? 1.8 million images for single study: - 150 participants - 6 days of travel - 2000 images per dayBritish Heart FoundationHealth Promotion Research Group
  39. 39. Sitting accelerometer signalBritish Heart FoundationHealth Promotion Research Group
  40. 40. Walking accelerometer signalBritish Heart FoundationHealth Promotion Research Group
  41. 41. Driving accelerometer signalBritish Heart FoundationHealth Promotion Research Group
  42. 42. Pattern recognition...SenseCamHodges, Ubicomp conf., 2006
  43. 43. FUTURE OF WEARABLE CAMEARAS IN HEALTH ?British Heart FoundationHealth Promotion Research Group
  44. 44. NEW CRITERION MEASURE OF EXPOSURE TO LIFESTYLE BEHAVIOURS IN FREE-LIVING SCENARIOS... AND THE SOCIAL & ENVIRONMENTAL CONTEXT IN WHICH THEY OCCUR...British Heart FoundationHealth Promotion Research Group
  45. 45. Existing pattern recognition studies only trained in the lab... Better behaviour identification critical in cross-section & longitudinal studies...Staudenmayer, MSSE 2012;44:S61-S67Zhang, Med Sci Sports Exerc. 2012;44:742-8
  46. 46. Behavioural Epidemiology Framework links between physical activity &health Translate Identify Test into correlates interventions practice Measure physical activitySallis & Owen, 1999
  47. 47. test backgroundBritish Heart FoundationHealth Promotion Research Group
  48. 48. Engaging images help motivation? Behavioural epi framework again...Browne, Memory 2011; 19(7); 713-722St. Jacques, Memory 2011;19(7);713-722
  49. 49. Facilitating self-efficacy? Behavioural epi framework again...Bauman, Lancet 2012; 380; 258-271
  50. 50. Identifying opportunities?Healy, Diabetes Care 2008Linden, IEEE Inet Comp 2003;7(1);76- 80
  51. 51. In summary... - Wearable cameras are becoming a useful criterion measure - In future they may facilitate behaviour change MAKE SURE TO VISIT YOUR COMPUTER SCIENCE AND ENGINEERING DEPARTMENTS!British Heart FoundationHealth Promotion Research Group

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