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Wearable cameras in health research (invited talk at Stanford University School of Medicine)

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Wearable cameras in health research (invited talk at Stanford University School of Medicine)

  1. 1. British Heart FoundationHealth Promotion Research Group Wearable cameras in public health: An opportunity to change behaviour using personalised visual feedback? Aiden Doherty and Charlie Foster
  2. 2. British Heart FoundationHealth Promotion Research Group AIMS • Wearable Cameras & SenseCam introduction • Wearable cameras in population health • Moving from measurement to interventions • Most appropriate intervention to investigate?
  3. 3. British Heart FoundationHealth Promotion Research Group
  4. 4. British Heart FoundationHealth Promotion Research Group
  5. 5. British Heart FoundationHealth Promotion Research Group
  6. 6. British Heart FoundationHealth Promotion Research Group Evolution of Visual Lifelogging Devices •Much past research focus on miniaturising hardware and increasing battery-life + storage e.g. visual lifelogging domain Steve Mann. Wearable computing: a first step toward personal imaging. Computer, 30:25–32, Feb 1997. TIMELINE Tano et. al. University of Electro-Communications, Tokyo, Japan Hodges S, Berry E, Wood K. Sensecam: A wearable camera that stimulates and rehabilitates autobiographical memory. Memory. 2011;7(19):685–696. 6
  7. 7. British Heart FoundationHealth Promotion Research Group
  8. 8. British Heart FoundationHealth Promotion Research Group Behavioral Epidemiology Framework Establish links between physical activity & health Translate Identify Test into correlates interventions practice Measure physical activity Sallis & Owen (1999)
  9. 9. British Heart FoundationHealth Promotion Research Group Percentage of adults from same study meeting physical activity recommendations: NHANES (self report): 50% Accelerometer: 5% (Troiano et al, 2009) Self-report questionnaire: 38% Accelerometer: 5% (HSE, 2009)
  10. 10. British Heart FoundationHealth Promotion Research Group
  11. 11. British Heart FoundationHealth Promotion Research Group Journey time = 20 minutes
  12. 12. British Heart FoundationHealth Promotion Research Group How did they compare? Journey time = 12 min 48 sec
  13. 13. British Heart FoundationHealth Promotion Research Group Car +2 min 08 sec (S.E. 60 sec) Walk +1 min 41 sec (S.E. 45 sec) All journeys Bike +4 min 33 sec (S.E. 64 sec) +2 min 34 sec (S.E. 32 sec) Kelly et. al. ,2011, IJBNPA
  14. 14. British Heart FoundationHealth Promotion Research Group Adolescents
  15. 15. British Heart FoundationHealth Promotion Research Group Contextualising accelerometer data… Activity Type = ?? Context = ?? Actical MVPA Threshold
  16. 16. British Heart FoundationHealth Promotion Research Group Contextualising accelerometer data… • 52 people in Auckland and San Diego wear acc + SenseCam for 3 days • 49 have valid data • 386 exemplar acc episodes of MVPA, Lifestyle- Moderate, Lifestyle-Light, and Sedentary chosen • 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)
  17. 17. British Heart FoundationHealth Promotion Research Group Contextualising accelerometer data… • 311 episodes coded • 12 PA Compendium categories identified • 114 PA compendium subcategories identified • 59% episodes outdoors (14,005 METs) • 39% episodes indoors (5,790 METs) • 33% leisure time (9188 METs) • Transportation, occupational, etc. • Social interaction vs not…
  18. 18. British Heart FoundationHealth Promotion Research Group • Overcoming coding time of 63 seconds (95% CI: 41 – 86 sec)…
  19. 19. British Heart FoundationHealth Promotion Research Group Behavioral Epidemiology Framework Establish links between physical activity & health Translate Identify Test into correlates interventions practice Measure physical activity Sallis & Owen (1999)
  20. 20. British Heart FoundationHealth Promotion Research Group
  21. 21. British Heart FoundationHealth Promotion Research Group Addenbrooke’s: SenseCam Work Microsoft Research Cambridge presentation: http://research.microsoft.com/~shodges/presentations/UBICOMP_senseCam.pdf 21
  22. 22. British Heart FoundationHealth Promotion Research Group Addenbrooke’s: SenseCam Work Microsoft Research Cambridge presentation: http://research.microsoft.com/~shodges/presentations/UBICOMP_senseCam.pdf 22
  23. 23. British Heart FoundationHealth Promotion Research Group Addenbrooke’s: SenseCam Work Microsoft Research Cambridge presentation: http://research.microsoft.com/~shodges/presentations/UBICOMP_senseCam.pdf 23
  24. 24. British Heart FoundationHealth Promotion Research Group Automatic System - What I do without thinking Reflective System - What I aim to do
  25. 25. British Heart FoundationHealth Promotion Research Group
  26. 26. British Heart FoundationHealth Promotion Research Group
  27. 27. British Heart FoundationHealth Promotion Research Group Happening now, big within the next 5 years… can not stop it. 75% of my students want this… The Phone knows all about you, it is the catalyst. Your past, present and future The challenge is understanding ALL the data, the LifeSemantics
  28. 28. British Heart FoundationHealth Promotion Research Group
  29. 29. British Heart FoundationHealth Promotion Research Group Objectively measured distributions of moderate to vigorous physical activity (MVPA), light intensity physical activity (LIPA) and sedentary time during adults waking hours. Owen N et al. Br J Sports Med 2009;43:81-83
  30. 30. British Heart FoundationHealth Promotion Research GroupBreaks in Sedentary TimeWith sincere gratitude to Neville Owen and all the folk at Queensland and Baker IDI
  31. 31. British Heart FoundationHealth Promotion Research Group Proposed intervention… • Which population to target? • Which setting to administer intervention?
  32. 32. British Heart FoundationHealth Promotion Research Group AIMS • Wearable Cameras & SenseCam introduction • Wearable cameras in population health • Moving from measurement to interventions • Most appropriate intervention to investigate?
  33. 33. British Heart FoundationHealth Promotion Research Group SenseCam 2012 Symposium 3rd & 4th April , 2012 Exeter College, Oxford University, U.K.Inter-disciplinary mix of researchers,clinicians and practitioners.Applications for using this technology inresearch for both physical activity &nutrition behaviours.http://sensecam2012.dph.ox.ac.uk/
  34. 34. SENSECAM SATISFACTION SURVEY
  35. 35. Ethical Approval
  36. 36. British Heart FoundationHealth Promotion Research Group Results n= 17 n= 35 n= 12 n=20 person day sample

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