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Triggering Weight Management Using Digital Avatars: Prospective Cohort Study.

Moyez Jiwa1, Tafadzwa Nyanhanda1, Michael Dodson2

  • 1School of Medicine, Melbourne Clinical School, The University of Notre Dame Australia, Werribee, Australia.

Interactive Journal of Medical Research
|May 29, 2023
PubMed
Summary
This summary is machine-generated.

Digital avatars showing future weight loss can motivate individuals to take action. Those with a more accurate calorie understanding were more likely to progress in weight management, though ambitious goals were rarely met.

Keywords:
BMIbody dysmorphiacaloriedietdigitaldigital avatar, behavior change, calorie awareness, obesity, health promotion, motivation, processes of changeexercisestages of changetoolweightweight management

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Area of Science:

  • Behavioral Science
  • Health Psychology
  • Digital Health

Background:

  • Personalized digital images of future selves may motivate individuals with a BMI over 25 kg/m² to achieve a lower body weight.
  • Weight management interventions are crucial for public health, particularly for individuals with elevated BMI.

Purpose of the Study:

  • To assess if digital avatars can trigger weight management actions.
  • To identify factors distinguishing individuals motivated by avatar-based interventions.

Main Methods:

  • A 12-week prospective cohort study with 5 interviews.
  • Participants viewed personalized future-self avatars via the FutureMe app and completed readiness/process of change surveys.
  • Calorie estimation from food images and self-reported changes in diet, exercise, and weight were recorded.

Main Results:

  • 42 participants (48%) completed the study; most were women over 40 with an average BMI of 34.1.
  • Participants aimed to lose 10.5 kg, targeting 1500 calories/day and 1 hour of cycling/day.
  • Participants shifted from preparation to maintenance stages of change; overestimating calories correlated with the contemplation stage (P=.03).

Conclusions:

  • Weight management participants were predominantly women over 40, beyond the contemplation stage.
  • Accurate calorie knowledge was linked to taking weight management action.
  • Despite ambitious weight loss goals, most completers actively engaged in weight management behaviors.