Abstract
Background: A plethora of weight management apps are available, but many individuals, especially those living with overweight
and obesity, still struggle to achieve adequate weight loss. An emerging area in weight management is the support for one’s
self-regulation over momentary eating impulses.
Objective: This study aims to examine the feasibility and effectiveness of a novel artificial intelligence–assisted weight
management app in improving eating behaviors in a Southeast Asian cohort.
Methods: A single-group pretest-posttest study was conducted. Participants completed the 1-week run-in period of a 12-week
app-based weight management program called the Eating Trigger-Response Inhibition Program (eTRIP). This self-monitoring
system was built upon 3 main components, namely, (1) chatbot-based check-ins on eating lapse triggers, (2) food-based computer
vision image recognition (system built based on local food items), and (3) automated time-based nudges and meal stopwatch. At
every mealtime, participants were prompted to take a picture of their food items, which were identified by a computer vision
image recognition technology, thereby triggering a set of chatbot-initiated questions on eating triggers such as who the users were
eating with. Paired 2-sided t tests were used to compare the differences in the psychobehavioral constructs before and after the
7-day program, including overeating habits, snacking habits, consideration of future consequences, self-regulation of eating
behaviors, anxiety, depression, and physical activity. Qualitative feedback were analyzed by content analysis according to 4 steps,
namely, decontextualization, recontextualization, categorization, and compilation.
Results: The mean age, self-reported BMI, and waist circumference of the participants were 31.25 (SD 9.98) years, 28.86 (SD
7.02) kg/m2, and 92.60 (SD 18.24) cm, respectively. There were significant improvements in all the 7 psychobehavioral constructs,
except for anxiety. After adjusting for multiple comparisons, statistically significant improvements were found for overeating
habits (mean –0.32, SD 1.16; P<.001), snacking habits (mean –0.22, SD 1.12; P<.002), self-regulation of eating behavior (mean 0.08, SD 0.49; P=.007), depression (mean –0.12, SD 0.74; P=.007), and physical activity (mean 1288.60, SD 3055.20 metabolic
equivalent task-min/day; P<.001). Forty-one participants reported skipping at least 1 meal (ie, breakfast, lunch, or dinner),
summing to 578 (67.1%) of the 862 meals skipped. Of the 230 participants, 80 (34.8%) provided textual feedback that indicated
satisfactory user experience with eTRIP. Four themes emerged, namely, (1) becoming more mindful of self-monitoring, (2)
personalized reminders with prompts and chatbot, (3) food logging with image recognition, and (4) engaging with a simple, easy,
and appealing user interface. The attrition rate was 8.4% (21/251).
Conclusions: eTRIP is a feasible and effective weight management program to be tested in a larger population for its effectiveness
and sustainability as a personalized weight management program for people with overweight and obesity.
Trial Registration: ClinicalTrials.gov NCT04833803; https://classic.clinicaltrials.gov/ct2/show/NCT04833803
and obesity, still struggle to achieve adequate weight loss. An emerging area in weight management is the support for one’s
self-regulation over momentary eating impulses.
Objective: This study aims to examine the feasibility and effectiveness of a novel artificial intelligence–assisted weight
management app in improving eating behaviors in a Southeast Asian cohort.
Methods: A single-group pretest-posttest study was conducted. Participants completed the 1-week run-in period of a 12-week
app-based weight management program called the Eating Trigger-Response Inhibition Program (eTRIP). This self-monitoring
system was built upon 3 main components, namely, (1) chatbot-based check-ins on eating lapse triggers, (2) food-based computer
vision image recognition (system built based on local food items), and (3) automated time-based nudges and meal stopwatch. At
every mealtime, participants were prompted to take a picture of their food items, which were identified by a computer vision
image recognition technology, thereby triggering a set of chatbot-initiated questions on eating triggers such as who the users were
eating with. Paired 2-sided t tests were used to compare the differences in the psychobehavioral constructs before and after the
7-day program, including overeating habits, snacking habits, consideration of future consequences, self-regulation of eating
behaviors, anxiety, depression, and physical activity. Qualitative feedback were analyzed by content analysis according to 4 steps,
namely, decontextualization, recontextualization, categorization, and compilation.
Results: The mean age, self-reported BMI, and waist circumference of the participants were 31.25 (SD 9.98) years, 28.86 (SD
7.02) kg/m2, and 92.60 (SD 18.24) cm, respectively. There were significant improvements in all the 7 psychobehavioral constructs,
except for anxiety. After adjusting for multiple comparisons, statistically significant improvements were found for overeating
habits (mean –0.32, SD 1.16; P<.001), snacking habits (mean –0.22, SD 1.12; P<.002), self-regulation of eating behavior (mean 0.08, SD 0.49; P=.007), depression (mean –0.12, SD 0.74; P=.007), and physical activity (mean 1288.60, SD 3055.20 metabolic
equivalent task-min/day; P<.001). Forty-one participants reported skipping at least 1 meal (ie, breakfast, lunch, or dinner),
summing to 578 (67.1%) of the 862 meals skipped. Of the 230 participants, 80 (34.8%) provided textual feedback that indicated
satisfactory user experience with eTRIP. Four themes emerged, namely, (1) becoming more mindful of self-monitoring, (2)
personalized reminders with prompts and chatbot, (3) food logging with image recognition, and (4) engaging with a simple, easy,
and appealing user interface. The attrition rate was 8.4% (21/251).
Conclusions: eTRIP is a feasible and effective weight management program to be tested in a larger population for its effectiveness
and sustainability as a personalized weight management program for people with overweight and obesity.
Trial Registration: ClinicalTrials.gov NCT04833803; https://classic.clinicaltrials.gov/ct2/show/NCT04833803
| Original language | English |
|---|---|
| Journal | Journal of Medical Internet Research |
| Publication status | Accepted/In press - 12 Mar 2024 |
