Background

A digital visual analogue scale (DVAS) has been validated for measuring appetite, however, use of this tool for patients with a swallowable gastric balloon (SGB) remains unexplored. Feasibility, compliance, and impact of daily appetite tracking using a DVAS on food choices and portion sizes among SIGB patients was explored.

Methods

This mixed-method study enrolled patients with obesity at different stages of a SGB program. 45-minute think-aloud interviews explored perceptions of digital appetite tracking. Participants reported their hunger and fullness levels for two weeks via a DVAS and completed weekly feedback surveys assessing the influence of tracking on appetite awareness, food choices, and portion sizes. Compliance was defined as DVAS completion at least once daily.

Results

Interviews (n=7) highlighted a low recognition of the role of appetite and a high level of emotional eating related behaviors. Nine patients used the DVAS for two weeks, with 96% compliance, and 67% tracking 2-3 times daily. Hunger and fullness scores were negatively correlated (r = -0.849; p<0.001). After two weeks of tracking, 78% reported increased hunger awareness, 73% increased fullness awareness, and 59% enhanced understanding of the connection between appetite and eating habits. Improved appetite control (food choices and reduced portion sizes) was also reported.

Conclusions

High DVAS compliance indicates its potential for increasing awareness of appetite, improving food choices, and reducing portion sizes in SGB patients. Preliminary results suggest appetite tracking using a DVAS is valid in this population and may be effective for managing dietary behaviors, self-regulation, and weight loss outcomes.