“Promoting Lifestyle Change Via Tailored mHealth Feedback to Improve Health”
The overall purpose of this randomized clinical trial is to examine the effect and efficacy of the individualized, real-time, smartphone-based feedback of diet and physical activity self-monitoring on subsequent weight-control behaviors, weight loss outcomes and sustainability of patient engagement. Participants will be randomized to one of 2 groups: (1) Self-Monitoring -similar to what many people do on their own, subjects will self-monitor diet, physical activity using Fitbit and weight using a Bluetooth-enabled scale, and (2) Self-Monitoring +Feedback-participants will self-monitor as described for the Self-Monitoring group but also will receive tailored Feedback messages. The Self-Monitoring +Feedback participants will receive up to 4 daily discrete pop-up Feedback messages on the participant's smartphone delivered at random times during waking hours and tailored to content of recorded entries in the subjects' smartphone-based diaries and a weekly summary Feedback message about the participant's weight.
Behavioral - One-on-one Session
Participants will receive a 45-minute one-on-one behavioral lifestyle program for a healthful lifestyle and weight loss.
Behavioral - Self-monitoring
Participants will receive an orientation on how to self-monitor using the smartphone and other devises
Behavioral - Feedback
Participants will receive up to 4 daily feedback messages based on progress in attaining target behavior. The feedback messages will be delivered on a variable ratio schedule and tailored to data in subjects' dietary recordings
12 Months Weight Loss Study Using Feedback Messages Delivered Via Smartphone