A smartphone-supported weight loss program: design of the ENGAGED randomized controlled trialReport as inadecuate

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BMC Public Health

, 12:1041

Health behavior, health promotion and society


BackgroundObesity remains a major public health challenge, demanding cost-effective and scalable weight management programs. Delivering key treatment components via mobile technology offers a potential way to reduce expensive in-person contact, thereby lowering the cost and burden of intensive weight loss programs. The ENGAGED study is a theory-guided, randomized controlled trial designed to examine the feasibility and efficacy of an abbreviated smartphone-supported weight loss program.

Methods-designNinety-six obese adults BMI 30–39.9 kg-m will be randomized to one of three treatment conditions: 1 standard behavioral weight loss STND, 2 technology-supported behavioral weight loss TECH; or 3 self-guided behavioral weight loss SELF. All groups will aim to achieve a 7% weight loss goal by reducing calorie and fat intake and progressively increasing moderate intensity physical activity to 175 minutes-week. STND and TECH will attend 8 group sessions and receive regular coaching calls during the first 6 months of the intervention; SELF will receive the Group Lifestyle Balance Program DVD’s and will not receive coaching calls. During months 1–6, TECH will use a specially designed smartphone application to monitor dietary intake, body weight, and objectively measured physical activity obtained from a Blue-tooth enabled accelerometer. STND and SELF will self-monitor on paper diaries. Linear mixed modeling will be used to examine group differences on weight loss at months 3, 6, and 12. Self-monitoring adherence and diet and activity goal attainment will be tested as mediators.

DiscussionENGAGED is an innovative weight loss intervention that integrates theory with emerging mobile technologies. We hypothesize that TECH, as compared to STND and SELF, will result in greater weight loss by virtue of improved behavioral adherence and goal achievement.

Trial registrationNCT01051713

KeywordsWeight loss Technology Physical activity AbbreviationsCSTControl systems theory

DPPDiabetes prevention program

SELFSelf-guided behavioral weight loss

STNDStandard behavioral weight loss

TECHTechnology-supported behavioral weight loss.

Electronic supplementary materialThe online version of this article doi:10.1186-1471-2458-12-1041 contains supplementary material, which is available to authorized users.

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Author: Christine A Pellegrini - Jennifer M Duncan - Arlen C Moller - Joanna Buscemi - Alyson Sularz - Andrew DeMott - Alex Pict

Source: https://link.springer.com/

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