J Telemed Telecare - Design and pilot results of a mobile phone weight-loss application for women starting a meal replacement programme.


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We developed and tested a mobile phone application (app) to support individuals embarking on a partial meal replacement programme (MRP). Overweight or obese women were randomly allocated to one of two study groups. The intervention group received an MRP Support app. The control group received a static app based on the information available with the MRP. A total of 58 adult women (Support n = 28; Control n = 30) participated in the 8-week trial. Their BMI was 26-43 kg/m(2). Usage data suggested that the intervention group were more engaged with using the app throughout the study period. Mixed modelling revealed that the difference in weight loss between the intervention and control groups (estimated mean, EM = 3.2% and 2.2% respectively) was not significant (P = 0.08). Objective data suggested that users of the Support app were more engaged than those using the control app. A total of 1098 prompts (54%) asking people in the intervention group to enter their meals were completed prior to the evening prompt. Women in the intervention group reported a greater increase in positive affect (i.e. mood) than those in the control group (EM = 0.48 and -0.01, respectively) (P = 0.012). At Week 8, those in the control group reported a greater decrease in the effort they were willing to put into staying on the diet than those who received the Support app (EM = -2.8 and -1.4, respectively) (P = 0.024). The Support app could be a useful adjunct to existing MRPs for psychological outcomes.

Resumo Limpo

develop test mobil phone applic app support individu embark partial meal replac programm mrp overweight obes women random alloc one two studi group intervent group receiv mrp support app control group receiv static app base inform avail mrp total adult women support n control n particip week trial bmi kgm usag data suggest intervent group engag use app throughout studi period mix model reveal differ weight loss intervent control group estim mean em respect signific p object data suggest user support app engag use control app total prompt ask peopl intervent group enter meal complet prior even prompt women intervent group report greater increas posit affect ie mood control group em respect p week control group report greater decreas effort will put stay diet receiv support app em respect p support app use adjunct exist mrps psycholog outcom

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