J. Med. Internet Res. - Tweets, Apps, and Pods: Results of the 6-month Mobile Pounds Off Digitally (Mobile POD) randomized weight-loss intervention among adults.

Tópicos

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Resumo

CKGROUND: Previous interventions have shown promising results using theory-based podcasts to deliver a behavioral weight-loss intervention.OBJECTIVE: The objective of our study was to examine whether a combination of podcasting, mobile support communication, and mobile diet monitoring can assist people in weight loss.METHODS: In this 6-month, minimal contact intervention, overweight (n = 96, body mass index 32.6 kg/m(2)) adults were recruited through television advertisements and email listservs and randomly assigned to Podcast-only or Podcast+Mobile groups. Both groups received 2 podcasts per week for 3 months and 2 minipodcasts per week for months 3-6. In addition to the podcasts, the Podcast+Mobile group was also instructed to use a diet and physical activity monitoring application (app) on their mobile device and to interact with study counselors and other participants on Twitter.RESULTS: Weight loss did not differ by group at 6 months: mean -2.7% (SD 5.6%) Podcast+Mobile, n = 47; mean -2.7% (SD 5.1%) Podcast, n = 49; P = .98. Days/week of reported diet monitoring did not differ between Podcast+Mobile (mean 2.3, SD 1.9 days/week) and Podcast groups (mean 1.9, SD 1.7 days/week; P = .28) but method of monitoring did differ. Podcast+Mobile participants were 3.5 times more likely than the Podcast group to use an app to monitor diet (P = .01), whereas the majority of Podcast participants reported using the Web (14/41, 34%) or paper (12/41, 29%). There were more downloads per episode in the Podcast+Mobile group (1.4/person) than in the Podcast group (1.1/person; P < .001). The number of podcasts participants reported downloading over the 6-month period was significantly moderately correlated with weight loss in both the Podcast+Mobile (r = -.46, P = .001) and the Podcast (r = -.53, P < .001) groups. Podcast+Mobile participants felt more user control at 3 months (P = .02), but not at 6 months, and there was a trend (P = .06) toward greater elaboration among Podcast+Mobile participants. There were significant differences in reported source of social support between groups. More Podcast participants relied on friends (11/40, 28% vs 4/40, 10%; P = .045) whereas Podcast+Mobile participants relied on online sources (10/40, 25% vs 0/40; P = .001).CONCLUSIONS: Results confirm and extend previous findings showing a minimally intensive weight-loss intervention can be delivered via podcast, but prompting and mobile communication via Twitter and monitoring app without feedback did not enhance weight loss.TRIAL REGISTRATION: Clinicaltrials.gov NCT01139255; http://clinicaltrials.gov/ct2/show/NCT01139255 (Archived by WebCite at http://www.webcitation.org/625OjhiDy).

Resumo Limpo

ckground previous intervent shown promis result use theorybas podcast deliv behavior weightloss interventionobject object studi examin whether combin podcast mobil support communic mobil diet monitor can assist peopl weight lossmethod month minim contact intervent overweight n bodi mass index kgm adult recruit televis advertis email listserv random assign podcaston podcastmobil group group receiv podcast per week month minipodcast per week month addit podcast podcastmobil group also instruct use diet physic activ monitor applic app mobil devic interact studi counselor particip twitterresult weight loss differ group month mean sd podcastmobil n mean sd podcast n p daysweek report diet monitor differ podcastmobil mean sd daysweek podcast group mean sd daysweek p method monitor differ podcastmobil particip time like podcast group use app monitor diet p wherea major podcast particip report use web paper download per episod podcastmobil group person podcast group person p number podcast particip report download month period signific moder correl weight loss podcastmobil r p podcast r p group podcastmobil particip felt user control month p month trend p toward greater elabor among podcastmobil particip signific differ report sourc social support group podcast particip reli friend vs p wherea podcastmobil particip reli onlin sourc vs p conclus result confirm extend previous find show minim intens weightloss intervent can deliv via podcast prompt mobil communic via twitter monitor app without feedback enhanc weight losstrial registr clinicaltrialsgov nct httpclinicaltrialsgovctshownct archiv webcit httpwwwwebcitationorgojhidi

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