Background Since many successful dieters regain the weight theylose, programs that teach maintenance skills are needed. Wedeveloped a maintenance program based on self-regulation theoryand tested the efficacy of delivering the program face to faceor over the Internet.
Methods We randomly assigned 314 participants who had lost amean of 19.3 kg of body weight in the previous 2 years to oneof three groups: a control group, which received quarterly newsletters(105 participants), a group that received face-to-face intervention(105), and a group that received Internet-based intervention(104). The content of the programs in the two intervention groupswas the same, emphasizing daily self-weighing and self-regulation,as was the frequency of contact with the groups. The primaryoutcome was weight gain over a period of 18 months.
Results The mean (±SD) weight gain was 2.5±6.7kg in the face-to-face group, 4.7±8.6 kg in the Internetgroup, and 4.9±6.5 kg in the control group, with a significantdifference between the face-to-face group and the control group(2.4 kg; 95% confidence interval [CI], 0.002 to 10.8; P=0.05).The proportion of participants who regained 2.3 kg or more overthe 18-month period was significantly higher in the controlgroup (72.4%) than in the face-to-face group (45.7%; absolutedifference, 27%; 95% CI, 14 to 39; P<0.001) or the Internetgroup (54.8%; absolute difference, 18%; 95% CI, 5 to 30; P=0.008).Daily self-weighing increased in both intervention groups andwas associated with a decreased risk of regaining 2.3 kg ormore (P<0.001).
Conclusions As compared with receiving quarterly newsletters,a self-regulation program based on daily weighing improved maintenanceof weight loss, particularly when delivered face to face. (ClinicalTrials.govnumber, NCT00067145
[ClinicalTrials.gov]
.)
Source Information
From Brown Medical School (R.R.W., A.A.G., H.A.R.) and Miriam Hospital (R.R.W., A.A.G., H.A.R., J.L.F.) — both in Providence, RI; and the University of North Carolina, Chapel Hill (D.F.T.).
Address reprint requests to Dr. Wing at the Weight Control and Diabetes Research Center, 196 Richmond St., Providence, RI 02903, or at rwing{at}lifespan.org.
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