Follow @bakadesuyo Yeah, usually. ( Hat tip ) BACKGROUND: Previous efforts to use incentives for weight loss have resulted insubstantial weight regain after 16 weeks. OBJECTIVE: To evaluate a longer term weight loss intervention using financialincentives. DESIGN: A 32-week, three-arm randomized controlled trial of financialincentives for weight loss consisting of a 24-week weight lossphase during which all participants were given a weight loss goalof 1 pound per week, followed by an 8-week maintenance phase. PARTICIPANTS: Veterans who were patients at the Philadelphia Veterans AffairsMedical Center with BMIs of 30-40. |
INTERVENTION: Participants were randomly assigned to participate in either aweight-monitoring program involving a consultation with a dieticianand monthly weigh-ins (control condition), or the same program withone of two financial incentive plans. Both incentive arms useddeposit contracts (DC) in which participants put their own money atrisk (matched 1:1), which they lost if they failed to lose weight.In one incentive arm participants were told that the period after24 weeks was for weight-loss maintenance; in the other, no suchdistinction was made. MAIN MEASURE: Weight loss after 32 weeks. KEY RESULTS: Results were analyzed using intention-to-treat. There was nodifference in weight loss between the incentive arms (P = 0.80).Incentive participants lost more weight than control participants[mean DC = 8.70 pounds, mean control = 1.17, P = 0.04, 95% CI ofthe difference in means (0.56, 14.50)].
Follow-up data 36 weeksafter the 32-week intervention had ended indicated weight regain;the net weight loss between the incentive and control groups was nolonger significant (mean DC = 1.2 pounds, 95% CI, -2.58-5.00; meancontrol = 0.27, 95% CI, -3.77-4.30, P = 0.76). CONCLUSIONS: Financial incentives produced significant weight loss over an8-month intervention; however, participants regained weightpost-intervention. Source: "Financial incentives for extended weight loss: arandomized, controlled trial." from J Gen Intern Med. 2011Jun;26(6):621-6. Epub 2011 Jan 20.
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