This study will examine a contingency management (CM) intervention designed to provide incentives for losing weight versus participating in a manual-guided behavioral weight loss intervention alone. Participants in the CM condition will earn the opportunity to win prizes by losing weight and completing activities that contribute to weight loss, such as keeping daily food and physical activity diaries, choosing healthy foods, exercising, and using other weight loss strategies. The investigators will determine if the CM improves weight loss relative to the usual care manual-guided intervention alone.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
56
Prize-based contingency management for weight loss
once weekly counseling sessions with research staff
University of Connecticut Health Center
Farmington, Connecticut, United States
absolute and relative weight loss
Time frame: Weeks 1-12
changes in waist circumference
Time frame: Week 1 and Week 12
proportion of participants achieving clinically significant weight loss (5% or more of baseline weight)
Time frame: Week 1 and Week 12
indices of treatment retention
Time frame: Weeks 1-12
changes on measures of diet quality, physical activity, and physiological parameters such as blood pressure, lipoproteins, insulin, and glucose levels
Time frame: Week 1 and Week 12
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