A Behavioral Intervention for Reducing Obesity

Not Applicable

Completed

• Conditions: Obesity; Overweight
• Interventions: Behavioral: contingency management; Behavioral: weight loss manual-guided individual therapy sessions

• Registration Number: NCT00892788
• Lead Sponsor: UConn Health

Brief Summary

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.

Detailed Description

Not available

Study Timeline

• Study Start: 2009-04
• Study First Submitted: 2009-04-03
• Study First Submitted QC: 2009-05-02
• Study First Posted: 2009-05-05
• Primary Completion: 2010-07
• Study Completion: 2010-07
• Status Verified: 2019-04
• Last Update Submitted: 2019-04-05
• Last Update Posted: 2019-04-09

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 56

Inclusion Criteria

• age between 18 and 65 years
• body mass index in kg/m2 (BMI) between 30.0 and 39.9
• seated blood pressure of 100/60-140/90 mmHg
• ability to speak English and read at the 6th grade level
• willingness to be randomly assigned to one of two groups

Exclusion Criteria

• any serious acute or chronic medical problems that may impact dietary or exercise regimens or impact weight loss
• psychiatric exclusions

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
B	contingency management	Participants assigned to Group B will receive the LEARN manual and will meet with research staff each week for weigh-in and supportive counseling. They will also receive contingency management or the opportunity to earn draws with the chance of winning prizes for losing weight and completing healthy activities.
A	weight loss manual-guided individual therapy sessions	Participants assigned to Group A will receive the LEARN (Lifestyle, Exercise, Attitudes, Relationships, Nutrition) Program weight loss manual and will be instructed to read a section of the manual each week and complete suggested activities. They will also meet with the research staff once a week for weigh-in and supportive counseling.
B	weight loss manual-guided individual therapy sessions	Participants assigned to Group B will receive the LEARN manual and will meet with research staff each week for weigh-in and supportive counseling. They will also receive contingency management or the opportunity to earn draws with the chance of winning prizes for losing weight and completing healthy activities.

Primary Outcome Measures

Name	Time	Method
absolute and relative weight loss	Weeks 1-12
changes in waist circumference	Week 1 and Week 12
proportion of participants achieving clinically significant weight loss (5% or more of baseline weight)	Week 1 and Week 12

Secondary Outcome Measures

Name	Time	Method
indices of treatment retention	Weeks 1-12
changes on measures of diet quality, physical activity, and physiological parameters such as blood pressure, lipoproteins, insulin, and glucose levels	Week 1 and Week 12

Trial Locations

Locations (1)

University of Connecticut Health Center; 🇺🇸 Farmington, Connecticut, United States