Contingency Management for Promoting Weight Loss in University Students

NCT01053260 | Completed DMC

• 2 other identifiers: H09-0671R21HL092382-01A2
• Study Type: interventional
• Target: 47
• Locations: 1 country
• Sites: 1

Brief Summary

Rates of overweight and obesity are increasing, particularly among individuals aged 18 to 29. An estimated 25-35% of American college and university students are overweight or obese. Contingency Management (CM) is a behavioral intervention that provides tangible rewards for positive behaviors. CM has substantial evidence of efficacy in reducing smoking and drug use and increasing treatment retention and medication compliance. The current study will evaluate the efficacy of a 24-week CM intervention to promote weight loss in overweight and obese university students. Seventy participants with a body mass index (BMI) of 27.0-34.9 will be randomly assigned to one of two conditions: (a) LEARN, a manual guided behavioral weight loss program (Brownell, 2004), with weigh-ins and supportive counseling, or (b) LEARN with weigh-ins and supportive counseling plus CM. Participants in the CM condition will earn chances to win prizes each week in which they lose at least one pound. Once they lose 5% of baseline body weight, they will earn chances to win prizes for weight loss or weight maintenance. Additional chances can be earned by completing activities that promote weight loss. The primary outcomes will be absolute and proportional weight loss from pre- to post-treatment, as well as proportion of participants achieving clinically significant weight loss (\>5% of baseline weight) and proportion moving into a lower risk BMI category. Secondary outcomes will include length of retention in the study, increase in physical activity level, and improvement in nutritional quality of diet. Effects of the CM intervention on psychiatric distress and self-efficacy and motivation to engage in activities that promote weight loss will also be assessed. We predict that participants in the CM condition will lose more weight than participants assigned to the LEARN program without CM, and that more CM participants will achieve clinically significant weight loss. We also predict that participants in the CM condition will remain in the program longer, show larger increases in physical activity, show greater improvements in diet quality, and have greater increases in levels of self-efficacy and motivation than comparison group participants. Mediators and moderators of CM outcomes will also be evaluated. If efficacious in promoting weight loss in a college population, CM could help to prevent or delay later development of obesity-related medical problems.

Conditions

Contingency Management; Weight Loss

Keywords

Contingency Management; Weight Loss

Outcome Measures

Primary Outcomes (1)

• Change in Weight in Pounds

  Baseline, 12 weeks, 24 weeks, 1 year

Study Arms (2)

LEARN Program

ACTIVE COMPARATOR

Participants will receive weekly weight loss counseling based on the LEARN Program for Weight Management.

Behavioral: LEARN Program

LEARN Plus Contingency Management

EXPERIMENTAL

Participants will receive weekly counseling based on the LEARN Program for Weight Management plus contingency management. Participants can earn chances to win prizes for losing weight and completing activities that promote weight loss.

Behavioral: LEARN Program; Behavioral: Contingency Management

Interventions

LEARN Program BEHAVIORAL

Participants will receive weekly counseling based on the LEARN Program for Weight Management

LEARN Plus Contingency Management; LEARN Program

Contingency Management BEHAVIORAL

Participants can earn chances to win prizes for losing weight and completing activities that promote weight loss.

LEARN Plus Contingency Management

Eligibility Criteria

• Age: 17 Years - 29 Years
• Sex: all
• Healthy Volunteers: No
• Age Groups: Child (0-17), Adult (18-64)

You may qualify if:

• currently enrolled as an undergraduate or graduate student
• age between 17 and 29 years
• body mass index in kg/m2 (BMI) between 27.0 and 39.9
• resting blood pressure between 90-140 (systolic) and 60-90 (diastolic) mmHg
• willingness and ability to participate for 24 weeks from date of enrollment
• willingness to be randomly assigned to one of two groups

You may not qualify if:

• serious acute or chronic medical problems (e.g. diabetes mellitus, heart disease, cancer, asthma, back or joint problems, hernias, history of recent surgery)
• pregnant or breast feeding
• current, uncontrolled psychiatric condition or serious psychiatric symptoms (e.g. current suicidality, psychotic symptoms
• meet criteria for a substance dependence disorder, (5) they report daily tobacco use
• any reported history of past or current eating disorders
• in recovery from pathological gambling
• report losing more than 10% of their heaviest body weight in the last 6 months
• report participation in a formal weight loss program in the last 6 months.

Sponsors & Collaborators

• UConn Health: lead
• National Heart, Lung, and Blood Institute (NHLBI): collaborator

Study Sites (1)

University of Connecticut

Storrs, Connecticut, 06269, United States

Location

MeSH Terms

Conditions

Weight Loss

Condition Hierarchy (Ancestors)

Body Weight Changes; Body Weight; Signs and Symptoms; Pathological Conditions, Signs and Symptoms

Study Officials

• Nancy Petry, Ph.D.

  UConn Health

  PRINCIPAL INVESTIGATOR

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: NONE
• Purpose: TREATMENT
• Intervention Model: PARALLEL
• Sponsor Type: OTHER
• Responsible Party: SPONSOR

Study Record Dates

• First Submitted: January 19, 2010
• First Posted: January 21, 2010
• Study Start: February 1, 2010
• Primary Completion: April 1, 2012
• Study Completion: April 1, 2012
• Last Updated: April 9, 2019

Record last verified: 2019-04

Locations

US (1)