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Using Novel Behavioral Approaches to Improve Long-Term Weight Loss Outcomes

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT02156752
Recruitment Status : Completed
First Posted : June 5, 2014
Last Update Posted : September 18, 2019
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
Information provided by (Responsible Party):
The Miriam Hospital

Brief Summary:
This project is a randomized controlled trial to compare the efficacy of two interventions- one based on Acceptance and Commitment Therapy (ACT) and one based on Self-Regulation (SR)- and a control group (called weight loss only (WLO)) on 24-month weight loss outcomes. All participants will first participate in an initial 4-month standard behavioral weight loss program. Participants will be randomized into 1 of 3 groups and receive a 3-part workshop; the ACT workshop will teach ACT skills including acceptance and mindfulness techniques designed to promote behavior change and health behavior persistence consistent with one's core values. The SR program will focus on self-regulation, regular weighing, and modeling behavior on successful maintainers. The WLO group will receive a control workshop focused on cooking demonstrations and general nutrition topics.The primary outcome is weight loss at 24 months. The secondary outcome is change in psychological flexibility, a critical component of ACT interventions and a potential innovative mediating mechanism. Primary Hypothesis: At 24 months, the ACT group will show significantly greater weight loss as compared to the SR and WLO groups.

Condition or disease Intervention/treatment Phase
Obesity Behavioral: ACT Behavioral: SR Behavioral: WLO Not Applicable

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Study Type : Interventional  (Clinical Trial)
Estimated Enrollment : 190 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Study Start Date : January 2015
Actual Primary Completion Date : July 1, 2018
Actual Study Completion Date : August 29, 2019

Resource links provided by the National Library of Medicine

Arm Intervention/treatment
Experimental: ACT
Behavioral weight loss plus techniques from Acceptance and Commitment Therapy
Behavioral: ACT
Treatment is based on Acceptance and Commitment Therapy

Active Comparator: SR
Behavioral weight loss plus self-regulation techniques
Behavioral: SR
Treatment is based on Self-Regulation theory.

Active Comparator: WLO
Behavioral weight loss plus cooking tips and demonstrations
Behavioral: WLO
Treatment is based on cooking tips and demonstrations.

Primary Outcome Measures :
  1. Weight [ Time Frame: 24 months ]

Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.

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Ages Eligible for Study:   30 Years to 65 Years   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes

Inclusion Criteria:

  • BMI 27.5-40
  • Age 30-65

Exclusion Criteria:

  • currently participating in a weight loss program
  • pregnant or planning to become pregnant
  • medical condition that would preclude physical activity
  • terminal illness
  • plans to relocate
  • history of substance abuse or psychological problems that are judged by the investigators to be likely to interfere with study participation

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT02156752

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United States, Rhode Island
Weight Control and Diabetes Research Center
Providence, Rhode Island, United States, 02903
Sponsors and Collaborators
The Miriam Hospital
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
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Principal Investigator: Jason Lillis, Ph.D. Lifespan/ The Miriam Hospital
Publications automatically indexed to this study by Identifier (NCT Number):
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Responsible Party: The Miriam Hospital Identifier: NCT02156752    
Other Study ID Numbers: 5K23KDK097143
First Posted: June 5, 2014    Key Record Dates
Last Update Posted: September 18, 2019
Last Verified: August 2019