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Open Access 01-12-2014 | Study protocol

Increasing the effectiveness of the Diabetes Prevention Program through if-then plans: study protocol for the randomized controlled trial of the McGill CHIP Healthy Weight Program

Authors: Bärbel Knäuper, Elena Ivanova, Zhen Xu, Melodie Chamandy, Ilka Lowensteyn, Lawrence Joseph, Aleksandra Luszczynska, Steven Grover

Published in: BMC Public Health | Issue 1/2014

Abstract

Background

The Diabetes Prevention Program (DPP) is highly effective in promoting weight loss in overweight and obese individuals. However, one-on-one DPP sessions are costly. As a cost-saving alternative, a group version of the DPP, called Group Lifestyle Balance program (GLB), has been developed but has been shown to be less effective. The aim of this two-arm parallel randomized controlled trial is to increase the effectiveness of the GLB by integrating habit formation techniques, namely if-then plans and their mental practice, into the program.

Methods/Design

A total of 154 participants will be randomized to a standard or enriched GLB program. For the enriched GLB program, if-then plans and their mental practice will be integrated into the standard GLB program. Participants will be overweight or obese men and women (BMI of 28 to 45 kg/m², waist circumference ≥ 88 for women, ≥ 102 for men, 18 to 75 years of age) who do less than 200 minutes of self-reported moderate or vigorous exercise per week. Measures will be completed at baseline, 3 months, post-intervention (12 months), and 12 months post-intervention (24 months). The primary outcome measure is weight loss at 3, 12, and 24 months. Secondary outcomes include percent reaching weight loss goal, physical activity at 3, 12, and 24 months, and weight-related risk factors (waist circumference, hemoglobin A1c, systolic/diastolic blood pressure, total cholesterol/HDL ratio). Standardized training of the life-style coaches, use of standardized manuals, and audio taping and reviewing of the sessions will ensure intervention fidelity.

Discussion

The study will provide evidence-based data on the effectiveness of an enhanced GLB intervention in promoting weight loss and in reducing weight-related risk factors for chronic health problems. Ethical clearance has been received from the Research Ethics and Compliance Board of the Faculty of Medicine Research and Graduate Studies Office at McGill University (Montreal, Canada).

Trial registration

ClinicalTrials.gov Identifier: NCT02008435. Registered 6 December 2013.

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The pre-publication history for this paper can be accessed here:http://www.biomedcentral.com/1471-2458/14/470/prepub

Title: Increasing the effectiveness of the Diabetes Prevention Program through if-then plans: study protocol for the randomized controlled trial of the McGill CHIP Healthy Weight Program
Authors: Bärbel Knäuper
Elena Ivanova
Zhen Xu
Melodie Chamandy
Ilka Lowensteyn
Lawrence Joseph
Aleksandra Luszczynska
Steven Grover
Publication date: 01-12-2014
Publisher: BioMed Central
Published in: BMC Public Health / Issue 1/2014
Electronic ISSN: 1471-2458
DOI: https://doi.org/10.1186/1471-2458-14-470

Keynote webinar | Spotlight on sleep in brain health

Springer Medicine

Increasing the effectiveness of the Diabetes Prevention Program through if-then plans: study protocol for the randomized controlled trial of the McGill CHIP Healthy Weight Program

Abstract

Background

Methods/Design

Discussion

Trial registration

Keynote webinar | Spotlight on sleep in brain health

Springer Medicine

Abstract

Background

Methods/Design

Discussion

Trial registration

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