The Effects of If‐Then Plans on Weight Loss: Results of the McGill CHIP Healthy Weight Program Randomized Controlled Trial

Objective The NIH‐developed Diabetes Prevention Program (DPP) is successful in achieving clinically significant weight loss in individuals with overweight/obesity when delivered one‐on‐one. The group‐based DPP is less effective, with average weight losses of only 3.5%. The objective of this study wa...

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Published in:Obesity (Silver Spring, Md.) Md.), 2018-08, Vol.26 (8), p.1285-1295
Main Authors: Knäuper, Bärbel, Carrière, Kimberly, Frayn, Mallory, Ivanova, Elena, Xu, Zhen, Ames‐Bull, Anaïs, Islam, Farah, Lowensteyn, Ilka, Sadikaj, Gentiana, Luszczynska, Aleksandra, Grover, Steven
Format: Article
Language:English
Subjects:
Behavior modification
Clinical psychology
Clinical trials
Cognition & reasoning
Cognitive behavioral therapy
Diabetes
Habits
Health care
Lifestyles
Obesity
Objectives
Prevention programs
Studies
Weight control
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Summary:Objective The NIH‐developed Diabetes Prevention Program (DPP) is successful in achieving clinically significant weight loss in individuals with overweight/obesity when delivered one‐on‐one. The group‐based DPP is less effective, with average weight losses of only 3.5%. The objective of this study was to increase weight loss outcomes of the group‐based DPP by integrating habit formation tools (i.e., if‐then plans). This two‐arm randomized controlled trial tested the efficacy of the habit formation–enhanced group‐based DPP compared with the standard group‐based DPP on changes in body weight (primary outcome). This study presents the 3‐ and 12‐month results of this 24‐month trial. Methods A total of 208 participants were randomly assigned to the standard or enhanced DPP, and 172 participated. Participants were men and women with overweight/obesity who self‐reported less than 200 min/wk of exercise. Results Both groups achieved high weight losses at 3 (5.76%) and 12 (9.98%) months, with no differences between groups (χ2 
ISSN:1930-7381
1930-739X
DOI:10.1002/oby.22226