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J Nutr Educ Behav. 2010 May-Jun;42(3):161-7. doi: 10.1016/j.jneb.2009.03.001. Epub 2010 Feb 6.

Motivation and its relationship to adherence to self-monitoring and weight loss in a 16-week Internet behavioral weight loss intervention.

Author information

  • 1Department of Nutrition and Food Science, University of Kentucky, Lexington, KY, USA. Kelly.webber@uky.edu

Abstract

OBJECTIVE:

To examine changes in motivation and the relationship of motivation to adherence to self-monitoring and weight loss in a 16-week Internet behavioral weight-loss intervention.

DESIGN:

Two-group randomized design.

SETTING:

This study was conducted over the Internet.

PARTICIPANTS:

Sixty-six women, ages 22-65, with a body mass index (BMI) between 25 and 40, and with a home computer with Internet access, participated.

INTERVENTION:

These data are from an Internet behavioral weight-loss program in which all participants received a face-to-face initial session followed by the 16-week Internet program.

MAIN OUTCOME MEASURES:

Adherence to self-monitoring and weight loss were the main outcome measures.

ANALYSIS:

Linear regression and mediation analysis using the Baron and Kenny method were conducted.

RESULTS:

Autonomous motivation increased initially and remained high for those who ultimately achieved a 5% weight loss, but declined over time for participants who did not achieve a 5% weight loss. Autonomous motivation at 4 weeks was a predictor of adherence to self-monitoring and 16-week weight loss. Adherence mediated the relationship between autonomous motivation and weight loss.

CONCLUSIONS AND IMPLICATIONS:

These results suggest that autonomous motivation may be a promising intervention target for promoting program procedure adherence and weight loss.

Copyright 2010 Society for Nutrition Education. Published by Elsevier Inc. All rights reserved.

PMID:
20138583
[PubMed - indexed for MEDLINE]
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