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Int J Behav Med. 2010 Sep;17(3):168-75. doi: 10.1007/s12529-009-9056-2.

Psychological factors discriminating between successful and unsuccessful weight loss in a behavioral exercise and nutrition education treatment.

Author information

  • 1YMCA of Metropolitan Atlanta, 100 Edgewood Avenue, NE, Suite 1100, Atlanta, GA 30303, USA. jamesa@ymcaatlanta.org

Abstract

BACKGROUND:

Psychological and behavioral characteristics that predict success or failure with weight-loss treatments are poorly understood.

PURPOSE:

The purpose of this study was to assess whether social cognitive theory-based factors discriminate between women who are successful and unsuccessful at weight loss.

METHOD:

Obese women (BMI = 30 to 45 kg/m(2)) who participated in a treatment of behavioral exercise support counseling and nutrition education were divided into quartiles based on percentage of body weight lost over 6 months. Factors based on social cognitive theory, both at baseline and change over 6 months, and exercise attendance were used to discriminate between the successful (highest quartile, M(change in body weight) = -9.3%; n = 40) and unsuccessful (lowest quartile, M(change in body weight) = 1.9%; n = 37) groups.

RESULTS:

Stepwise discriminant analyses indicated that body satisfaction and tension (anxiety) scores at baseline, and changes over 6 months in self-regulatory efficacy and body satisfaction, made significant contributions to predicting group membership (64% and 69% of cases were correctly classified, respectively). Attendance percentage of exercise sessions was significantly greater for the successful weight-loss group, and when added as a predictor, changes in self-regulatory efficacy and attendance made a significant contribution to predicting group membership (81% of cases were correctly classified).

CONCLUSION:

Further research may enable psychological determinants to better guide weight loss theory and treatments.

PMID:
19653103
[PubMed - indexed for MEDLINE]
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