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Response of free-living adults to behavioral treatment of obesity: attrition and compliance to exercise
Foreyt JP, Goodrick GK, Reeves RS, Raynaud AS, Darnell L, Brown AH, Gotto AM
Behavior Therapy 1993 Autumn;24(4):659-669
clinical trial
4/10 [Eligibility criteria: No; Random allocation: Yes; Concealed allocation: No; Baseline comparability: Yes; Blind subjects: No; Blind therapists: No; Blind assessors: No; Adequate follow-up: No; Intention-to-treat analysis: No; Between-group comparisons: Yes; Point estimates and variability: Yes. Note: Eligibility criteria item does not contribute to total score] *This score has been confirmed*

The effects of a behavior modification program were studied in a free- living population of mildly obese adults over a one-year period. A total of 165 subjects were randomly assigned to control or to exercise-only, diet- only, or exercise-plus-diet behavior modification groups. The diet plan consisted of a prudent, reduced-fat regimen. Most subjects chose brisk walking for exercise. After the first 3 months, diet intervention was associated with a significant reduction in weight, percent body fat, and waist circumference. After 12 months, mean weight of the exercise-plus-diet group was lower than that of the exercise-only group. Interpretation of these results is difficult, because many of the subjects failed to adhere to the behavioral recommendations. Problems in treating obese adults without close therapist scrutiny are discussed.

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