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Outcomes of a 12-month web-based intervention for overweight and obese men
Patrick K, Calfas KJ, Norman GJ, Rosenberg D, Zabinski MF, Sallis JF, Rock CL, Dillon LW
Annals of Behavioral Medicine 2011 Dec;42(3):391-401
clinical trial
6/10 [Eligibility criteria: No; Random allocation: Yes; Concealed allocation: No; Baseline comparability: Yes; Blind subjects: No; Blind therapists: No; Blind assessors: Yes; Adequate follow-up: No; Intention-to-treat analysis: Yes; Between-group comparisons: Yes; Point estimates and variability: Yes. Note: Eligibility criteria item does not contribute to total score] *This score has been confirmed*

BACKGROUND: This study assessed the effect of a 1-year internet-based weight loss intervention for men. METHODS: Four hundred forty-one overweight and obese men were randomized to intervention or delayed treatment. Participants completed a web-based assessment of diet and physical activity behaviors and weekly tailored web modules addressing weight-related behaviors. RESULTS: At 12 months compared to controls, intervention men decreased percent of energy from saturated fat and increased grams of fiber and fruit/vegetable servings per 1.000 kcal (p values < 0.001) and walked 16 min more per day (p < 0.05). No between-group differences in body mass index (BMI), weight, or waist circumference were seen, but among completers, men in the highest tertile of intervention participation had lower weight (98.74 versus 102.37 kg), BMI (32.38 versus 33.46), and waist circumference (42.17 versus 43.47 cm) compared to men who participated less often. CONCLUSIONS: The intervention improved diet and activity behaviors, but weight loss occurred only for those with the highest adherence.

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