Résumé :
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[BDSP. Notice produite par INIST-CNRS oR0xmGI8. Diffusion soumise à autorisation]. Objectives. We tested a community-based intervention designed to reduce cardiovascular disease risk in sedentary midlife and older women who were overweight or obese. Methods. In a randomized controlled trial conducted in 8 counties in Arkansas and Kansas, counties were assigned to the intervention (a 12-week twice-weekly heart health program) group orto the delayed-intervention control group. Ten to fifteen women were selected from each site, and participants'weight, waist circumference, diet, physical activity, and self-efficacy were measured before and after the intervention. Data were analyzed with multiple regressions. Results. Compared with the control group, participants in the intervention group had a significant decrease in body weight (-2.1 kg ; 95% confidence interval [CI]=-3.2, - 1.0), waist circumference (-2.3 in ; 95% CI=-4.2, - 0.5), and energy intake (-390 kcal/day ; 95% CI=-598, - 183) ; an increase in activity (+1637 steps/day ; 95% CI=712,2562) ; and an increase in self-efficacy for dietary and physical activity behaviors. Conclusions. Our results suggest that a community-based program can improve self-efficacy, increase physical activity, and decrease energy intake, resulting in decreased waist circumference and body weight among at-risk women.
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