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Daily physical activity and macronutrient distribution of low-calorie diets jointly affect body fat reduction in obese women.
Authors: Lopez-Fontana, C.M. (Constanza Matilde)
Sanchez-Villegas, A. (Almudena)
Martinez-Gonzalez, M.A. (Miguel Angel)
Martinez, J.A. (José Alfredo)
Keywords: Materias Investigacion::Ciencias de la Salud::Endocrinología
Materias Investigacion::Ciencias de la Salud::Nutrición y dietética
Issue Date: 2009
Publisher: National Research Council Canada
Publisher version: doi:10.1139/H09-015
ISSN: 1715-5312
Citation: Lopez-Fontana C.M., Sanchez-Villegas A., Martinez-Gonzalez M.A., Martinez J.A. "Daily physical activity and macronutrient distribution of low-calorie diets jointly affect body fat reduction in obese women". Appl.Physiol.Nutr.Metab. 2009 Aug;34(4):595-602.
Abstract
Inadequate dietary patterns and sedentary lifestyles are believed to be important factors in predisposing people to obesity. This study analyzed the potential interaction between habitual physical activity and the carbohydrate (CHO)-fat distribution in 2 hypocaloric diets and the impact of such interplay on body composition changes. Forty healthy obese women, 20–50 years old, were randomly assigned to a high- or low-CHO energy-restricted diet, which was low or high in fat, respectively, during 10 weeks. Baseline and final measurements were performed to assess dietary habits, resting metabolic rate, and body composition changes. Physical activity was measured with a triaxial accelerometer and with a questionnaire. There were no significant differences in anthropometric and metabolic variables between both dietary groups at baseline. However, there was a positive correlation between total free-living physical activity and arm muscle preservation after 10 weeks (r = 0.371; p = 0.024). Interestingly, an interaction between macronutrient (CHO–fat distribution) intake and physical activity was found, since less-active subjects with a high-CHO–low-fat diet showed a greater fat loss than those more active with a lower-CHO–high-fat diet, whereas more-active subjects with a high-CHO–low-fat diet showed a smaller fat loss than those receiving a low-CHO–high-fat diet. Physical activity and the macronutrient content of energyrestricted diets, when designed to promote body fat mass reduction, should be considered together to better predict the outcome.
Permanent link: http://hdl.handle.net/10171/6382
Appears in Collections:DA - Farmacia - CAFT - Línea Especial de Nutrición
DA - Farmacia - CAFT - Artículos de revista
DA - Medicina - MPSP -Artículos de revista

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