WEIGHT LOSS AND RESISTANCE TRAINING IN OLDER WOMEN

这项研究旨在评估耐药性的影响 训练对身体成分、能量和蛋白质代谢的影响 在老年妇女减肥期间提供了一个明确的营养饮食。 身体组成、肌肉力量、大小和功能、静息能量 消耗、氮平衡以及全身和肌肉蛋白质动力学 也将被检查。感兴趣的主要指标是蛋白质 新陈代谢和身体组成。我们假设减轻体重 在仅通过饮食能量限制的中度超重老年女性中， 将导致FFM、全身蛋白质质量和肌肉减少 马萨诸塞州阻力训练，有或没有饮食能量限制， 将保留或增强FFM、全身蛋白质质量和肌肉质量。 饮食引起的老年妇女减肥将减少全身氮 平衡，降低全身蛋白质周转率，并减少 肌肉蛋白质合成率。阻力训练，有或没有 低热量饮食，将保持或提高这些指数的蛋白质 新陈代谢.无抵抗力的能量限制导致体重减轻 训练将导致测试代谢率显著降低 而阻力训练，有或没有能量限制，将 保持能量代谢率。通过能量限制减肥 如果没有阻力训练， 肌肉力量、肌肉力量和肌肉功能。电阻 训练，有或没有低热量的饮食，将提高肌肉 加强和保持肌肉力量和肌肉功能。

The proposed study is designed to assess the effects of resistance training on body composition and energy and protein metabolism changes during weight loss in older women provided a defined nutrient diet. Body composition, muscle strength, size and function, resting energy expenditure, nitrogen balance and whole-body and muscle protein kinetics also will be examined. Primary measures of interest are protein metabolism and body composition. We hypothesize that weight reduction in moderately overweight older women by dietary energy restriction alone will results in reductions in FFM, whole body protein mass and muscle mass. Resistance training , with or without dietary energy restriction, will preserve or enhance FFM, whole body protein mass and muscle mass. Diet-induced weight loss in older women will reduce whole-body nitrogen balance, lowere rates of whole body protein turnover, and decrease the rate of muscle protein sysnthesis. Resistance training, with or without a hypocaloric diet, will preserve or enhance these indices of protein metabolism. Weight loss from energy restriction without resistance training will result in significant reductions in testing metabolic rate while resistance training, with or without energy retriction, will preserve rates of energy metabolism. Weight loss via energy restriction without resistance training will result in significant declines in muscle strength, muscle power and muscle function. Resistance training, with or without hypocaloric diet, will enhance muscle stremngth and preserve muscle power and muscle function.