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首页> 外文期刊>The journals of gerontology.Series A. Biological sciences and medical sciences >Efficacy of whey protein supplementation on resistance exercise-induced changes in lean mass, muscle strength, and physical function in mobility-limited older adults.
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Efficacy of whey protein supplementation on resistance exercise-induced changes in lean mass, muscle strength, and physical function in mobility-limited older adults.

机译：乳清蛋白补充剂对运动受限的老年人抵抗运动引起的瘦体重，肌肉力量和身体机能变化的功效。

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Whey protein supplementation may augment resistance exercise-induced increases in muscle strength and mass. Further studies are required to determine whether this effect extends to mobility-limited older adults. The objectives of the study were to compare the effects of whey protein concentrate (WPC) supplementation to an isocaloric control on changes in whole-body lean mass, mid-thigh muscle cross-sectional area, muscle strength, and stair-climbing performance in older mobility-limited adults in response to 6 months of resistance training (RT).Eighty mobility-limited adults aged 70-85 years were randomized to receive WPC (40g/day) or an isocaloric control for 6 months. All participants also completed a progressive high-intensity RT intervention. Sample sizes were calculated based on the primary outcome of change in whole-body lean mass to give 80% power for a 0.05-level, two-sided test.Lean mass increased 1.3% and 0.6% in the WPC and control groups, respectively. Muscle cross-sectional area was increased 4.6% and 2.9% in the WPC and control groups, respectively, and muscle strength increased 16%-50% in WPC and control groups. Stair-climbing performance also improved in both groups. However, there were no statistically significant differences in the change in any of these variables between groups.These data suggest that WPC supplementation at this dose does not offer additional benefit to the effects of RT in mobility-limited older adults.
机译：乳清蛋白的补充可以增强抵抗运动引起的肌肉力量和质量的增加。需要进一步研究以确定这种影响是否会扩展到行动受限的老年人。这项研究的目的是比较乳清蛋白浓缩物（WPC）和等温控制对老年人瘦身质量，大腿中部肌肉横截面积，肌肉力量和爬楼梯性能变化的影响。对6个月的抵抗力训练（RT）有反应的行动不便的成年人。将80名年龄在70-85岁之间的行动不便的成年人随机分配接受WPC（40克/天）或等温对照6个月。所有参与者还完成了渐进性高强度RT干预。根据全身瘦体重变化的主要结果计算样本量，以进行0.05水平的双面测试获得80％的功效，WPC和对照组的瘦体重分别增加1.3％和0.6％。 WPC和对照组的肌肉截面积分别增加了4.6％和2.9％，WPC和对照组的肌肉力量增加了16％-50％。两组的爬楼梯性能也有所提高。然而，两组之间任何这些变量的变化在统计学上均没有统计学上的显着差异。这些数据表明，以这种剂量补充WPC不会对行动不便的老年人提供RT效果的额外好处。

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