首页> 美国卫生研究院文献>Current Developments in Nutrition >Higher Protein Intake Does Not Augment Muscle Protein Synthetic Responses During the Early Stages of Resistance Training in Middle-Aged Adults
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Higher Protein Intake Does Not Augment Muscle Protein Synthetic Responses During the Early Stages of Resistance Training in Middle-Aged Adults

机译:在中年成年人的抗性训练的早期阶段较高的蛋白质摄入不会增加肌肉蛋白质合成响应

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摘要

Dietary protein intake augments muscle protein synthesis rates during acute recovery from resistance exercise training (RET) and can help offset age-related loss in muscle mass. Skeletal muscle tissue contains a variety of different protein pools such as myofibrillar (contractile), mitochondrial (substrate oxidation), and collagen (structural support) proteins that have been reported to have different contraction and nutrient sensitivities in controlled laboratory studies. However, no study has investigated the impact of dietary protein intake on the synthesis of these specific muscle proteins fractions during RET in a free-living setting. Therefore, we investigated the effect of dietary protein intake on daily muscle protein synthesis rates (PS) within the myofibrillar (MyoPS), mitochondrial (MitoPS), and collagen (CPS) protein fractions throughout the early phase (0 – 3 wks) of RET in middle-aged adults.
机译:膳食蛋白摄入增强肌肉蛋白质合成速率在急性恢复期间免受抗性运动训练(RET),可以帮助抵消肌肉质量的年龄相关损失。骨骼肌组织含有各种不同的蛋白质池,例如肌原纤维(收缩),线粒体(基材氧化)和胶原(结构支持)蛋白(结构支持)蛋白,其在受控实验室研究中具有不同的收缩和营养敏感性。然而,没有研究饮食蛋白摄入对在自由生活环境中的膳食蛋白摄入对这些特定肌肉蛋白分数的影响。因此,我们研究了在RET的早期阶段(0-3周)内肌原纤维(MYOPS),线粒体(MITOPS),线粒体(MITOPS)和胶原(CPS)蛋白质级分中的日常肌肉蛋白质合成速率(PS)对日粮蛋白摄入的影响在中年成年人。

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