短期充足的蛋白质摄入量与久坐不动的成年人抵抗运动相结合的生理和生化变量之间的相关性
Kyung-Wan Baek1,2, Jong-Hwa Won3, Chae-Been Kim4
1Department of Physical Education, Gyeongsang National University, Jinju, 52828, Republic of Korea. baekgnu@gnu.ac.kr.
将抗力运动与足够的蛋白质摄入量相结合,可显著提高久坐不动的成年人的肌肉力量和质量. 这种协同作用还可以增强脂肪代谢和关键代谢标记,改善整体体质.
科学领域:
- 运动生理学和体育营养 运动营养
- 代谢健康和身体组成
背景情况:
- 久坐不动的成年人经常经历肌肉质量,力量和代谢健康的下降.
- 抵抗运动 (RE) 和足够的蛋白质摄入量对这些参数的协同效应需要进一步澄清,特别是排除混因素.
研究的目的:
- 研究特定蛋白质摄入量 (1.5g/kg/天) 和RE对肌肉力量,身体组成和代谢标记物的联合影响.
- 为了阐明协同效应,控制过多的蛋白质摄入量或蛋白质循环受损.
主要方法:
- 一项为期4周的双盲随机对照试验,涉及34名久坐不动的成年人.
- 参与者被分配到安慰剂 (PLA-EX) 或乳清蛋白补充剂 (PRO-EX) 组,两者都接受了抵抗运动.
- 通过超声波评估身体组成,异动力学肌肉功能,休息代谢率,血液标记物和肝脂肪.
主要成果:
- 两组人都显著减少了体重,BMI和身体脂肪百分比.
- 在PRO-EX组,肌肉质量,肌肉强度和胰岛素类生长因子1 (IGF-1) 显著增加.
- 在PRO-EX组中,丸激素,高密度胆固醇和肝酶 (AST,ALT) 的水平也出现了有利的变化,脂肪代谢也得到改善.
结论:
- 抵抗运动和足够的蛋白质摄入量 (1.5克/千克/天) 的结合协同增强脂肪代谢,并在久坐不动的成年人中增加肌肉质量和力量.
- 这种营养和运动策略也对包括IGF-1在内的关键代谢标志物产生积极影响,这表明改善健康结果的综合方法.
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