补充氨酸对年轻男性血管扩张和肌肉性能的影响:一项随机,双盲,交叉研究
Cezimar Correia Borges1, Weder Alves da Silva2, Alberto Souza de Sá Filho2
1Goiás State University-UEG, Anápolis, GO, Brazil.
International journal of sport nutrition and exercise metabolism
|November 17, 2025
概括
短期的L-氨酸 (ARG) 补充剂在上肢抵抗运动期间在健康的年轻男性中没有改善肌肉耐力或氧化 (NO) 水平. 从ARG摄入中没有观察到显著的人体效益.
科学领域:
- 运动科学 运动科学 运动科学
- 运动生理学 运动生理学
- 营养生物化学 营养生物化学
背景情况:
- 氨酸 (ARG) 是氧化 (NO) 的前体,是一种涉及肌肉功能的血管扩张剂.
- 之前关于ARG补充剂和运动表现的研究已经产生了不同的结果.
- 了解ARG对血管参数和肌肉性能的影响对于优化训练和营养策略至关重要.
研究的目的:
- 评估短期口服L-氨酸 (ARG) 补充对血管功能,氧化 (NO) 度和健康年轻男性在上肢抵抗运动期间肌肉性能的影响.
- 为了确定ARG补充是否提高肌肉耐力,NO产量或运动后血管反应.
主要方法:
- 一项随机,双盲,交叉研究,涉及16名休训练的男性.
- 参与者接受了ARG (3.2-9.6g/天) 或安慰剂4天,有14天的洗期.
- 运动方案涉及三组双腿卷曲到集中失效的 65% 的一次重复最大,与测量肌肉性能和血管参数.
主要成果:
- 在ARG和安慰剂组之间,在总重复次数,体积负载或疲劳比率方面没有发现显著差异.
- 血氧化 (NO) 水平在ARG和安慰剂条件之间没有显著差异.
- 在ARG运动后1分钟观察到臂动脉直径的短暂增加,但其他血管参数和血压保持不变.
结论:
- 在健康的年轻男性中,短期口服L-氨酸 (ARG) 补充似乎不会在上肢抵抗运动期间增强肌肉耐力或全身氧化 (NO) 度.
- 与ARG运动后观察到的臂动脉扩张的轻微,短暂的增加不足以赋予显著的人体效益.
- 可能需要进一步的研究来探索不同的剂量,持续时间或人群对潜在的ARG补充效果的研究.
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