酸盐食补充剂和运动表现:对20篇已发表的系统性评论进行总体审查,并进行元分析
Eric Tsz-Chun Poon1, Jason Chun-Kit Iu2,3, Wesley Man-Kuk Sum2
1Department of Sports Science and Physical Education, The Chinese University of Hong Kong, Shatin, Hong Kong. eric.poon@cuhk.edu.hk.
饮食中酸盐补充剂在运动表现方面显示出混合的结果. 它改善了疲劳和肌肉耐力的时间,但效果因剂量和持续时间而异,许多评论中质量较低的证据.
科学领域:
- 运动生理学 运动生理学
- 营养科学 营养科学
- 运动医学 运动医学
背景情况:
- 饮食中酸盐 (NO3-) 补充剂正在被探索以提高运动表现.
- 之前的研究由于方法和结果的不同而提出了不一致的发现.
- 需要对酸盐对人体工程效应的证据进行全面的综合分析.
研究的目的:
- 综合有关酸盐食补充剂对11个运动表现领域影响的证据.
- 为了评估不同性能指标的ergogenic效应的一致性和规模.
- 确定影响酸盐补充剂疗效的因素.
主要方法:
- 按照PRISMA指南的总体审查方法.
- 系统地搜索七个数据库,直到2024年7月进行元分析.
- 包括安慰剂控制的系统性审查和元分析;使用AMSTAR-2评估质量.
主要成果:
- 包括20项系统性审查 (180项研究,2672名参与者) 在内.
- 酸盐补充改善了疲劳的时间 (SMD:0.33),总距离,肌肉耐力 (SMD:0.48),峰值功率输出 (PPO;SMD:0.25) 和PPO的时间 (SMD: -0.76).
- 较高剂量 (≥6 mmol/day) 和慢性补充剂 (>3天) 的益处更为明显;其他结果没有显著改善. 方法质量主要是低到非常低的.
结论:
- 酸盐食补充剂在特定的运动表现方面提供了人体效益的好处.
- 最佳效果与更高的剂量和更长的补充时间有关.
- 现有审查中的重大方法限制需要改进未来的研究和合成,以确保证据的可靠性.
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