不同的咖啡因剂量对最大体力表现和低消费女性运动员潜在副作用的影响:早上与晚上管理
Houda Bougrine1,2, Achraf Ammar3,4,5, Atef Salem2,3,4
1High Institute of Sport and Physical Education Gafsa, University of Gafsa, Gafsa 2100, Tunisia.
Nutrients
|July 27, 2024
概括
早晨摄入咖啡因可以提高运动表现,更高的剂量带来更大的好处. 晚上咖啡因不会提高表现,而且会增加女性运动员的副作用.
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:
- 咖啡因 (CAF) 是体育运动中广泛使用的人体育辅助剂.
- 对于CAF的最佳时间和剂量来提高运动表现仍在调查中.
- 关于白天时间 (TOD) 如何影响CAF对女运动员的影响,目前的研究有限.
研究的目的:
- 为了研究不同CAF剂量 (3mg/kg vs. 6mg/kg) 在不同的TODs (早上 vs. 晚上) 对女性运动员最大高强度体力表现的影响.
- 评估与不同CAF剂量和TODs相关的潜在副作用的感知.
主要方法:
- 这是一项双盲,随机,对抗平衡的研究,对15名低CAF消费的女性运动员进行.
- 六项试验涉及安慰剂,3毫克/公斤CAF和6毫克/公斤CAF在测试前60分钟内摄入.
- 性能测试包括反运动跳跃 (CMJ),修改敏捷性测试 (MATT) 和重复冲刺能力 (RSA),以及感知劳动力 (RPE) 评级和副作用问卷.
主要成果:
- 早晨摄入CAF (3 mg/kg和6 mg/kg) 改善了CMJ,MATT和RSA的性能,而6 mg/kg剂量显示出更大的增强.
- 晚上摄入CAF (两种剂量) 与安慰剂相比,对表现没有产生人体效应的影响.
- 没有观察到CAF剂量或TOD对RPE的显著影响;然而,随着CAF的晚上摄入,副作用显著增加,特别是6mg/kg.
结论:
- 咖啡因的人体效能效应取决于白天的时间和剂量.
- 早晨服用6毫克/千克的CAF剂量比3毫克/千克的剂量更有效地改善女性运动员的短期体力表现,而不会增加副作用.
- 晚上饮用咖啡因不会提高表现,而会增加副作用的风险.
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