咖啡因补充剂对CrossFit表现,反应时间和姿势稳定性的剂量依赖影响 - 一个随机的安慰剂控制的交叉试验
Natalia Główka1, Jakub Malik2, Tomasz Podgórski3
1Department of Sports Dietetics, Poznań University of Physical Education, Poznań, Poland.
咖啡因补充剂 (6 mg/kg) 显示了临床相关的CrossFit表现和反应时间的改善,尽管在统计学上并不显著. 这一剂量似乎是高强度功能训练中咖啡因使用者的最佳剂量.
科学领域:
- 运动生理学 运动生理学
- 营养科学 营养科学
- 体育表现 体育表现 体育表现
背景情况:
- 咖啡因可以提高各种领域的运动表现.
- 咖啡因对CrossFit/高强度功能训练 (HIFT) 性能和认知功能的剂量依赖性影响需要进一步研究.
研究的目的:
- 评估三种不同的咖啡因剂量 (3,6,9毫克/体重千克) 和安慰剂对CrossFit特异性表现,反应时间,姿势稳定性,心率和感知力的影响.
主要方法:
- 一项随机,双盲,安慰剂控制的交叉研究,涉及26名经过中等训练的CrossFit从业者.
- 使用Fight Gone Bad (FGB) 测试来评估表现,并测量反应时间,姿势稳定性,心率和感知到的劳动力.
- 分析了CYP1A2和ADORA2A中的遗传多态性,以确定它们对咖啡因影响的影响.
主要成果:
- 服用6mg/kg咖啡因的补充剂在FGB总得分,反应时间和运动前运动时间方面显示出临床上明显的改善.
- 在任何咖啡因剂量和安慰剂之间,对于FGB总量,心率,感知劳动,反应时间或姿势稳定性没有发现统计学上显著的差异.
- 与安慰剂相比,在所有咖啡因剂量中,乳酸盐度在运动前和运动后都显著更高.
结论:
- 咖啡因补充剂对特定表现,反应时间,姿势稳定性,感知劳动力和心率的剂量依赖性影响在统计学上是无意义的,但在临床上是相关的.
- 建议6mg/kg咖啡因的剂量是CrossFit/HIFT中性能提升的最实用的策略.
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