咖啡因对训练有素自行车手模拟比赛后耐久性的影响:基于现场的交叉随机对照试验
Lidia B Alejo1, Iván R Sánchez-Redondo1, Carlos Revuelta1,2
1Department of Sports Sciences, Faculty of Medicine, Health and Sports, Universidad Europea de Madrid, Madrid, Spain.
International journal of sport nutrition and exercise metabolism
|November 17, 2025
概括
在长时间骑自行车时摄入咖啡因可能有助于初级自行车手在随后的计时赛中保持表现. 这项研究表明,咖啡因可以减轻性能下降,尽管需要更多的研究来证实其对安慰剂的好处.
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
- 营养科学 营养科学
背景情况:
- 众所周知,运动前摄入咖啡因可以提高骑自行车的表现.
- 长时间炼期间摄入咖啡因对后续表现的影响仍在争论中.
- 对于运动员来说,了解咖啡因在长时间的自行车比赛中具有人体效应的潜力至关重要.
研究的目的:
- 调查长时间骑自行车时摄入咖啡因对训练有素的初级自行车手的计时赛表现的影响.
- 为了确定运动中期的咖啡因摄入量是否可以防止性能下降.
- 为了比较咖啡因与安慰剂在模拟比赛条件下给予咖啡因的结果.
主要方法:
- 三重失明,随机,安慰剂控制的交叉设计.
- 13名初级自行车手完成了一场模拟自行车比赛,随后进行了为期8分钟的计时赛.
- 咖啡因 (6毫克/公斤) 或安慰剂在计时试验前60分钟服用.
主要成果:
- 与新鲜条件相比,使用安慰剂观察到功率输出显著下降.
- 在模拟比赛期间摄入咖啡因并没有导致随后的计时赛的表现显著下降.
- 虽然咖啡因在统计学上没有显著意义,但与安慰剂相比,咖啡因显示出适度的性能益处 (3.1%),超过了最小值得改变.
结论:
- 在长时间骑自行车时摄入高剂量的咖啡因可能会部分缓解初级骑自行车者的性能损害.
- 需要进一步的研究来确定与安慰剂相比,运动中期咖啡因的人体效能效应.
- 咖啡因在维持耐力表现方面的作用需要在运动群体中继续进行研究.
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