含咖啡因的冰泥增强了1200kJ循环的时间试验在高温下的性能
Grant J Landers1, Shannon Ward1, Matthew Zimmermann1
1School of Human Sciences, University of Western Australia, Crawley, WA, Australia.
International journal of sport nutrition and exercise metabolism
|February 13, 2025
概括
咖啡因与冰泥混合,在炎热的条件下提高了骑自行车的表现. 这种以碳水化合物为基础的预冷策略提高了时间试验的完成速度,而不是单纯的泥.
科学领域:
- 运动生理学 运动生理学
- 运动营养 运动营养
- 环境的极端情况
背景情况:
- 运动员经常在炎热和潮湿的条件下面临性能下降.
- 预冷策略,如摄入冰泥,可以减轻热应激.
- 咖啡因是一种已知的人体工程学辅助剂,可以提高耐力表现.
研究的目的:
- 为了研究咖啡因与碳水化合物冰泥结合在热中对骑自行车计时试验 (CTT) 性能的影响.
- 为了比较仅含碳水化合物的冰泥与含咖啡因和碳水化合物的冰泥对生理和性能结果的影响.
主要方法:
- 九名男性骑自行车/三项运动员参加了一项单盲,平衡研究.
- 参与者在运动前30分钟内摄入了纯碳水化合物 (CON) 或碳水化合物-咖啡因 (CAF) 冰泥 (6.8g/kg冰,6%碳水化合物,3 mg/kg咖啡因用于CAF).
- 在受控的热湿环境 (33°C,60%RH) 中进行了1200kJ的自行车时间试验.
主要成果:
- 咖啡因和碳水化合物沉 (CAF) 导致与仅碳水化合物沉 (CON) 相比,CTT完成时间显著更快.
- 在CAF条件下观察到更快的分裂时间,从CTT的800 kJ到1200 kJ.
- 这两种情况同样降低了直肠温度,CAF和CON之间心率,血乳酸,感知劳动力或热感没有显著差异.
结论:
- 用含有咖啡因的碳水化合物冰泥进行预冷,可以在炎热的条件下提高骑自行车计时赛的性能.
- 将咖啡因添加到基于碳水化合物的冰泥中,为耐力运动员在炎热的情况下提供了超越碳水化合物的性能益处.
- 咖啡因增强的冰泥对于在温暖的环境中竞争的运动员来说是一种可行的人体工程学辅助.
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