咖啡因作为人体工程学辅助剂在多个自行车时间试验中的有效性
Ítalo Vinícius1,2, Cayque Brietzke1,3, Paulo Franco-Alvarenga1,3
1Exercise Psychophysiology Research Group, School of Arts, Sciences and Humanities, University of São Paulo, São Paulo, Brazil.
European journal of applied physiology
|December 14, 2024
概括
补充咖啡因可以在多次时间试验中改善骑自行车的表现,但个体反应有很大差异. 仅仅依靠群体数据可能会误解咖啡因在耐力运动中的个人有效性.
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:
- 咖啡因的人体效应已经在单个循环时间试验中得到证实.
- 在多次,同一天或跨日骑自行车时间试验中,咖啡因有效性的证据有限.
研究的目的:
- 为了研究咖啡因 (5毫克/公斤) 对多次4公里自行车时间试验 (TT4km) 的影响.
- 评估日内和跨日的绩效提升,考虑到个体的变化.
主要方法:
- 13名训练有素的骑自行车者参与了一项双盲,安慰剂对照的研究.
- 骑自行车的人在摄入咖啡因或安慰剂后完成了基线和补充TT4km试验.
- 个人对咖啡因的反应相对于标准测量误差 (SEM) 进行了分类.
主要成果:
- 咖啡因在第一个补充的TT4km中提高了性能 (CAF-1:0.5%,CAF-2:1.8%),CAF-2显示出统计学意义 (p<0.001).
- 组数据表明咖啡因对表现的影响具有良好的可靠性.
- 个体分析显示,试验之间在几天内响应性分类 (38%和31%) 发生了显著的转变.
结论:
- 咖啡因在单次TT4km试验中在几天内和几天内都显示出可靠的性能提升.
- 响应的个体变化挑战了对咖啡因补充策略的依赖分组数据的依赖.
- 个性化评估对于优化骑自行车表现中的咖啡因使用至关重要.
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