摄入咖啡因对骑自行车的人计时赛表现的影响:系统性审查和元分析
Bin Chen1, Li Ding2, Qiyang Qin3
1Fujian Agriculture and Forestry University, Department of Public Physical Education, Fuzhou, China.
概括
适度的咖啡因摄入量 (4-6mg/kg) 显著提高了骑自行车计时赛的表现. 较低剂量 (1-3mg/kg) 并没有显著改善循环表现,这表明人体效应的最佳剂量范围.
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:
- 咖啡因是耐力表现的成熟人体工程学辅助剂.
- 缺乏对咖啡因对骑自行车计时赛 (TT) 表现的影响的系统评估.
研究的目的:
- 对摄入咖啡因对骑自行车TT表现的有效性进行元分析.
- 确定最佳的咖啡因剂量,以最大限度地提高骑自行车运动员的表现.
主要方法:
- 在2023年12月之前,对四个数据库进行了系统搜索.
- 包括的研究是安慰剂控制的,交叉试验评估咖啡因对骑自行车TT的影响.
- 性能通过完成时间和平均功率输出 (MPO) 进行测量,并通过随机效应元分析进行分析.
主要成果:
- 十五项研究符合纳入标准.
- 适度的咖啡因剂量 (4-6mg/kg) 显著改善了骑自行车的表现 (SMD时间: -0.55,SMD MPO: 0.44).
- 低剂量的咖啡因 (1-3mg/kg) 并没有显著改善性能 (SMD时间: -0.34,SMDMPO:0.31).
结论:
- 适度的咖啡因剂量 (4-6mg/kg) 是提高骑自行车TT表现的最佳选择.
- 在这种中等剂量下,完成时间和MPO的改善是可比的.
- 低剂量咖啡因对骑自行车TT的表现没有显著的 ergogenic 益处.
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