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咖啡因或二碳酸对抵抗运动表现没有人机效应:双盲交叉研究与基于性别的分析
Melissa L A Williams1, Catherine Mary Evelyn Barrett1, Ethan Lawson1
1School of Human Kinetics and Recreation, Memorial University of Newfoundland, St. John's, NL A1C 5S7, Canada.
咖啡因和碳酸并没有提高抵抗训练成人的力量耐力. 这项研究发现,对于任何一种增强性能的补充剂,胸部按压或膝盖延伸的重复都没有显著改善.
科学领域:
- 运动生理学 运动生理学
- 运动营养 运动营养
- 人类表现的人类表现.
背景情况:
- 咖啡因和碳酸是众所周知的人体工程学辅助剂.
- 它们对阻力运动表现,特别是力量耐力表现的影响需要进一步研究.
研究的目的:
- 为了比较咖啡因和二碳酸对胸部压力和膝盖伸展力量耐力的急性影响.
- 为了确定这些补充剂是否提高了抵抗训练的年轻成年人的表现.
主要方法:
- 随机,双盲,安慰剂控制,交叉设计.
- 十二名经过抵抗训练的成年人摄入咖啡因 (0.003g/kg),碳酸 (0.3g/kg) 或安慰剂.
- 参与者进行了六套胸部按压和膝盖延伸,每次1RM的70%左右.
主要成果:
- 对于膝盖延伸的重复,在各种条件中没有观察到显著的差异.
- 通过碳酸增加胸部压力重复的趋势被注意到,但没有达到统计学意义.
- 与碳酸和安慰剂相比,咖啡因显著增加了透静血压.
结论:
- 在这个人群中,咖啡因和二碳酸都没有对胸部按压或膝盖延伸的力量耐力表现出显著的急性人体效应.
- 个体反应,特别是在女性中,显示血液中乳糖水平较低,胸压重复次数较高.
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