多成分预训练补充剂对在异动力疲劳协议期间峰值扭矩和肌肉刺激的急性影响
Benjamin R Connors1, Clayton L Camic1, Andrew R Jagim2
1Department of Kinesiology and Physical Education, Northern Illinois University, DeKalb, IL 60115, USA.
Sports (Basel, Switzerland)
|November 26, 2025
概括
这项研究发现,多成分预训练补充剂 (MIPS) 改善了腿部延伸器的同位度和集中度峰值扭矩. 然而,它没有影响特异扭矩或肌肉激活信号.
科学领域:
- 运动生理学 运动生理学
- 运动营养 运动营养
- 生物机械分析 生物机械分析
背景情况:
- 运动前补充剂在运动员中很受欢迎,以提高表现.
- 了解多成分运动前补充剂 (MIPS) 的急性生理影响对于优化训练和表现至关重要.
- 腿部延伸器的强度和耐疲劳性是许多运动活动的关键决定因素.
研究的目的:
- 为了研究MIPS对腿伸缩器峰值扭矩 (同度,同心,偏心) 和电肌图 (EMG) 活动的直接影响.
- 为了评估MIPS在疲劳性异动运动运动协议期间的影响.
- 为了确定MIPS诱导的扭矩变化是否与肌肉激活的变化有关.
主要方法:
- 一个双盲,安慰剂控制的交叉设计与13名男性参与者被采用.
- 试验对象在执行疲劳性异动力学协议之前服用MIPS或安慰剂,该协议涉及30个最大肌肉动作.
- 测量了同度,同心和偏心的峰值扭矩,以及来自大侧肌,大腿直肠和大中间肌的EMG信号.
主要成果:
- 与安慰剂组相比,MIPS组表现出明显更大的等比和同心的峰值扭矩.
- 在MIPS和安慰剂条件之间,没有观察到异常峰值扭矩的显著差异.
- 电肌图谱的振幅和频率没有显示出对MIPS摄入的反应有显著变化.
结论:
- 急性MIPS消耗可以增强腿部延伸器的等比和集中峰值扭矩.
- 观察到的扭矩改善并不能归因于EMG振幅或频率的变化.
- MIPS可能是一个可行的人体工程学辅助器,用于需要在同度和同心模式下产生最大力度的活动.
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