腿筋的被动和主动剪切模块:常规静态拉伸和升温的影响
Ricardo Pimenta1, José P Correia2, João R Vaz3
1CIPER, Faculdade de Motricidade Humana, Universidade de Lisboa, Portugal; Research Center of the Polytechnic Institute of Maia (N2i), Maia Polytechnic Institute (IPMAIA), Portugal; Futebol Clube Famalicão - Futebol SAD, Department of Rehabilitation and Performance, Portugal.
Journal of science and medicine in sport
|March 6, 2024
概括
静态拉伸会以不同的方式影响腿筋肌肉,以肌肉特定的方式改变它们的剪切模量. 然而,标准的升温协议并没有显著改变腿筋剪切模量或力产生.
科学领域:
- 生物力学和运动生理学
- 肌肉生理学 肌肉生理学
背景情况:
- 了解不同物理干预对肌肉机械性能的急性影响,对于优化运动表现和预防伤害至关重要.
- 腿筋肌群包括多个肌肉,对伸展和升温等干预措施的反应可能是不同的.
研究的目的:
- 为了比较静态拉伸对个体腿筋肌肉主动和被动剪切模量的急性影响与标准预热协议.
- 为了研究腿筋群体对这些干预措施的肌肉特异反应.
主要方法:
- 肌肉剪切模量在休息状态和在亚最大同位数收缩期间 (20%的最大自愿同位数收缩 - MVIC) 测量.
- 在静态拉伸和标准预热协议之前和之后进行了测量.
- 分析了关键的腿筋肌肉,包括双腿骨短头 (BFsh) 和半膜体 (SM).
主要成果:
- 静态拉伸改变了肌肉间不一致的被动剪切模量模式,并在收缩过程中显著改变了活跃剪切模量,导致BFsh和SM之间的差异.
- 静态拉伸与MVIC下降18.3%有关.
- 一个标准的升温协议并没有显著改变被动剪模,虽然它显示了半类动物的活跃剪模的小幅下降,但这在测量误差范围内,并没有影响力产生 (1.4%的增加).
结论:
- 静态拉伸对被动和主动腿筋剪切模块的急性影响是肌肉特异性的.
- 一个标准的升温协议似乎对被动和活跃的腿筋剪切模块的影响微不足道,并且不会损害力量的产生.
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