全身振动频率对肌肉拉伸状态在渐变的足部 flexor 同位数收缩期间的影响
Pornpimol Muanjai1,2, Chris Haas3, Wolfram Sies4
1Department of Physical Therapy, Allied Health Sciences Faculty, Burapha University, Chonburi, Thailand.
Journal of exercise science and fitness
|November 15, 2023
概括
全身振动 (WBV) 在24 Hz时增加了静止的中部胃角肌肉的肌肉硬度. 这项研究表明,剪波速度 (SWS) 可以评估震动暴露后肌肉度的急性变化.
科学领域:
- 生物力学 生物力学
- 生理学 生理学 生理学
- 运动科学 运动科学 运动科学
背景情况:
- 全身振动 (WBV) 可以诱导急性生理和生物力学变化.
- 肌肉硬与WBV有关,但需要进一步调查.
- 这项研究的重点是量化WBV暴露后肌肉度变化.
研究的目的:
- 为了研究不同频率的单次WBV对活跃的足部 flexor肌肉性的影响.
- 为了确定WBV是否影响肌肉结构和电活动.
- 评估机械振动频率与肌肉度变化之间的关系.
主要方法:
- 十三名健康成年人接受了5分钟的WBV会话,频率为6,12,24和0Hz (对照组).
- 在横向和纵向平面的剪切波速度 (SWS),肌肉结构和电活动在脚部曲过程中被测量在中间胃角 (MG) 和底部 (SOL).
- 对感知到的肌肉性的主观评分是使用利克尔特尺度收集的.
主要成果:
- 在24 Hz WBV (p=0.025) 观察到静止时MG SWS显著增加.
- 在纵向视图 (p=0.005) 中,在收缩期间SOL SWS略有下降.
- 主观度在12 Hz WBV后增加,而在收缩期间的24 Hz WBV后,MG笔角下降 (p=0.011).
结论:
- 观察到的肌肉度变化主要与纵向投影中的24 Hz WBV有关.
- 结果表明潜在的机制,如激活后的强化和升温效应.
- 剪波速度 (SWS) 显示出作为评估WBV后急性肌肉度修改工具的承诺.
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