准备着陆:腿筋预激活在女性中更高,并且因疲劳而受阻
David Alan Phillips1,2, Bridgette Rae Buckalew2, Bridget Keough2
1Program in Kinesiology, College of Public Health and Human Sciences, Oregon State University-Cascades, Bend, OR,USA.
Journal of applied biomechanics
|July 25, 2023
概括
女运动员在降落前显示出更大的腿筋激活,但疲劳会减少这两种性别. 这种因疲劳引起的减轻可能会增加前十字带损伤的风险.
科学领域:
- 生物力学 生物力学
- 神经肌肉生理学 神经肌肉生理学
- 运动医学 运动医学
背景情况:
- 腿筋肌肉对于稳定膝盖和减少前十字带 (ACL) 负荷至关重要.
- 在降落过程中经常发生ACL损伤,这凸显了降落前肌肉激活的重要性.
- 了解基于性别的差异和疲劳对腿筋预激活的影响对于伤害预防策略至关重要.
研究的目的:
- 为了研究着陆前腿筋肌肉激活的性别相关差异.
- 为了检查下肢疲劳对这种预激活的影响.
- 将这些发现与着陆生物力学和受伤风险因素相关联.
主要方法:
- 24名健康的参与者 (13名男性,11名女性) 接受了一项垂直跳跃协议.
- 使用特定的协议诱导下半身疲劳.
- 腿筋电肌图 (EMG),地面反应力和着陆误差得分在疲劳之前和之后被测量.
主要成果:
- 与男性相比,女性在降落前的腿筋EMG振幅显著更高,无论是在疲劳之前还是之后.
- 疲劳导致腿筋EMG幅度在两种性别显著下降.
- 在垂直地面反应力,加载速度或着陆错误评分系统中,性别或条件之间没有发现显著差异.
结论:
- 尽管着陆性能相似,但雄性和雌性使用不同的腿筋神经肌肉协调策略.
- 在疲劳后观察到的腿筋预激活的减少可能会增加前十字带损伤的风险.
- 性别特定的神经肌肉对疲劳的反应需要在ACL伤害预防的背景下进行进一步的研究.
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