急性表现疲劳对篮球运动中骨应变的影响
Chenxi Yan1, Ryan J Bice2, Jeff W Frame2
1Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, IL, USA; Innovation Center for Medical Engineering & Engineering Medicine, Hangzhou International Innovation Institute, Beihang University, Hangzhou, China; Key Laboratory of Biomechanics and Mechanobiology, Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological and Medical Engineering, Beihang University, Beijing, China.
Bone
|February 1, 2025
概括
运动员的疲劳可能会降低骨压伤害的风险. 这项研究发现,运动引起的疲劳,在篮球运动中降低了骨应变,这表明有保护作用.
科学领域:
- 生物力学 生物力学
- 运动医学 运动医学
- 整形外科 整形外科 整形外科
背景情况:
- 骨压力损伤 (BSI) 在运动员中很常见,特别是在部.
- BSI的机制涉及重复加载和损坏积累.
- 运动期间疲劳对生物力学和骨应变的影响尚不清楚.
研究的目的:
- 为了研究急性疲劳对关节动力学,扭矩,地面反应力 (GRF) 和大学篮球运动员骨应变的影响.
- 为了确定疲劳是否影响运动运动期间骨压力损伤的风险.
主要方法:
- 对于10名大学篮球运动员,利用了参与者特定的有限元素 (FE) 和肌肉骨模型.
- 通过让参与者进行炼来诱导疲劳,直到垂直跳跃高度下降20%被观察到.
- 在跳跃,侧面切割和冲刺任务中分析了关节动力学,扭矩,GRF和骨应变.
主要成果:
- 疲劳在跳跃时降低了垂直地面反应力 (GRF) 并降低了部和膝盖的峰值延伸扭矩,以及脚脚下屈曲.
- 疲劳对跳跃期间骨应变的幅度和分布的影响很小.
- 在横向切割过程中发生了峰值应变时间的转变,在疲劳后的冲刺过程中观察到应变的减少.
结论:
- 这项研究成功地诱导了参与者的疲劳.
- 疲劳似乎减少了骨应变,可能会对骨压力损伤产生保护作用.
- 由于疲劳而减少的肌肉激活和力量产生可能解释了骨压力降低.
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