双重任务增加了ACL损伤的动力学和动力学风险因素
Shekoofe Saadat1, Katherine M Bricarell1, Jason C Gillette1
1Department of Kinesiology, Iowa State University, Ames, IA, USA.
Sports biomechanics
|October 26, 2023
概括
团队运动中的注意力分裂通过改变着陆机制影响前十字带 (ACL) 损伤风险. 双重任务增加了立场时间,改变了膝盖和地面反应力,表明了潜在的伤害影响.
科学领域:
- 生物力学 生物力学
- 运动医学 运动医学
- 发动机控制器的控制器
背景情况:
- 前十字带 (ACL) 损伤在团队运动中很普遍.
- 分断注意力对运动员着陆生物力学的影响尚不清楚.
研究的目的:
- 为了研究在反应性跳跃任务中分散注意力对着陆机械的影响.
主要方法:
- 21名女运动员进行了单任务和双任务跳跃,视觉线索指示跳跃方向.
- 弗兰克范式被用来操纵注意力负载 (一致与不一致的刺激).
- 测量着陆生物力学 (膝盖角度,时刻,地面反应力) 和性能 (姿势时间).
主要成果:
- 与双重任务条件相比,基线跳跃显示出不同的膝盖曲和地面反应力.
- 不一致的刺激在左跳时增加了后部地面反应力和立场时间的峰值.
- 双重任务通常会增加立场时间,表明性能受损.
结论:
- 分断的注意力显著改变着陆生物力学和性能在一个反应性跳跃任务.
- 这些变化可能会增加前十字带 (ACL) 在动态团队运动中受伤的风险.
- 需要对复杂刺激进行进一步的研究,以模拟现实世界的体育场景.
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