下肢关节力量的姿势诱导调节在乱的运行中
Soran AminiAghdam1,2, Christian Rode2,3
1Carnegie School of Sport, Leeds Beckett University, Leeds, United Kingdom.
PloS one
|May 14, 2024
概括
在跑步时改变体姿势可以显著地重新分配下肢关节的力量. 向前倾斜会增加正能量产生,而向后倾斜会影响负能量吸收,尤其是在下降阶段.
科学领域:
- 生物力学 生物力学
- 人类的机动运动
背景情况:
- 干部曲对跑步机械的影响已经确立,但它对乱跑步期间下肢关节能量的影响不太清楚.
- 了解干部姿势如何影响下肢能量转移对于优化跑步表现和预防伤害至关重要.
研究的目的:
- 为了研究不同的车倾斜 (向后,自选,低向前,高向前) 如何改变下肢关节的动力再分配在扰乱运行.
- 量化个体下肢关节 (部,膝盖,脚) 在平行和落步运行条件下对总正负力机械功率的贡献.
主要方法:
- 十二名跑步者在一个定制的跑道上进行了跑步试验,在不同的车体倾斜点 (0°到25°) 进行了下降步骤.
- 记录了三维动力学和动力学,并使用逆动力学分析来计算联合时刻和功率.
- 分析的重点是部,膝盖和脚关节的平均正负力力.
主要成果:
- 增加前方的干部倾斜率提高了下肢的总正功率,并减少了总负功率,并向近接关节转移.
- 关节表现出正能量产生增加,前方的干部倾斜,而膝关节显示出正能量和负能量贡献减少.
- 适应下降的步骤始终需要增加四肢总体的积极和消极力量,脚作为能量吸收和产生的主要位置.
结论:
- 干姿势显著调节下肢关节在乱运行时的动力分配,影响能量吸收和产生.
- 前方的干部倾斜促进了积极发电的近距离转变,而后方的倾斜影响了负能量吸收.
- 脚关节在落步跑时在管理机械功率方面发挥着至关重要的作用,不管体的姿势如何.
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