步行稳定性和动力学变化 随着运动疲劳诱导的斜坡跑步机行走 跑步机行走
Pei-Chun Kao1,2, Colin Lomasney1,2
1Department of Physical Therapy and Kinesiology, University of Massachusetts Lowell, Lowell, MA 01854, USA.
Sensors (Basel, Switzerland)
|March 17, 2025
概括
局部疲劳比全身疲劳更大程度上影响着步行的稳定性和变化性. 了解这些差异对于身体活动期间的伤害预防策略至关重要.
科学领域:
- 生物力学 生物力学
- 人类运动科学科学 人类运动科学
- 运动医学 运动医学
背景情况:
- 检测运动疲劳对于预防身体活动中受伤和过度劳累至关重要.
- 以前关于疲劳指数的研究经常使用运动捕捉或可穿戴传感器,但疲劳诱导方法可以改变运动模式.
- 不同的疲劳诱导方法对步态动态的影响需要进一步研究.
研究的目的:
- 为了比较全身运动疲劳 (倾斜跑步机行走) 与局部腿部和脚疲劳对步态稳定性和可变性的影响.
- 为了分析不同疲劳协议后动态稳定边缘 (MOS),时空步态参数,动力变异性和局部动态稳定性 (LDEs) 的变化.
- 为了确定哪种疲劳诱导方法导致走路特征发生更大的变化.
主要方法:
- 20名健康的年轻人参与了这项研究.
- 在 (PRE) 之前和 (POST) 之后分析了1.25米/秒的步态,这两个不同的疲劳方案:全身和局部.
- 关键的步态参数包括动态稳定边缘 (MOS),时空测量,动态变化,以及干部运动的短期局部分歧指数 (LDEs),并使用POST-to-PRE比率计算和比较.
主要成果:
- 与全身疲劳相比,局部疲劳导致平均步幅显著增加,平均中侧MOS,膝关节角度变化,以及质量速度的中侧中心峰值.
- 全身疲劳导致前后干部运动的短期LDE值显著降低,表明局部动态稳定性得到改善.
- 该研究发现,局部疲劳对步态变化和稳定性指标的影响比全身疲劳更为明显.
结论:
- 用于诱导运动疲劳的方法显著影响着步态的稳定性和可变性.
- 与全身疲劳相比,局部疲劳似乎对步态变化和稳定性产生更大的不利影响.
- 这些发现强调了在评估步态变化和制定伤害预防策略时考虑特定的疲劳诱导方法的重要性.
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