长和前:一个协同作用的关系
Jacob Fanous1, Charles L Rice2
1School of Kinesiology, Faculty of Health Sciences, The University of Western Ontario, London, ON, Canada.
概括
前 (TA) 肌肉在实现最佳脚曲方面发挥着至关重要的协同作用,与长 (FHL) 一起工作. 这种肌肉激活取决于任务,与个人特征无关.
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
- 发动机控制器的控制器
背景情况:
- 长 (FHL) 对于移动过程中的脚和脚功能至关重要,特别是对于和脚部曲.
- 最佳的形曲需要脚稳定,可能涉及诸如前脚 (TA) 这样的背 flexor 肌肉.
- 由于FHL的深层解剖位置,对其收缩驱动器的系统电肌图 (EMG) 评估是有限的.
研究的目的:
- 为了研究FHL和主要的背部柔器,前肢 (TA) 之间的关系.
- 为了量化TA肌肉激活在最大哈卢克斯曲任务期间.
主要方法:
- 利用内置EMG记录来自FHL,soleus和TA的肌肉活动.
- 十名参与者 (3名女性,7名男性,年龄23±1.4岁) 进行了异比最大自愿收缩 (MVC) 的和脚关节.
- 定制的动力计被用来测量曲,背部曲和脚部曲期间的力量.
主要成果:
- 在最大哈卢克斯曲过程中,TA EMG达到其最大的53% (±26.5),索莱斯活动最小 (4.7% ± 3.1).
- 在TA活性和力量,足部特征,性别,身高,体重或足底活动之间没有发现显著的相关性.
- 观测到的TA激活在最大哈卢克斯曲过程中超过了通常在行走过程中看到的水平.
结论:
- 前肢 (TA) 在最大半曲过程中表现出显著的协同活动,这对于最佳的脚曲至关重要.
- FHL和TA之间的关系依赖于任务,突出了TA在特定运动中的关键作用.
- 研究结果表明,TA在孤立的形曲中扮演的角色比以前从步态研究中理解的更为突出.
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