衰老对交叉步行期间头部控制和关节运动之间的关系的影响
Yahiko Takeuchi1, Kimiya Fujio2
1Department of Physical Therapy, Josai International University, Chiba, Japan.
PloS one
|May 24, 2024
概括
年长的成年人表现出更大的头部不稳定性和减少头部直直的反应在横向步进. 这表明,增加部肌肉度可能会减缓步伐速度,影响防摔策略.
科学领域:
- 生物力学 生物力学
- 老年学是指老年学的学科.
- 神经科学是一个神经科学.
背景情况:
- 跌倒对老年人来说是一个重要的健康问题,而步骤反应对于保持平衡至关重要.
- 了解横向踏步的生物力学对于开发有效的防摔策略至关重要.
研究的目的:
- 与年轻人相比,研究老年人侧向踏步的特征.
- 为了分析关节动力学和头部稳定性在交叉步骤后机械干扰.
- 为了检查部关节时刻和部关节角速度在踏步时之间的关系.
主要方法:
- 11名健康的老年人和13名年轻的成年人参加.
- 一个干扰加载装置诱导了横向交叉步骤.
- 运动捕捉和力板记录了动力学和动力学数据.
- 头部稳定性通过横向移位,部关节动力学和部关节时刻来量化.
主要成果:
- 与年轻人相比,老年人表现出明显更大的横向头部摆动.
- 老年人的头角移位和步行时的角速度显著较低.
- 在两组中,部横向曲时刻和部曲角速度之间发现了负相关性.
- 只有在老年人中观察到部横向曲时刻和部引角速度之间的显著负相关性.
结论:
- 老年人表现出增加的头部不稳定性和减少的头部正反应在横向交叉步行.
- 观察到的相关性表明,增加部肌肉度可能会降低老年人的步伐速度,可能是由于前脊柱反射的影响.
- 这些发现突出了步行时姿势控制策略的与年龄相关的变化,这与预防跌倒研究有关.
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