姿势和视力:不同的观看目标距离如何影响健康人群的姿势稳定性和脚部压力参数
P De Blasiis1, A Fullin2, C I De Girolamo2
1Department of Health Sciences, University of Basilicata, 85100, Potenza, Italy.
Heliyon
|November 11, 2024
概括
看到遥远的目标会增加身体的摇摆,改变体重分布,影响姿势稳定性. 标准化视觉目标距离对于健康个体的准确稳定测量评估至关重要.
科学领域:
- 生物力学 生物力学
- 人体生理学 人体生理学
- 神经科学是一个神经科学.
背景情况:
- 姿势稳定依赖于姿势控制系统 (PCS),集成中枢神经系统结构和外周受体.
- 视觉是一个关键的外周受体,影响全身平衡和肌链对重力的调制.
- 之前关于近距离 (VNT) 与远距离 (VDT) 观看期间身体摇摆的研究缺乏足部适应体重分布的分析.
研究的目的:
- 为了研究观看目标距离对姿势稳定性变化的影响.
- 在不同的视觉条件下 (VNT与VDT) 分析脚部压力参数的变化.
- 评估视觉焦点如何影响身体重量分布和健康受试者的摇摆.
主要方法:
- 在20名健康的年轻成年人中,使用巴罗踏尺测量获得了31个稳定度和脚部压力参数.
- 试验对象进行双脚站立,同时观察近 (0.70米) 和远 (3米) 的目标.
- 分析了VDT和VNT条件之间的参数的变化和统计差异.
主要成果:
- 平面压力参数表现出最高的重复性,其次是压力中心 (CoP) 速度.
- 压力路径中心 (CoPsa) 和长度表面功能 (LSF) 的重复性最低.
- VDT显著增加了左脚负荷,左前脚压力,CoPsa和CoP速度,同时降低了LSF.
结论:
- 视距离的增加显著影响身体重量分布,并放大身体振荡.
- 视觉目标距离是准确解释姿势稳定性和脚部压力数据的关键因素.
- 在稳定测量检查期间标准化视觉目标距离对于可靠的结果至关重要.
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