在具有定向虚拟接触时间的二维合规表面上表征姿势平衡
Vu Phan1, Soe Lin Paing1, Hyunglae Lee1
1School for Engineering of Matter, Transport and Energy, Arizona State University, Tempe, AZ 85287, USA.
Human movement science
|August 2, 2023
概括
在符合2D标准的表面上,姿势平衡控制受损,尤其是在没有视力的情况下. 定向虚拟接触时间 (d-VTC) 措施有效地识别了减少的平衡能力,帮助预防跌倒的战略.
科学领域:
- 生物力学 生物力学
- 人类运动控制器
- 机器人技术 机器人技术 机器人技术
背景情况:
- 姿势平衡对于日常活动至关重要.
- 符合要求的表面挑战平衡控制.
- 需要新的方法来评估平衡.
研究的目的:
- 使用定向虚拟接触时间 (d-VTC) 在符合2D标准的表面上研究姿势平衡.
- 将d-VTC与传统的平衡措施 (COP面积,RMS) 进行比较.
主要方法:
- 使用双轴机器人平台来模拟符合要求的表面.
- 评估了20名健康的成年人,他们的眼睛是打开/关闭的.
- 使用d-VTC (VTC平均值,边界接触 - BC,切换速率 - SR) 和压力中心 (COP) 度量来测量平衡.
- 分析数据使用双向重复测量ANOVA.
主要成果:
- 增加表面合规性和视力缺失显著降低了VTC平均值.
- 表面符合性和视力之间的相互作用效应对于VTC平均值是显著的.
- BC值显示趋向于50%的收.
- 在表面和视觉变化下,COP面积显著增加.
- 随着表面的符合性,SR显著下降.
结论:
- 符合2D标准的表面会损害平衡,尤其是在没有视觉的情况下.
- d-VTC指标,特别是VTC平均值,对平衡赤字非常敏感.
- BC和SR提供了对跌倒风险和平衡控制的新见解.
- 结果支持开发康复和防摔辅助设备.
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