虚拟高度,双重任务和训练对静态姿势稳定的影响
Sachini N K Kodithuwakku Arachchige1, Harish Chander2, Alireza Shojaei3
1Human Performance Laboratory, Department of Exercise and Nutrition Sciences, Weber State University, Dept 2805, 1435 Village Dr, Ogden, UT, 84408-5150, USA.
Applied ergonomics
|October 14, 2023
概括
虚拟现实模拟显示,更高的虚拟高度和双重任务 (DT) 显著损害了平衡. 然而,在这些虚拟环境中进行平衡训练可以提高姿势稳定性,并提供潜在的人体工程学应用.
科学领域:
- 人体工程学和人类因素
- 虚拟现实应用 虚拟现实应用
- 生物力学和运动控制
背景情况:
- 落在高空工作和复杂任务中是一个重大风险.
- 姿势稳定对于防止跌倒至关重要,特别是在具有挑战性的环境中.
- 虚拟现实 (VR) 为模拟高度等危险条件提供了一个安全的平台.
研究的目的:
- 研究虚拟高度和双重任务 (DT) 对静态姿势稳定的影响.
- 评估培训对模拟高空虚拟环境 (VE) 中姿势控制的影响.
- 评估VR作为平衡训练在人体工程学的潜在工具.
主要方法:
- 28名参与者在7个虚拟环境中完成了平衡评估 (地面到高空/边缘模拟).
- 在三天的单任务 (ST) 和双任务 (DT) 期间测量了平衡.
- A 7 (VE) x 3 (DAY) x 2 (TASK) 分数重复测量 ANOVA分析的姿势摇摆.
主要成果:
- 在更高的虚拟高度 (A3) 和边缘环境 (E1) 中观察到增加的姿势摇摆.
- 姿势稳定性在第一天下降,并在双重任务 (DT) 期间显著恶化.
- 三天的训练使静态姿势稳定性得到改善.
结论:
- 虚拟现实有效模拟高度挑战,影响姿势稳定性.
- 双重任务显著危及平衡,特别是在模拟的高风险环境中.
- 基于虚拟现实的平衡训练显示了在人体工程学环境中增强姿势控制的前景.
相关概念视频
00:49Rigid Body Equilibrium Problems - I
A rigid body is said to be in static equilibrium when the net force and the net torque acting on the system is equal to zero. To solve for rigid body equilibrium problems, do the following steps.
01:21Rigid Body Equilibrium Problems - II
A rigid body is in static equilibrium when the net force and the net torque acting on the system are equal to zero.
Consider two children sitting on a seesaw, which has negligible mass. The first child has a mass (m1) of 26 kg and sits at point A, which is 1.6 meters (r1) from the pivot point B; the second child has a mass (m2) of 32 kg and sits at point C. How far from the pivot point B should the second child sit (r2) to balance the seesaw?
Consider two children sitting on a seesaw, which has negligible mass. The first child has a mass (m1) of 26 kg and sits at point A, which is 1.6 meters (r1) from the pivot point B; the second child has a mass (m2) of 32 kg and sits at point C. How far from the pivot point B should the second child sit (r2) to balance the seesaw?