Influence of virtual reality on postural stability during movements of quiet stance
Influence of virtual reality on postural stability during movements of quiet stance
复制标题
DOI：
10.1016/j.neulet.2008.12.057
复制
发表时间：
2009-02-27
影响因子：
2.5
通讯作者：
Allum, John H. J.
中科院分区：
文献类型：
--
作者：
Horlings, Corinne G. C.;Carpenter, Mark G.;Allum, John H. J.
文献中提到了虚拟现实（VR）期间的平衡问题，但很少调查，尽管越来越多地使用VR系统作为训练或康复工具。我们考察了VR在不同姿态条件下对身体摇摆的影响。方法：17名年轻受试者在三种视觉条件下完成四项任务（双脚并拢站立或在坚硬和泡沫表面上站立60秒）：睁开眼睛不使用VR，闭上眼睛，或观看随着身体运动而移动的虚拟现实场景。安装在肩膀上的角速度传感器提供了身体在横摇和俯仰平面上的摆动测量。结果：与EO相比，VR使俯仰角、俯仰角和角速度增加。在大多数情况下，虚拟现实的效果与闭上眼睛的情况难以区分。与闭上眼睛和VR条件下的坚固表面相比，使用泡沫表面增加了摆动。结论：在静姿运动过程中，VR引起的体位摇摆幅度增加与闭眼引起的幅度相似。这种增加的摇摆与站姿表面无关，但在泡沫上最大。2009爱思唯尔爱尔兰有限公司版权所有。
Introduction: Balance problems during virtual reality (VR) have been mentioned in the literature but seldom investigated despite the increased use of VR systems as a training or rehabilitation tool. We examined the influence of VR on body sway tinder different stance conditions. Methods: Seventeen young subjects performed four tasks (standing with feet close together or tandem stance on firm and foam surfaces for 60s) under three visual conditions: eyes open without VR, eyes closed, or while viewing a virtual reality scene which moved with body movements. Angular velocity transducers mounted on the shoulder provided measures of body sway in the roll and pitch plane. Results: VR caused increased pitch and roll angles and angular velocities compared to EO. The effects of VR were, for the most part, indistinguishable from eyes closed conditions. Use of a foam surface increased sway compared to a firm surface undereyes closed and VR conditions. Conclusion: During the movements of quiet stance, VR causes an increase in postural sway in amplitude similar to that caused by closing the eyes. This increased sway was present irrespective of stance surface, but was greatest on foam. (C) 2009 Elsevier Ireland Ltd. All rights reserved.