Walking with head-mounted virtual and augmented reality devices: Effects on position control and gait biomechanics
Walking with head-mounted virtual and augmented reality devices: Effects on position control and gait biomechanics
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DOI：
10.1371/journal.pone.0225972
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发表时间：
2019-12-04
期刊：
影响因子：
3.7
通讯作者：
Cheung, Roy T. H.
中科院分区：
文献类型：
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作者：
Chan, Zoe Y. S.;MacPhail, Aislinn J. C.;Cheung, Roy T. H.
曾经是科幻幻想的虚拟现实（VR）技术已经发展并取得了长足的进步。与增强现实（AR）技术一起，这些替代环境的模拟已被纳入康复治疗中。头戴式显示器的引入，让VR/AR设备变得更加直观、紧凑，不再局限于上肢康复。然而，仍然有有限的证据支持在运动过程中使用VR和AR技术，特别是关于行走生物力学的安全性和有效性。因此，本研究的目的是通过步态分析来探讨这种技术的局限性。在这项研究中，13名参与者在正常，虚拟和增强版本的实验室环境中在跑步机上行走。一系列的时空参数和下肢关节角度进行了比较的条件。压力中心（CoP）椭圆面积（95%置信椭圆）在不同条件下存在显著差异（p = 0.002）。成对比较表明，与正常实验室条件相比，AR（p = 0.002）和VR（p = 0.005）条件下的CoP椭圆面积显著更大。此外，在步幅方面，有显著差异（p
What was once a science fiction fantasy, virtual reality (VR) technology has evolved and come a long way. Together with augmented reality (AR) technology, these simulations of an alternative environment have been incorporated into rehabilitation treatments. The introduction of head-mounted displays has made VR/AR devices more intuitive and compact, and no longer limited to upper-limb rehabilitation. However, there is still limited evidence supporting the use of VR and AR technology during locomotion, especially regarding the safety and efficacy relating to walking biomechanics. Therefore, the objective of this study is to explore the limitations of such technology through gait analysis. In this study, thirteen participants walked on a treadmill in normal, virtual and augmented versions of the laboratory environment. A series of spatiotemporal parameters and lower-limb joint angles were compared between conditions. The center of pressure (CoP) ellipse area (95% confidence ellipse) was significantly different between conditions (p = 0.002). Pairwise comparisons indicated a significantly greater CoP ellipse area for both the AR (p = 0.002) and VR (p = 0.005) conditions when compared to the normal laboratory condition. Furthermore, there was a significant difference in stride length (p