Department of Kinesiology, California State University, Northridge, CA, USA.
Division of Biokinesiology and Physical Therapy, University of Southern California, Los Angeles, CA, USA.
Gait Posture. 2024 Jan;107:218-224. doi: 10.1016/j.gaitpost.2023.10.008. Epub 2023 Oct 6.
Through providing on-demand visual and auditory cues while walking,augmented reality (AR) can theoretically cue spatiotemporal gait adaptations in, populations such as those with Parkinson's disease. However, given the novelty of the, technology, the type and extent of gait adaptations in response to such a cueing, system are unknown. Before such systems can be incorporated into rehabilitation, approaches, it is important to understand how people interact with the technology.
What are the effects of visual and auditory cues delivered, through AR on spatiotemporal walking patterns and variability in a healthy, young, population? Is there a relationship between system usability and gait variability?
, METHODS: Twenty healthy, young participants walked in four different cueing conditions using an AR headset: No Cues (NC) (i.e., natural gait), Auditory (A), Visual (V), and Auditory + Visual (AV). Inertial measurement units recorded spatiotemporal gait data at 200 Hz, a System Usability Survey was administered afterward, and linear regression models were developed to examine whether gait variability is predictive of system usability.
All cueing conditions exhibited a significantly slower cadence compared to, NC trials. Cadence variability was significantly higher for A trials compared to V and, NC. V trials exhibited significantly decreased stride lengths compared to NC. Increased, reported system usability was significantly correlated with decreased stance phase, time variability across A trials.
Our findings support that holographic spatial-visual and auditory cues, are promising to evoke spatiotemporal gait adaptations. Results also support the, notion that the type of system and cue delivery design may impact gait outcomes.,Before an AR cueing system can be applied to a specific population in future, interventions, a more holistic approach towards finding the relationship between this, technology and its users is needed.
通过在行走时提供按需的视觉和听觉提示，增强现实 (AR) 理论上可以提示帕金森病等人群的时空步态适应。然而，鉴于该技术的新颖性，尚不清楚针对此类提示系统会出现何种类型和程度的步态适应。在将此类系统纳入康复方法之前，了解人们如何与该技术交互非常重要。
通过 AR 提供的视觉和听觉提示会对健康年轻人群的时空行走模式和变异性产生什么影响？系统可用性和步态变异性之间是否存在关系？
二十名健康的年轻参与者在四种不同的提示条件下使用 AR 耳机行走：无提示 (NC)（即自然步态）、听觉 (A)、视觉 (V) 和听觉+视觉 (AV)。惯性测量单元以 200 Hz 的频率记录时空步态数据，之后进行系统可用性调查，并建立线性回归模型以检验步态变异性是否可预测系统可用性。
与 NC 试验相比，所有提示条件下的步频均明显减慢。与 V 和 NC 相比，A 试验的步频变异性明显更高。V 试验的步长明显短于 NC。报告的系统可用性增加与 A 试验中站立相时间变异性降低显著相关。
我们的研究结果支持全息空间视觉和听觉提示具有唤起时空步态适应的潜力。结果还支持以下观点，即系统类型和提示传递设计可能会影响步态结果。在未来的干预措施中，将 AR 提示系统应用于特定人群之前，需要采用更全面的方法来寻找该技术与其用户之间的关系。
