Assessing balance through the use of a low-cost head-mounted display in older adults: a pilot study

被引:27
作者
Saldana, Santiago J. [1 ]
Marsh, Anthony P. [2 ]
Rejeski, W. Jack [2 ]
Haberl, Jack K. [2 ]
Wu, Peggy [3 ]
Rosenthal, Scott [4 ]
Ip, Edward H. [1 ]
机构
[1] Wake Forest Sch Med, Dept Biostat Sci, Med Ctr Blvd, Winston Salem, NC 27157 USA
[2] Wake Forest Univ, Dept Hlth & Exercise Sci, Winston Salem, NC 27109 USA
[3] Smart Informat Flow Technol, Res & Dev, Minneapolis, MN USA
[4] Wake Forest Sch Med, Winston Salem, NC 27157 USA
基金
美国国家卫生研究院;
关键词
virtual reality; balance; falls; elderly; RANDOMIZED CONTROLLED-TRIAL; VIRTUAL-REALITY; SIMULATOR SICKNESS; FALLS; SWAY; ENVIRONMENT; PREVENTION; INJURIES; MOBILITY; HUMANS;
D O I
10.2147/CIA.S141251
中图分类号
R592 [老年病学]; C [社会科学总论];
学科分类号
03 ; 0303 ; 100203 ;
摘要
Introduction: As the population ages, the prevention of falls is an increasingly important public health problem. Balance assessment forms an important component of fall-prevention programs for older adults. The recent development of cost-effective and highly responsive virtual reality (VR) systems means new methods of balance assessment are feasible in a clinical setting. This proof-of-concept study made use of the submillimeter tracking built into modern VR head-mounted displays (VRHMDs) to assess balance through the use of visual-vestibular conflict. The objective of this study was to evaluate the validity, acceptability, and reliability of using a VRHMD to assess balance in older adults. Materials and methods: Validity was assessed by comparing measurements from the VRHMD to measurements of postural sway from a force plate. Acceptability was assessed through the use of the Simulator Sickness Questionnaire pre-and postexposure to assess possible side effects of the visual-vestibular conflict. Reliability was assessed by measuring correlations between repeated measurements 1 week apart. Variables of possible importance that were found to be reliable (r >= 0.9) between tests separated by a week were then tested for differences compared to a control group. Assessment was performed as a cross-sectional single-site community center-based study in 13 older adults (>= 65 years old, 80.2 +/- 7.3 years old, 77% female, five at risk of falls, eight controls). The VR balance assessment consisted of four modules: a baseline module, a reaction module, a balance module, and a seated assessment. Results: There was a significant difference in the rate at which participants with a risk of falls changed their tilt in the anteroposterior direction compared to the control group. Participants with a risk of falls changed their tilt in the anteroposterior direction at 0.7 degrees/second vs 0.4 degrees/second for those without a history of falls. No significant differences were found between pre/postassessment for oculomotor score or total Simulator Sickness Questionnaire score. Both the force plate and the head-mounted display balance-assessment system were able to detect differences between conditions meant to mask visual and proprioceptive information. Conclusion: This VRHMD is both affordable and portable, causes minimal simulator sickness, and produces repeatable results that can be used to assess balance in older adults.
引用
收藏
页码:1363 / 1370
页数:8
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