School and Graduate Institute of Physical Therapy, College of Medicine, National Taiwan University, Taipei, Taiwan.
Phys Ther. 2011 Jun;91(6):862-74. doi: 10.2522/ptj.20100050. Epub 2011 Apr 7.
There is a lack of studies related to virtual reality (VR)-augmented balance training on postural control in people with Parkinson disease (PD).
The purposes of this study were: (1) to examine the effects of VR-augmented balance training on the sensory integration of postural control under varying attentional demands and (2) to compare the results with those of a conventional balance training (CB) group and an untrained control group.
A longitudinal, randomized controlled trial was used.
The intervention was conducted in the clinic, and the assessment was performed in a research laboratory.
Forty-two people with PD (Hoehn and Yahr stages II-III) were recruited.
The VR and CB groups received a 6-week balance training program.
The sensory organization tests (SOTs) of computerized posturography with single- and dual-task conditions were conducted prior to training, after training, and at follow-up. Equilibrium scores, sensory ratios, and verbal reaction times (VRTs) were recorded.
There were no significant differences in equilibrium scores or VRTs between the VR and CB groups. However, the equilibrium scores in SOT-6 (ie, unreliable vision and somatosensation) of the VR group increased significantly more than that of the control group after training. The equilibrium scores in SOT-5 (ie, unreliable somatosensation with eyes closed) of the CB group also increased significantly more than that of the control group after training.
The functional significance of the improvements in equilibrium scores in the SOTs was not known, and the sample size was small.
Both VR and CB training improved sensory integration for postural control in people with PD, especially when they were deprived of sensory redundancy. However, the attentional demand for postural control was not changed after either VR or CB training.
目前缺乏关于虚拟现实（VR）增强平衡训练对帕金森病（PD）患者姿势控制的感觉整合影响的研究。
本研究旨在：（1）检验 VR 增强平衡训练对不同注意力需求下姿势控制感觉整合的影响；（2）与常规平衡训练（CB）组和未经训练的对照组进行比较。
采用纵向随机对照试验。
干预在诊所进行，评估在研究实验室进行。
招募了 42 名 PD 患者（Hoehn 和 Yahr 分期 II-III）。
VR 和 CB 组接受 6 周的平衡训练计划。
在训练前、训练后和随访时进行计算机测姿的感觉组织测试（SOT），记录平衡评分、感觉比和言语反应时间（VRT）。
VR 和 CB 组之间的平衡评分或 VRT 无显著差异。然而，训练后 VR 组 SOT-6（即视觉和本体感觉不可靠）的平衡评分显著增加，高于对照组。训练后 CB 组 SOT-5（即闭眼时本体感觉不可靠）的平衡评分也显著高于对照组。
SOT 中平衡评分改善的功能意义尚不清楚，样本量较小。
VR 和 CB 训练均可改善 PD 患者的姿势控制感觉整合，尤其是在剥夺感觉冗余时。然而，无论是 VR 还是 CB 训练后，对姿势控制的注意力需求都没有改变。
