沉浸式虚拟现实系统辅助前庭功能康复的应用

Evaluation of the effectiveness of immersive virtual reality-based exercise system for vestibular rehabilitation

目的:探讨虚拟现实(VR)技术辅助前庭康复训练(VRT)治疗慢性前庭功能低下的作用和价值。方法:按机械抽样方法将98例慢性前庭功能低下患者分为实验组(VR组)73例和控制组25例,VR组采取沉浸式VR辅助VRT方法治疗,控制组采取常规VRT治疗。治疗前和治疗后第12周,采用汉化眩晕症状量表(VSS-C)进行评分,评估患者治疗前后眩晕症状变化。平衡功能评估采用平衡仪测定人体中心压力(COP)、最大摆动长度(MOL)及COP摆动包络面积(EA)数据,数字越小表示平衡能力越好。采用SPSS 20.0统计软件进行数据分析。结果:①VR组治疗后12周较治疗前VSS-C量表总分、平衡相关得分差异有统计学意义(P<0.01)。治疗后2组VSS-C量表总分(P<0.01)、平衡相关得分(P<0.05)差异有统计学意义。②平衡仪COP测定,2种训练方法治疗12周前后,MOL、EA睁眼状态下差异均有统计学意义(P<0.01)。结论:VRT引入VR技术能够在训练中为患者提供有趣的互动,鼓励患者更积极主动地参与康复锻炼,达到良好效果。VR技术在患者无视力障碍的前提下对主观平衡康复的疗效优于常规VRT训练方法。

Objective:To evaluate the efficacy of virtual reality technology assisted vestibular rehabilitation training(VRT)in treating chronic vestibular dysfunction patients.Method:Ninety-eight vestibular dysfunction patients were assigned into the experimental group(n=73)and the control group(n=25)using mechanical sampling.The experimental group received immersive virtual reality assisted VRT treatment,while the control group received conventional VRT treatment.Chinese vertigo symptom scale(VSS-C)was used to measure vertigo symptoms before treatment and 12 weeks post-treatment.Balance feedback instrument was used to measure the center of pressure(COP),maximum oscillation length(MOL)and COP envelope area(EA)which smaller numbers indicating better balance functions.Analysis of variance and Fisher’s exact test were performed using SPSS 20.0 software to compare mean values and frequencies,respectively.Result:①Before treatment as baseline,there were no statistically significant differences in the total score of VSS-C scale,balance correlation and anxiety correlation score between the two groups.Total score and balance related score of experimental group were significantly different between before and after treatment(P<0.01),while no statistically significant difference in anxiety related scores.After treatment,there were statistically significant differences in total VSS-C score(P<0.01)and balance correlation score(P<0.05)between the two groups,while no statistically significant difference in anxiety correlation score.②After 12 weeks of treatment,there were statistically significant differences between MOL and EA in open-eye state(P<0.01),but no statistically significant difference in close-eye state between two groups.Conclusion:The introduction of VR technology by VRT can provide interesting interactions for patients in training and encourage patients to actively participate in various repetitive rehabilitation exercises that are boring,achieving good effect.The effect of VR on subjective balance rehabilitation without visual impairment is better than that of conventional.