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首页> 外文期刊>Gait & posture >Effects of virtual reality training on gait biomechanics of individuals post-stroke.
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Effects of virtual reality training on gait biomechanics of individuals post-stroke.

机译：虚拟现实训练对中风后个体步态生物力学的影响。

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OBJECTIVE: To evaluate gait biomechanics after training with a virtual reality (VR) system and to elucidate underlying mechanisms that contributed to the observed functional improvement in gait speed and distance. DESIGN: A single blind randomized control study. SETTING: Gait analysis laboratory in a rehabilitation hospital and the community. PARTICIPANTS: Fifteen men and three women with hemiparesis caused by stroke. INTERVENTIONS: Subjects trained on a six-degree of freedom force-feedback robot interfaced with a VR simulation. Subjects were randomized to either a VR group (n=9) or non-VR group (NVR, n=9). Training was performed three times a week for 4 weeks for approximately 1h each visit. MAIN OUTCOME MEASURES: Kinematic and kinetic gait parameters. RESULTS: Subjects in the VR group demonstrated a significantly larger increase in ankle power generation at push-off as a result of training (p=0.036). The VR group had greater change in ankle ROM post-training (19.5%) as compared to the NVR group (3.3%). Significant differences were found in knee ROM on the affected side during stance and swing, with greater change in the VR group. No significant changes were observed in kinematics or kinetics of the hip post-training. CONCLUSIONS: These findings are encouraging because they support the potential for recovery of force and power of the lower extremity for individuals with chronic hemiparesis. It is likely that the effects of training included improved motor control at the ankle, which enabled the cascade of changes that produced the functional improvements seen after training.
机译：目的：评估使用虚拟现实（VR）系统训练后的步态生物力学，并阐明有助于观察到的步态速度和距离功能改善的潜在机制。设计：一项单盲随机对照研究。地点：康复医院和社区的步态分析实验室。参加者：十五名男子和三名妇女中风引起的偏瘫。干预措施：受试者接受了六自由度力反馈机器人的训练，并与VR模拟进行了交互。将受试者随机分为VR组（n = 9）或非VR组（NVR，n = 9）。每周进行3次训练，共4周，每次访问约1小时。主要观察指标：运动和运动步态参数。结果：VR组的受试者表现出训练后踝关节力量产生的明显增加（p = 0.036）。与NVR组（3.3％）相比，VR组的踝部ROM训练后变化更大（19.5％）。在站立和挥杆过程中，患侧膝部ROM有显着差异，VR组的变化更大。训练后髋关节的运动学或动力学没有观察到显着变化。结论：这些发现令人鼓舞，因为它们支持慢性偏瘫患者下肢力量和力量恢复的潜力。训练的效果可能包括改善脚踝的运动控制，从而实现级联变化，从而产生训练后的功能改善。

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