시각적 피드백 훈련이 뇌졸중 환자의 균형과 시지각력에 미치는 효과
The Effects of Visual Feedback Training on Balance and VisualPerception in Stroke Patients
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연구배경 : 뇌졸중 환자에게 균형과 시지각력의 소실은 일상생활에 심각한 장애를 가져온다. 이러한 문제를 해결하기 위해 많은 치료적 중재 방법이 사용되고 있다. 그동안 시지각 피드백 훈련은 균형 향상에 관한 연구에 많이 이용되어졌지만 시지각 기능과 관련된 연구는 부족한 실정이다. 따라서 본 연구에서는 시각적 피드백 훈련 후 균형 및 시지각 기능에 미치는 영향을 알아보고자 실시되었다. 방 법 : 본 연구는 전후 통제 집단 설계 연구로서 S 병원에 내원한 28명을 뇌졸중 환자를 대상으로 하였다. 대상자는 연구 목적과 내용을 이해하고 자발적인 실험 참여에 동의한 자로 연구 기준에 부합하는 환자를 대상으로 하였다. 실험군과 대조군은 무작위로 분류하였다. 대조군은 8주 동안 주 5회 40분씩 고전적 재활치료를 하였으며 실험군은 8주 동안 주 2회 40분씩 고전적 재활치료와 주 3회 40분씩 시각적 피드백 훈련을 병행하여 실시하였다. 실험 전후에 동적 균형, 정적 균형과 시지각 기능을 측정하였다. 결 과 : 집단 내 비교에서 실험군은 동적 균형과 정적 균형, 시지각 검사의 전후 비교에서 유의한 향상이 있었고(p<.05), 집단 간 비교에서 실험군은 대조군에 비해 동적 균형의 거리, 정적 균형의 Y-speed, 시지각 검사에서 유의한 향상이 있었다(p<.05). 결 론 : 시각적 피드백 훈련은 뇌졸중 환자에게 과제를 수행하는 능력을 평가하는 동적 균형과 정적 균형의 향상뿐만이 아니라 시지각 기능 향상에도 효과적인 것으로 나타났다.
Abstract
Background : The purpose of this study is to evaluate the efficacy of visual feedback training in enhancing balance and visual perception in people who have had a stroke. Methods : Twenty-eight chronic stroke patients were randomly sampled and divided into two groups: visual feedback training group (n=15) and control group (n=13). For control group, 40-minute classical rehabilitation therapy was provided 5 times per week for 8 weeks. For experimental group, 40-minute visual feedback training twice per week and 40-minute classical rehabilitation therapy three times per week were provided for 8 weeks. Before and after the treatment, we performed Dynamic Balance Test (DBT), Static Balance Test (SBT), and Motor-Free Visual Perception Test-Vertical format (MVPT-V). Results : In intra-group analysis, experimental group has shown significant improvement in DBT, SBT, and MVPT-V(p<.05). In inter-group analysis, experimental group has shown significantly better improvement than control group in distance of DBT, Y-speed of SBT, and MVPT-V(p<.05). Conclusions : Visual feedback training may be helpful to improve not only dynamic and static balance, but also visual perception in stroke patients.
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