촉각 자극이 시각장애인의 자세 동요에 미치는 영향
The Effects of Light Touch on Postural Sway in People with Visual Impairment
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본 연구는 시각장애인과 정안인의 정적 균형 능력을 서로 비교하고, 손가락을 통한 가벼운 촉각 자극이 자세 동요에 미치는 영향을 파악하여 자세 동요에 대한 촉각 자극의 보상 작용을 확인하고자 실시하였다. 연구 대상은 시각 손상을 제외한 다른 균형 관련 장애가 없는 시각장애인(전맹) 23명과 균형 장애가 없는 정안인 23명이었다. 30초 동안 압력판 위에서 두 발 모아서기 자세와 촉각 자극을 동반한 두 발 모아서기 자세를 취하게 하고 자세 동요 거리 및 속도를 측정하였으며 다음과 같은 결과를 얻었다. 첫째, 촉각 자극의 유무와 관계없이 시각장애인의 자세 동요가 정안인의 자세 동요에 비해 유의하게 더 많았다. 둘째, 시각장애인과 정안인 모두 가벼운 촉각 자극을 주었을 때에 자세 동요가 유의하게 감소하였다. 셋째, 가벼운 촉각 자극을 주었을 때에 시각장애인의 자세 동요가 정안인의 자세 동요에 비해 유의하게 더 큰 감소를 나타냈다. 넷째, 좌우 방향의 자세 동요 거리 및 속도에는 집단 간 유의한 차이가 나타나지 않았다.
Abstract
This study was carried out for the purpose of confirming the compensatory response to light touch as for the postural sway, by mutually comparing the static balance in people with and without visual impairment and by grasping the effects of light finger touch on postural sway. The research subjects comprised 23 people with visual impairment without other balance-related handicap except visual disturbance and 23 sighted people without balance handicap. With being allowed to take feet together on the force plate and to take feet together that is accompanied by light touch, for 30 seconds, the sway distance and speed were measured. And the following results were obtained. First, regardless of whether or not light touch, the postural sway in people with visual impairment was much significantly more than the postural sway in sighted people. Second, both people with visual impairment and sighted people were reduced significantly the postural sway when having given light touch. Third, when having given light touch, the postural sway in people with visual impairment showed a significantly bigger drop compared to the postural sway in sighted people. Fourth, in the sway distance and speed of the right and left directions was not indicated the significant difference between groups.
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