Journal of the Korea Academia-Industrial cooperation Society (한국산학기술학회논문지)

The Korea Academia-Industrial cooperation Society (한국산학기술학회)
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Changes in Postural Sway according to the Method of Transcutaneous Electrical Nerve Stimulation

경피신경전기자극의 적용 방법에 따른 자세 동요의 변화

  • 김희곤 (대전대학교 물리치료학과) ;
  • 신원섭 (대전대학교 물리치료학과)
  • Received : 2013.01.11
  • Accepted : 2013.03.07
  • Published : 2013.03.31
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Abstract

The purpose of this study was to examine the effect of transcutaneous electrical nerve stimulation (TENS) according to frequency and intensity on postural sway distance and velocity. TENS was applied to posterior aspect of the dominant leg with postural sway during one leg stance. Twenty-four healthy participants were measured while standing on a force platform with 5 different stimulation dosages of no TENS, high frequency and high intensity, high frequency and low intensity, low frequency and high intensity, low frequency and low intensity applied in 30 seconds. The five different dosages were performed with vision in random order. The results indicated that TENS dosage in the high frequency and low intensity had a significant decrease in postural sway(p<.05). From these results, we concluded that TENS delivered a high frequency and low intensity enhanced the postural sway in healthy adults. We expect that the postural sway of patients with decreased balance will reduce by application of TENS.

본 연구는 자세 동요의 감소를 목적으로 경피신경전기자극을 각각 다른 방법으로 적용하였을 때 가장 효과가 큰 방법을 알아보고자 실시하였다. 비복근에 경피신경전기자극을 적용하여 압력중심점의 이동으로 자세동요의 감소를 알아보았다. 24명의 참가자들은 힘판 위에 서있는 동안 경피신경전기자극을 전기자극 없이, 고빈도-고강도, 고빈도-저강도, 저빈도-고강도, 저빈도-저강도로 각각 30초간 적용하고 측정하였다. 5가지 적용방법을 무작위 순서로 눈을 뜬 상태에서 적용하였고, 힘판에서 나타나는 압력중심점의 이동거리와 속도를 측정하였다. 그 결과 경피신경전기자극을 실시한 군이 미적용군에 비해 자세동요가 통계적으로 유의하게 작아 경피신경전기자극이 동요의 감소에 효과가 있었다(p<.05). 적용 빈도에 따른 비교에서는 저빈도보다 고빈도에서 자세동요가 감소하는 경향을 보였고, 경피신경자극의 강도별 비교에서는 저강도를 적용한 경우가 고강도의 경우보다 통계적으로 유의한 감소를 보였다(p<.05). 이와같은 결과를 통해 자세동요를 감소시키기 위한 목적으로 경피신경전기자극을 이용하였을 때 고빈도(100Hz)-저강도(감각수준)에서 가장 큰 효과가 있었다(p<.05). 본 연구를 통해 경피신경전기자극이 자세동요를 감소시켜 균형능력을 향상시킴을 알 수 있었고, 고빈도-저강도의 적용이 가장 효과가 큰 방법임을 알 수 있었다. 이와같은 결과는 향후 균형능력이 감소된 환자들의 자세동요 감소를 위한 중재 방법으로 효과적으로 적용될 것으로 기대한다.

Keywords

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