Influence of Functional Electrical Stimulation during Gait Training on Motor Unit Action Potential

기능적전기자극을 이용한 보행훈련이 편마비 환자의 하퇴근육의 근전위활동에 미치는 영향

  • Kang, Yang-Hoon (Dept. of Physical Therapy, Graduate School, Dongshin University) ;
  • Seo, Sam-Gi (Dept. of Physical Therapy, Graduate School of Seonam University) ;
  • Lee, Jeong-Woo (Dept. of Physical Therapy, Hyoin Hospital) ;
  • Yoon, Se-Won (Dept. of Physical Therapy, Jinju International University) ;
  • Kim, Yong-Eok (Dept. of Physical Therapy, Dongshin University) ;
  • Kim, Tae-Youl (Dept. of Physical Therapy, Dongshin University)
  • 강양훈 (동신대학교 대학원 물리치료학과) ;
  • 서삼기 (서남대학교 대학원 물리치료학과) ;
  • 이정우 (효인병원 물리치료실) ;
  • 윤세원 (진주국제대학교 물리치료학과) ;
  • 김용억 (동신대학교 물리치료학과) ;
  • 김태열 (동신대학교 물리치료학과)
  • Published : 2007.03.31

Abstract

This study divided 35 hemiplegia patients into control group having standard physical therapy and gait training and functional electrical stimulation(FES) group using FES during gait training in order to examine the effects of applying FES to ankle joint dorsiflexor on motor unit action potential. Stimulation conditions of FES were pulse rate 35 pps, pulse width $250{\mu}s$, and on-time 0.3 second, treatment hour was 30 min. and treatment period was once a day for five days a week through six weeks. For functional evaluations before and after treatment, root mean square(RMS) were measured and the following conclusions were obtained. : In RMS analysis of motor unit action potential, gastrocnemius was significantly reduced in both weight bearing(p<.001) and bearing condition (p<.05). In conclusion, application of FES to hemiplegia patients in recovery stage during gait training decreased RMS and it was interpreted that it was caused by mitigation of muscular spasticity by reduction of motor unit.