대한의용생체공학회:의공학회지 (Journal of Biomedical Engineering Research)

  • 제28권5호
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  • Pages.636-646
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  • 2007
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  • 1229-0807(pISSN)
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  • 2288-9396(eISSN)
대한의용생체공학회 (The Korean Society of Medical and Biological Engineering)
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MR 댐퍼를 적용한 불안정판에서 하지 근력 훈련이 근 활성도에 미치는 영향 분석

Analysis on the Effects of the Lower Extremities Muscle Activation during Muscular Strength Training on an Unstable Platform with Magneto-Rheological Dampers

  • 최윤정 (전북대학교 대학원 헬스케어공학과) ;
  • 박용군 (전북대학교 대학원 의용생체공학과) ;
  • 권대규 (전북대학교 공과대학 바이오메디컬공학부) ;
  • 김동욱 (전북대학교 공과대학 바이오메디컬공학부) ;
  • 김정자 (전북대학교 공과대학 바이오메디컬공학부) ;
  • 김남균 (전북대학교 공과대학 바이오메디컬공학부)
  • Choi, Y.J. (Dept. of Healthcare Engineering Graduate School, Chonbuk National Univ.) ;
  • Piao, Y.J. (Dept. of Biomedical Engineering Graduate School, Chonbuk National University) ;
  • Kwon, T.K. (Div. of Biomedical Engineering, College of Engineering, Chonbuk National Univ.) ;
  • Kim, D.W. (Div. of Biomedical Engineering, College of Engineering, Chonbuk National Univ.) ;
  • Kim, J.J. (Div. of Biomedical Engineering, College of Engineering, Chonbuk National Univ.) ;
  • Kim, N.G. (Div. of Biomedical Engineering, College of Engineering, Chonbuk National Univ.)
  • 발행 : 2007.10.31
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초록

Adequate postural control depends on the spatial and temporal integration of vestibular, visual, and somatosensory information. Especially, the musculoskeletal function is essential to maintain the postural control. The experimental studies was performed on the muscular activities in the lower extremities during maintaining and moving exercises on an unstable platform with Magneto Rheological(MR) dampers. The unstable platform of the developed system was controlled by electric currents to the MR dampers. A subject executed the maintaining and moving exercises which are presented through the display monitor. The electromyographies of the eight muscles in lower extremities were recorded and analyzed in the time and the frequency domain: the muscles of interest were rectus femoris(RF), biceps femoris(BF), tensor fasciae latae(TFL), vastus lateralis(VL), vastus medialis(VM), gastrocnemius(Ga), tibialis anterior(TA), Soleus(So). The experimental results showed that the muscular activities differed in the four moving exercises and the nine maintaining exercises. For the anterior-posterior pattern, the TA showed highest activities; for the left-right pattern, the TFL; for the 45, $-45^{\circ}$ pattern, the TFL and TA. Also, the rate of the increase in the muscular activities were affected by the condition of the unstable platform with MR dampers for the maintaining and moving exercises. The experimental results suggest that the choice of different maintaining and moving exercises could selectively train different muscles in various intensity. Futhermore, the findings suggested that the training using this system can improve the ability of postural control.

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