대한의용생체공학회:의공학회지 (Journal of Biomedical Engineering Research)

  • 제28권6호
  • /
  • Pages.825-831
  • /
  • 2007
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  • 1229-0807(pISSN)
  • /
  • 2288-9396(eISSN)
대한의용생체공학회 (The Korean Society of Medical and Biological Engineering)
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공압 고무 엑츄에이터를 장착한 주관절 보조기 착용에 따른 상지 근력 특성

Characteristics of the Muscular Activities with Elbow Orthosis using Pneumatic Rubber Muscle

  • 홍경주 (전북대학교 대학원 의용생체공학과) ;
  • 김경 (전북대학교 대학원 의용생체공학과) ;
  • 권대규 (전북대학교 공과대학 바이오메디컬공학부) ;
  • 김동욱 (전북대학교 공과대학 바이오메디컬공학부) ;
  • 김남균 (전북대학교 공과대학 바이오메디컬공학부)
  • Hong, K.J. (Dept. of Biomedical Engineering Graduate School, Chonbuk National University) ;
  • Kim, K. (Dept. of Biomedical Engineering Graduate School, Chonbuk National University) ;
  • Kwon, T.K. (Div. of Biomedical Engineering, College of Engineering, Chonbuk National University) ;
  • Kim, D.W. (Div. of Biomedical Engineering, College of Engineering, Chonbuk National University) ;
  • Kim, N.G. (Div. of Biomedical Engineering, College of Engineering, Chonbuk National University)
  • 발행 : 2007.12.31
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초록

An elbow orthosis with a pneumatic rubber actuator has been developed to assist and enhance upper limb movements and has been examined for the effectiveness. The effectiveness of the elbow orthosis was examined by comparing muscular activities during alternate dumbbell curl exercises with and without the orthosis. The subjects participated in the experiment were younger adults in their twenties. The subjects were instructed to perform dumbbell curl motion in a sitting position with and without orthosis in turn and a dynamometer was used to measure elbow joint torque outputs in an isovelocity mode. The measurements were done with four various dumbbell loads: 0 kg, 1 kg, 3 kg, and 5 kg. The orthosis was pneumatically actuated and controlled in a passive mode. The most comfortable air pressure to the pneumatic actuator was determined to be 0.294MPa. Electromyography(EMG) was also measured during curl exercises. The muscles of interest were biceps brachii(BB), triceps brachii(TB), brachioradialis(Bo), and flexor carpi ulnaris(FCU) in the upper limbs. The experimental results showed that the muscular activities themselves significantly reduced with elbow orthosis on in performing similar activities without orthosis. As a result of this experiment, the effectiveness of the developed upper limb orthosis was confirmed and the level of assistance was quantified.

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