PNF and Movement

  • 제21권1호
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  • Pages.139-146
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  • 2023
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  • 2508-6227(pISSN)
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  • 2508-6472(eISSN)
대한고유수용성신경근촉진법학회 (Korea Proprioceptive Neuromuscular Facilitation Association)
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아래팔의 자세 변화에 따른 어깨 가쪽돌림 시 가시위근과 가시아래근의 근활성도 분석

Analysis of the Activity of the Supraspinatus and Infraspinatus Muscles during Lateral Rotation of the Shoulder according to the Posture Change of the Forearm

  • 엄주리 (부산가톨릭대학교 대학원 물리치료학과) ;
  • 이동률 (거인병원 물리치료실) ;
  • 이민형 (부산대학교병원 재활의학팀)
  • Ju-Ri Eom (Department of Physical Therapy, Graduated school Catholic University of Pusan) ;
  • Dong-Rour LEE (Department of Rehabilitation Medicine, Geo-in Hospital ) ;
  • Min-Hyung Rhee (Department of Rehabilitation Medicine, Pusan National University Hospital)
  • 투고 : 2023.04.12
  • 심사 : 2023.04.17
  • 발행 : 2023.04.30
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초록

Purpose: The aim of this study is to provide basic information to create an efficient training program to improve shoulder stability and function in patients with injuries and in patients having undergone surgery of the supraspinatus and infraspinatus muscles, which have a relatively high incidence of injury in shoulder joint disease. Further, independent activities of the supraspinatus and infraspinatus muscles were investigated according to forearm rotation and the neutral and lateral rotation postures. Methods: The activities of the supraspinatus and infraspinatus muscles were measured using surface electromyography in 22 healthy adults in Busan, and isokinetic muscle strength measurement equipment was used to measure muscle strength during shoulder lateral rotation. The subjects performed lateral rotation of the shoulder in three different forearm postures (neutral, supine, prone) to measure shoulder muscle activity and lateral rotation strength. Results: The independent activity ratio (% Isolation) of the supraspinatus and infraspinatus muscles during lateral rotation of the shoulder joint demonstrated a significant difference (p<0.05) according to the change in forearm posture. Conclusion: The supraspinatus muscle showed independent activity ranging from highest to lowest in the order of pronation, neutral, and supination of the forearm, while the independent activity of the infraspinatus muscle ranged from highest to lowest in the order of neutral, supination, and pronation of the forearm. Therefore, the most active forearm positions for the supraspinatus and infraspinatus muscles are pronation and neutral, respectively.

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