Study on the Thickness of Supraspinatus Muscle according to Shoulder Joint Angle Change

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  • NAKAMURA Souta
    Department of Therapy, School of Nursing and Rehabilitation Sciences at Odawara, International University of Health and Welfare
  • KATSUHIRA Junji
    Department of Therapy, School of Nursing and Rehabilitation Sciences at Odawara, International University of Health and Welfare
  • HORIMOTO Yukari
    Tokoha Gakuen College of Rehabilitation Shizuoka
  • ISO Takehiko
    Nakaizu Rehabilitation Hospital
  • KUROSAWA Kazuo
    School of Rehabilitation Sciences at Fukuoka, International University of Health and Welfare

Bibliographic Information

Other Title
  • 肩関節外転角度変化と重錘負荷の有無が棘上筋厚に与える影響
  • カタカンセツ ガイテンカクド ヘンカ ト ジュウ スイ フカ ノ ウム ガ キョクジョウキンコウ ニ アタエル エイキョウ
  • —Comparison of No Load and Load—

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Description

[Purpose] The purpose of this study was to show the effect of change in shoulder abduction angle, with or without load, on the thicknesses of the supraspinatus muscle. [Subjects] The subjects were 40 young adults with no history of shoulder joint impairment. [Method] The thickness of the supraspinatus muscle of dominant hand was measured using ultrasonography at shoulder abduction angles of 0, 30, 60, 90 and 120 degree. The thickness of the supraspinatus muscle was also measured using the same procedure with a 3kg weight load at the same joint angles. [Result] The mean value of the thickness of the supraspinatus muscle increased in proportion to the increase of shoulder abduction angle regardless of load, and showed a peak value at 90 degrees of shoulder abduction angle. However, the mean value of the thickness of the supraspinatus muscle decreased at 120 degrees of shoulder abduction. The thickness of the supraspinatus muscle tended to increase between 0 and 30 degrees of shoulder abduction but decreased at 90 degrees of abduction when a load was applied. [Conclusion] The supraspinatus muscle was activated the most in positions of intermediate shoulder joint abduction without a load and activated most in the range of the initial abduction angle with a load.<br>

Journal

  • Rigakuryoho Kagaku

    Rigakuryoho Kagaku 28 (3), 339-342, 2013

    The Society of Physical Therapy Science

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