Hip Joint Internal and External Rotation Angles in the Sitting Posture Influence Hip Joint Muscle Activities

  • ITO Riku
    Department of Rehabilitation, Rokujizo General Hospital Graduate School of Health Sciences, Kansai University of Health Sciences
  • HAYATA Takashi
    Department of Rehabilitation, Rokujizo General Hospital
  • FUJIMOTO Masashi
    Department of Rehabilitation, Rokujizo General Hospital
  • OHNUMA Toshihiro
    Department of Rehabilitation, Rokujizo General Hospital Graduate School of Health Sciences, Kansai University of Health Sciences
  • WATANABE Hirofumi
    Department of Rehabilitation, Rokujizo General Hospital
  • SUZUKI Toshiaki
    Graduate School of Health Sciences, Kansai University of Health Sciences

Bibliographic Information

Other Title
  • 座位での股関節内旋・外旋角度変化が大殿筋上部線維,中殿筋前部線維,大腿筋膜張筋の筋電図積分値に及ぼす影響
  • ザイ デ ノ コカンセツ ナイセン ・ ガイセンカクド ヘンカ ガ オオトノキン ジョウブ センイ,チュウデンキン ゼンブ センイ,ダイタイキンマクチョウキン ノ キンデンズ セキブンチ ニ オヨボス エイキョウ

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Abstract

[Purpose] Electromyography (EMG) was used to examine the activities of the muscles surrounding the hip joint which are involved in maintaining internal and external rotation in the sitting posture. [Subjects and Methods] The subjects were 10 healthy males, 20 lower limbs. EMG of the gluteus maximus upper fibers, gluteus medius, and tensor fasciae latae muscles was performed in the sitting posture. The activities during internal and external rotation of the hip joint at 10, 20, and 30° were compared among the angles. [Results] Integrated EMG of the gluteus maximus upper fibers at 30° of internal rotation was significantly greater those at 10 and 20° internal rotation. Integrated EMGs of the gluteus medius and tensor fasciae latae muscles at 30° internal rotation were significantly greater than those at 10° internal rotation. [Conclusion] The gluteus maximus upper fibers are involved in maintaining internal rotation at hip flexion of 90° without participating in the maintenance of external rotation.

Journal

  • Rigakuryoho Kagaku

    Rigakuryoho Kagaku 32 (3), 443-447, 2017

    The Society of Physical Therapy Science

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