Influence of Change in Weight Load during Hip Extension and Abduction on Electromyographic Activities of the Gluteus Medius and Maximus Fibers

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  • 股関節伸展および外転保持課題に対する負荷量の変化が中殿筋，大殿筋の各線維の筋電図積分値に与える影響
  • コカンセツ シンテン オヨビ ガイテンホジ カダイ ニ タイスル フカリョウ ノ ヘンカ ガ チュウデンキン,オオトノキン ノ カク センイ ノ キンデンズ セキブンチ ニ アタエル エイキョウ

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Abstract

[Purpose] Electromyography (EMG) was used to examine gluteus medius and maximus activities with the hip in sustained extension and abduction. [Subjects and Methods] Subjects were 10 healthy male persons, mean age of 24.4 years. The gluteus medius and maximus overlap area was confirmed with ultrasonic imaging. EMG activity of each muscle was measured during a change in lower limb weight load on the measurement side with the hip in sustained extension and abduction. [Results] Activities of the gluteus medius posterior fibers, overlap area, and gluteus maximus upper fibers increased with hip extension, and activities of the gluteus medius and overlap area increased with hip abduction. [Conclusion] Gluteus medius posterior fibers were identified in the area extending from the ventral side of the angle between the lines that connect the vertex of the iliac crest and greater trochanter, and the posterior superior iliac spines and greater trochanter. The gluteus maximus upper fibers were not involved in hip abduction.

Journal

  • Rigakuryoho Kagaku

    Rigakuryoho Kagaku 33 (1), 121-126, 2018

    The Society of Physical Therapy Science

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