Effect of the ankle joint position on the Quadriceps muscle setting exercise

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  • Watanabe Syuji
    Department of Physical Therapy, Faculty of Medical Science , Teikyo University of Science
  • Yoshizawa Yuto
    Department of Physical Therapy, Faculty of Medical Science , Teikyo University of Science
  • Asahi Haruka
    Department of Physical Therapy, Faculty of Medical Science , Teikyo University of Science
  • Fukasawa Miri
    Department of Physical Therapy, Faculty of Medical Science , Teikyo University of Science
  • Iwamura Masaki
    Department of Physical Therapy, Faculty of Medical Science , Teikyo University of Science
  • Wajima Yuki
    Department of Physical Therapy, Faculty of Medical Science , Teikyo University of Science
  • Naraki Toshiya
    Department of Physical Therapy, Faculty of Medical Science , Teikyo University of Science
  • Hiraga Atsushi
    Department of Physical Therapy, Faculty of Medical Science , Teikyo University of Science
  • Nakayama Akihiro
    Department of Physical Therapy, Faculty of Medical Science , Teikyo University of Science

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Other Title
  • 足関節角度の違いがQuadriceps muscle setting時の筋活動量に及ぼす影響
  • アシカンセツ カクド ノ チガイ ガ Quadriceps muscle settingジ ノ キン カツドウリョウ ニ オヨボス エイキョウ

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[Purpose] Quadriceps muscle setting (QS) is often performed to maintain or improve quadriceps femoris muscle strength. We investigated the effect of ankle joint angle on muscle activity during QS.[Participants] The subjects were 7 healthy men. [Method] QS was performed for 5 seconds with the ankle in three different positions: intermediate, 10º of dorsiflection(dorsiflexed), or 40º of plantar flexion (plantarflexed), and the activity of the vastus medialis muscle (VM), vastulus lateralis muscle (VL),semitendinosus muscle (SM), medial head of the gastrocnemius muscle (MG), and tibialis anterior muscle (TA) were measured by using surface electromyography. Differences between the ankle positions were investigated by using the Friedman test. [Results] The VL and TA exhibited significantly increased muscle activity in the dorsiflexed position (p<0.05). [Conclusions]Our results suggested that ankle position must be taken into account during QS, depending on the therapeutic objective.

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