Effects of Low-intensity Resistance Training with Skin Cooling on Muscle Thickness and Muscle Strength

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  • Aoki Takafumi
    Department of Physical Therapy, Faculty of Medical Technology, Niigata University of Health and Welfare
  • Nakamura Masatoshi
    Department of Physical Therapy, Faculty of Medical Technology, Niigata University of Health and Welfare Institute for Human Movement and Medical Sciences, Niigata University of Health and Welfare
  • Suzuki Daichi
    Department of Physical Therapy, Faculty of Medical Technology, Niigata University of Health and Welfare
  • Ohya Shuhei
    Department of Physical Therapy, Faculty of Medical Technology, Niigata University of Health and Welfare
  • Edama Mutsuaki
    Department of Physical Therapy, Faculty of Medical Technology, Niigata University of Health and Welfare Institute for Human Movement and Medical Sciences, Niigata University of Health and Welfare

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Other Title
  • 皮膚冷刺激下での低負荷筋力トレーニングが筋厚および筋力に及ぼす影響
  • ヒフレイシゲキ カ デ ノ テイフカ キンリョク トレーニング ガ キンコウ オヨビ キンリョク ニ オヨボス エイキョウ

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Abstract

<p>Resistance training is a treatment for muscle weakness and muscle atrophy. Although previous studies reported that muscle strength increased via changes in neural adaptation after low-intensity resistance training with skin cooling (SC), the effects of the training on both muscle strength and muscle thickness were unclear. Therefore, this study investigated the effect of low-intensity training of the triceps brachii with SC on muscle strength and muscle thickness. Volunteers were 12 healthy men, with one arm randomly assigned to SC and the other to control groups. Elbow extension exercises were performed for 8 weeks, and 1 repetition maximum (RM) and muscle thickness of triceps brachii were measured before and after training. Resistance exercise was performed thrice a week using a dumbbell adjusted to 50％ of 1 RM for both the groups. The SC side used an ice bag secured to the triceps brachii during training. There were no significant interaction effects of 1 RM and muscle thickness of triceps brachii；however, both variables significantly increased after training in both the SC and control groups. Muscle strength and muscle thickness increased after the 8-week training program with SC. No significant differences were observed between the groups.</p>

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