Influence of Cooling Down Exercise on Heart Rate Variability after Steady Load Exercise at the Anaerobic Threshold Intensity

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  • UJIKAWA Takuya
    Department of Rehabilitation, Graduate School of Health Science and Technology, Kawasaki University of Medical Welfare
  • KOGA Tomoshige
    Department of Rehabilitation, Graduate School of Health Science and Technology, Kawasaki University of Medical Welfare

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Other Title
  • 嫌気性代謝閾値での定常負荷運動後のクーリングダウンが心拍変動に及ぼす影響
  • ケンキセイ タイシャ イキチ デ ノ テイジョウ フカ ウンドウ ゴ ノ クーリングダウン ガ シンパク ヘンドウ ニ オヨボス エイキョウ

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Abstract

<p>[Purpose] This study aimed to clarify the effects of cooling down exercise (CD) after steady load exercise on the autonomic nervous system by assessing heart rate variability (HRV). [Participants and Methods] A cardiopulmonary exercise test was conducted to determine the anaerobic threshold (AT) of 10 healthy adult males. Several days later, they performed steady load exercise for 20 minutes at their AT levels, followed by CD performed at 50% (AT50) or 75% (AT75) intensity of AT, or sitting quietly for 10 minutes. High-frequency (HF) and low-frequency (LF) components of HRV were analyzed. [Results] Before the end of CD, HF values were significantly decreased at AT75, and LF/HF values were significantly increased compared to those before exercise. On the other hand, significant changes were not observed in HF and LF/HF values in sitting quietly or AT50. [Conclusion] Compared to AT75, AT50 was considered more suitable for recovery of autonomic nervous system function.</p>

Journal

  • Rigakuryoho Kagaku

    Rigakuryoho Kagaku 34 (3), 309-312, 2019

    The Society of Physical Therapy Science

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