漸増負荷運動中の心拍揺動パワースペクトルの推移

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  • 中村 好男
    早稲田大学情報科学研究教育センター所沢情報処理センター
  • 玉木 啓一
    早稲田大学情報科学研究教育センター所沢情報処理センター
  • 篠原 稔
    東京大学教育学部体育学スポーツ科学研究室
  • 木村 裕一
    早稲田大学理工学部
  • 村岡 功
    早稲田大学人間科学部

書誌事項

タイトル別名
  • POWER SPECTRUM OF HEART RATE FLUCTUATIONS DURING INCREMENTAL CYCLE EXERCISE
  • ゼンゾウ フカ ウンドウチュウ ノ シンパク ヨウドウ パワー スペクトル ノ

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説明

Spectral analysis was applied to investigate whether the system for control of heart rate (HR) is influenced by exercise intensity. Five healthy males performed incremental exercise on an electrically braked cycle ergometer until exhaustion. The work rate was increased at 12 W/min following 2 min of exercise at a constant load of 20 W. HR was measured every second from R-R intervals. The power spectrum was calculated every 10 s using the FFT method for 64 consecutive data points. Power spectra during 20 W exercise showed a similar pattern to those in previous reports on resting HR perturbations, Although interindividual differences were observed for the spectrum patterns related to exercise intensity, there was a characteristic pattern revealing dissipation of the spectral power above a frequency of 0.2 Hz for all subjects. This pattern was not maintained for more than 1 min in any of the subjects, and was followed by a semirandom pattern whose magnitude varied among the subjects. These results support the hypothesis that the cardiac pacemaker is influenced by exercise intensity, presumably due to sympatho-vagal interaction with the respiratory control system.

収録刊行物

  • 体力科学

    体力科学 38 (5), 208-214, 1989

    一般社団法人日本体力医学会

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