呼吸調節下の軽強度運動時心拍変動スペクトルと尿中副腎ホルモンからみた自律神経機能の変化

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Nervous-hormone systems are reported to receive effectiveness of the respiratory regulation of such as the exchange volume and the breathing rate. Especially, the autonomic nervous activities and the secretion of the adrenal hormone are changeable with the controlled forced conditions of the respiratory function during the aerobic exercise. This study was designed to estimate activities of the autonomic nervous system (ANA) with changes of the heart rate variability (HRV) and the adrenal hormone related to three kinds of regulation of the respiratory rate (RR) - RR_<free>, 1.2RR_<rest>, and 1.7RR_<rest>. Undergoing 26 subjects (male) performed three experiments at the same time for three weeks, respectively. HRV spectra, the catecholamine (CA), 17-Ketosteroids (17-KS-S), and 17- Hydroxy corticoids (17-OHCS) of the adrenal hormone in the urine were measured during three experiments of these regulation of RR. The bicycle ergometer was applied for them to be loaded as the exercise-intensity of average 78.5 watt. As results of this study, at the case of faster RR regulation beyond twenty-five rates, the lower frequency bands (LF) of HRV spectra had increased at two experiments of 1.7RR_<rest> and 1.2RR_<rest> during those exercises remarkably and the secretory concentration of CA had increased significantly. At otherwise case of slower RR control below twenty-four rates, an augmentation of the high frequency band (HF), and a reduction of CA concentration were observed respectively. Regulation of RR should change the frequency bands of HRV spectra and concentration of the adrenal-hormone secretion, and then might modify the balance of ANA between the sympathetic and the vagus nerve activities.
日本運動生理学会の論文
2006-09-30

呼吸調節下の軽強度運動時心拍変動スペクトルと尿中副腎ホルモンからみた自律神経機能の変化

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