午前と午後で比較した漸増漸減運動に対する心拍および血圧応答特性

概要

論文の詳細を見る
The purpose of this study was to compare of heart rate (HR) and blood pressure (BP) response during gradually increasing and decreasing workload exercise between in the morning and in the afternoon. Subjects of this study, comprising 9 healthy male volunteers, performed cycling exercise for 32min, recovered for 1min in the sitting position and for 10min in the supine position. They performed the exercise in two portions, a calibration test portion (12min) and a triangular test portions (20min). Both experimental tests were performed in the morning (8-10a.m.) and the afternoon (3-7p.m.). HR, BP and cardiac autonomic nervous system activity were continuously measured under both experiments. Maximal and minimal HR values, amplitude and phase lags at workload top and bottom were measured in each triangular exercise cycle. T30 was calculated on the basis of HR decrease rate from R-R intervals for 30 sec after exercise. Double Product (DP) was calculated by multiplying systolic BP (SBP) and HR. HR, SBP and DP at 20% VO_2max and bottom of workload exercise in the morning was significantly lower than the same workload exercise in the afternoon (p<0.05). However, at 60% VO_2max and workload top, HR showed no significant differences under both conditions. The DP (relative resting value) at 60% VO_2max and workload top of morning exercise was significantly higher than that of afternoon (p<0.05). The amplitude of morning exercise was also significantly higher than that of afternoon (p<0.05). The T30 of morning exercise was significantly lower than that of afternoon (p<0.05). HR and BP responses during morning exercise might be enhanced by increased cardia parasympathetic nervous system modulation in the morning, high intensity exercise in the morning should therefore be avoided.
2011-07-30

午前と午後で比較した漸増漸減運動に対する心拍および血圧応答特性

スポンサーリンク

概要

著者

関連論文

スポンサーリンク