朝食摂取の有無と漸増漸減負荷運動時の心拍,血圧および呼吸応答との関連性 [in Japanese] Relationships among breakfast intake and heart rate, blood pressure, and respiratory response during an unsteady workload exercise [in Japanese]
Access this Article
Search this Article
This study aimed to examine the effects of breakfast intake on physiological responses during an unsteady workload exercise. Participants included 15 healthy men who provided written informed consent before taking part in the study. All participants performed a cycling exercise for 32 min and recovered for 1 min. The exercise had two parts: a calibration test and an unsteady workload exercise test. The calibration test consisted of three 4-min bouts of exercise at 20%, 60%, and 40% maximal oxygen uptake (VO_2max). The unsteady exercise test consisted of 4-min bouts of exercise with gradual increases and decreases in workload at 20% and 60% VO_2max. The experimental conditions were a control (C) condition and an eating breakfast condition (E-condition). Exercise tests under both experimental conditions were performed at the same time each day (9-11 a.m.). Heart rate (HR), blood pressure (BP), oral temperature, and oxygen uptake were measured in both experimental conditions. Maximal and minimal values, amplitude, and phase lags were measured during each cycle of unsteady workload exercise. In the resting state, HR, systolic BP (SBP), and oral temperature were significantly higher in the E-condition than in the C-condition. During the calibration exercise test, HR at 20% VO_2max was significantly higher in the E-condition than the C-condition. The SBP at 20%, 60%, and 40% VO_2max in the E-condition was significantly higher than the C-condition. During the unsteady workload exercise test, no significant differences in HR were observed between the 2 conditions. However, the SBP in the E-condition was significantly higher than the C-condition. Oxygen uptake showed no significant difference between the 2 conditions. The amplitude of HR in the E-condition was significantly higher than the C-condition. During recovery, the SBP in the E-condition was significantly higher than the C-condition. In conclusion, eating breakfast enhances cardiovascular response during exercise and recovery.
日本運動生理学雑誌 22(2), 41-49, 2015-10