생리주기와 일일주기에 따른 일회성운동이순환기능(혈압, 심박수)과 혈중젖산에 미치는 영향

Abstract

The purpose of this study was to investigate the effects of circadian rhythm and menstrual cycle on blood pressure, heart rate and lactate. Twenty women participated in this study and were measured blood pressure, heart rate and lactate during before and immediately after acute exercise. Those parameters were measured at daily time(07:00hour, 21:00hour) and menstrual cycle(luteal phase, follicular phase) respectively. Exercise sessions took place on a treadmill performing 4 minutes of running to reach targeted intensity (75%HRmax) and continued during 30 minutes. Systolic and diastolic blood pressure is more higher 07:00hour than 21:00hour. Acute exercise increased systolic and diastolic blood pressure and this exercise induced increase of systolic blood pressure is more higher at luteal phase of 07:00hour than luteal phase of 21:00hour. Heart rate did not show any significant change with circadian rhythm and menstrual cycle. Blood lactate concentration increase immediately after acute exercise and this increase is more higher at follicular phase than luteal phase both at 07:00 and 21:00hour. Also the resting lactate concentration was lower at 21:00hour than 07:00hour both follicular and luteal phase. In conclusion, morning exercise increase blood pressure and this increase is more intensified at luteal phase than follicular phase immediately after exercise.