Diurnal variation of changes in regulatory system of circulation during thermal stress with transient decreases in blood pressure

高温条件导致直立性不耐受。本研究旨在探讨热应激时血液循环调节系统变化的日变化及血压的短暂性降低，并评价全身皮肤降温和适度运动对维持直立耐力的作用。在轻度高温条件下，脑血流量对短暂性血压下降的调节仅在晚上有所改善。研究表明，皮肤降温和运动对改善循环系统有明显的昼夜变化。

Hyperthermic conditions lead orthostatic intorelance. The purpose of this study is to investigate the diurnal variation of changes in regulatory system of circulation during thermal stresses with transient decreases in blood pressure and evaluate the effect of whole body skin cooling and moderate exercise to maintain orthostatic torelance. The regulation of cerebral blood flow to transient decreases in blood pressure only improved in the evening under mild hyperthermic condition. It was shown that the diurnal variations of improvement of circulation system by skin cooling and exercise.