The Effect Of Acute Exertional Heat Stress And Heat Acclimation On Cardiovascular Responses And Stability In Human

Heat acclimatization refers to the phenomen of adaptation to the external heat acquired through the natural and gradual exposure to elevated temperature. Heat acclimation, in principle, is quite similar to heat acclimatization, the major difference being that heat acclimation is attained in environmentally controlled simulation chambers. The current study investigates the effect of acute exertional heat stress on cardiovascular function in Human and the impact of heat acclimation in minimizing the cardiovascular strain imposed upon acute exertional heat stress. Six human volunteers participated in the study. The were subjected to acute exertinal heat stress and heat acclimatized in Human Climatic Chamber simulated at 45 degrees C and 30% RH. Cardiovasculaer stabilization was observed upon heat acclimation to the conditions of exertional heat stress as measured upon evaluation of Heart Rate Variability, Cardiac Output and stroke Volume.