Central hemodynamics of young humans in conditions of an urgent adaptation to staying in middle mountains

Adaptation of an untrained young human, a flatland habitant, is accompanied with hemic, breathing and blood circulatory systems reconstruction. Due to this, investigations of accordance of chronotropic and inotropic components of a cardiac activity, cardio pumping function in conditions of middle mountains and habitable highlands (2000-3500 m above sea level) are particularly relevant. The tonometric check was made for 15 young humans during the expedition passed on the route with 1900-3000 m altitude. While passing the route the dynamic of heart rate, systolic and diastolic pressure, pulse pressure and mean hemodynamic arterial blood pressure. The systolic output and minute blood volume were calculated. As the altitude was rising, the significant stress of an adaptive mechanism was revealed, which appears with a significant increase of a heart rate with simultaneous decrease of systolic output on 3250 m altitude. In case of a fast descent to 1900 m altitude the increase of heart rate power and the rise of cardiac efficiency was revealed. A heterochronia of rising of a chronotropic and inotropic components of heart activity among intrained humans in conditions of middle mountains should be considered in sports physiology and sports medicine.