[Changes in the circulatory indices of healthy persons under various levels of physical load in relation to the initial type of hemodynamics].

The parameters of the central hemodynamics were studied in 78 normal subjects at rest and during bicycle ergometry of various intensity, using bipolar chest rheography. Three types of circulation were identified (eu-, hyper-, and hypokinetic) which represent normal variants ensuring (at exercise of various intensity) the constant level of energy required for the transportation of one litre of blood and the mean hemodynamic pressure. Various mechanisms of maintaining the adequate level of the mean hemodynamic pressure during exercise were identified.