[Arterial impedance in transient modes of the performance of the circulation system]

The authors consider transient processes for modifying arterial impedance, peripheral and elastic resistances of the arterial system, as well as some major hemodynamic parameters early in muscular performance. The analysis was made by applying experimental findings from 74 athletes. The transient processes were derived by using the mathematical modelling techniques on a computer. The termination of transient processes of arterial impedance and its determinants was shown to be asynchronous. Whether the values of arterial impedance at rest and during exercises of unlimited power are comparatively invariant is also discussed in the paper.