Strain effects on central hemodynamic and cardiovascular load rates in elite archers
Objective of the study was to analyse strain effects on central hemodynamic and cardiovascular load rates in elite archers. The central hemodynamic rates including stroke volume (SV), cardiac output (CO), heart rate (HR) and key phases of cardiac cycle were obtained using tetrapolar rheography. We applied special software tools to compute elastic (Ea) and peripheral (R) arterial system resistance rates based on the systolic and diastolic arterial pressure rates. The study data showed that the vascular resistance rates vary in a wide range from the optimal/ normal levels to sub-hypertonic and hypertonic rates, with the systolic and diastolic pressure staying within the normal range prior to and in the expander drawing phases and in the rehabilitation phase. The stroke volume and minute rates were found to significantly fall with growth of the vascular resistance rates.