Abstract

The authors have studied the cardiovascular responses to maximal isometric exercise, obtained with hand grip, of a group of trained volley-ball athletes compared with a control group of untrained subjects. The authors have used the impedance cardiogram for the evaluation of systolic time intervals and hemodynamic rheographic parameters: stroke volume, cardiac output, cardiac index; besides the authors have valued the variations of arterial blood-pressure, heart rate, and double product. The authors have found out significant variations, in comparison between groups, both of pre-ejection period (PEP), of stroke volume and cardiac output, and of systolic and diastolic arterial blood-pressure, heart rate and of relative double product. Verf.-Referat