[Physical exertion tolerance and the characteristics of hemodynamics in healthy persons depending on its type]

Central hemodynamic parameters were studied in 113 normal male subjects, aged 20-59, at rest and during bicycle ergometric exercise, with the help of tetrapolar chest rheography. Capacity for physical exercise was shown to depend on both the age and the basic hemodynamic type. Subjects with hyperkinetic circulation had the greatest, and those with hypokinetic circulation, the smallest capacity for exercise. The evaluation of BP and heart rate patterns, stroke and cardiac indices, and the indicator of heart performance during bicycle ergometry suggested that cardiovascular operation was more economical in normal subjects with eukinetic or hyperkinetic circulation, hence their greater capacity for physical exercise.