Abstract
In children five to seven years of age, the adaptation of their cardiovascular system to a high physical activity as related to their individual somatic characteristics was studied. The methods of rheography and bicycle ergometry were used under physical loads with the power increasing from 1 and 1.5 W/kg body weight. During exercises, load grading according to the body’s somatic characteristics led to a significant increase in the degree of the children’s functional training. In children of different somatotypes, the indices of absolute physical efficiency and of both cardiac output (Q) and stroke volume (SV) increased significantly. The increase in hemodynamic indices in girls was higher than in boys of the same age.
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