Pseunok A.A.
PECULIARITIES OF HEART RATE OF 1-3 CLASS CHILDREN STUDYING AT GYMNASIUM ^{[№ 7 ' 2004]}
Children studying in 1-3 classes were examined. Children's cardiovascular system functional state during a school year was investigated. It was stated that the beginning of a school year is accompanied by regulatory mechanisms tension. The results of the research show that sympathetic influence gradual decrease proceeds in age biodynamics during the chronotropic activity regulation in 1-3 classes.