Adaptation to physical activity of schoolchildren in public schools

In terms of educational process in secondary schools pupils indicators of cardiorespiratory system were assessed using an instrument pulse oximeter "elox-01S2" which uses an optical finger sensor (in the form of clips) and with the help of its place of registration of pulse wave from one of the fingers student. In the study group, students were offered an extra two hours on the program Sports Choice, including volleyball, basketball, handball and athletic gymnastics. In the comparison group students were engaged in the regular curriculum.