[Cardiovascular system reactivity in children of primary schools studying by new academic programs]

A longitudinal study of cardiovascular reactivity is performed among school-children taught according to newly adopted educational programs. The experiment is conducted in a full day school with three-year duration of the elementary course. The daily and annual dynamics of the basic indicators under study: heart rate, systolic and diastolic blood pressure, pulse, pressure, beat volume of the heart and a circulatory efficiency index display a noteworthy difference between working capacity of school-children beginning their education at the age of 6 and 7 years throughout the three school years. Regardless of the adequate adaptation to the learning of the disciplines experimented upon during the first school year, in the following years, and more particularly in the third class, clear cut signs of fatigue are noted both among school-children beginning school at 6 and 7 years. This gives sufficient reason to correlate the dynamics of indicators not to the age of school-children, but rather to the extent and essence of the school subjects, regime and teaching methods employed.