Age peculiarities of the cardiovascular system and blood microcirculation in students under the influence of dosed physical training

Abstract

We investigated the adaptive capabilities of the cardiovascular system and blood microcirculation in
18–21-year-old students under the influence of dosed physical training. It was shown that there are significant
age-related differences in the indicators of the cardiovascular system function at rest. By the 21-th year the majority of the studied parameters have reached the level characteristic of adult young men. After dosed phys-ical training the indices of the cardiovascular system function increased to a greater or lesser extent, and the greatest increase was observed in 21-year-old students. In younger age groups the changes were less effective, which characterizes the adaptive capabilities of the cardiovascular system depending on age. A marker indicator of the blood microcirculation system functioning — a microcirculation parameter that determines the direction of the microcirculation response to a dosed physical training — has been identified. It was found that among students of the 1st subgroup (low level of the microcirculation parameter) after physical activity it increased, and among students of the 2nd subgroup (high level of the microcirculation parameter) it mainly decreased, which characterizes the inclusion of various regulatory mechanisms in the blood microcirculation system. A decrease in the index of microcirculation efficiency under the influence of physical training was shown (the most significant in younger students). Such features can be explained by the lack of development of compen-satory reactions in the microcirculation system.