Relevance. The health of teenagers should be assessed not only by their morphometric data, but also by the functional state of the main organs and systems that provide adaptive reserve potential. Objective. The purpose of our study was to evaluate the functional capabilities of the cardiovascular system of teenagers according to biomechanical indexes of blood circulation. Methods and materials. 272 teenagers aged 13–14 (176 boys and 96 girls) participated in the study. Among the boys, there are 104 pupils of the basic medical group of physical education and 72 of the preparatory group (2nd health group). There were 48 primary and 48 preparatory group pupils among the girls. The results of Kubicek rheography and rheovasography were used to study the biomechanical parameters of the cardiovascular system. They were evaluated using the methods of mathematical statistics (the MedStat program (Ye. Lyakh, 2006)). Results. There were no any statistically significant differences between most of the rheovasographic parameters of the students of the preparatory and basic medical groups of physical education. Instead, there are certain distinctive features of the peripheral blood flow of pupils of the preparatory group of physical education (with reduced functional capabilities). Thus, the , indexes of the rapid filling timing in the pupils of the preparatory group of physical education are lower than in the main group.In the boys of the preparatory group of physical education on both hands and in the girls of this group on the left hand, the blood flow time for the forearms is slightly increased. Greater deviations from the norm for the amplitude of rheograms were found in pupils of the preparatory group of physical education. The number of pupils with asymmetric blood supply to the forearms in the preparatory group of physical education is more than in the main group. A decrease in the blood supply of the vessels of the forearms is registered more often in teenagers who are assigned to the preparatory group of physical education. In the boys of the preparatory group of physical education, the blood vessels of the shins are worse. Conclusions. Some distinctive features for the state of peripheral blood flow of teenagers in the preparatory group of physical education were revealed. Thus, the indexes of the rapid filling timing, the amplitude of the rheograms were lower, and the time of propagation of the pulse wave was higher than normal. Asymmetry and decreased blood flow in the vessels of the upper and lower extremities were noted in most teenagers with impaired
Relevance. One of the human systems, which is particularly acutely affected by external environmental factors is the respiratory system. These disorders in adolescence are especially noticeable when intense and dramatic changes in the child's body on the path to biological maturity occur. Goal. The purpose of our study was to evaluate the functional indexes of the external respiration of adolescents of different medical groups of physical training. Materials and methods. The functionality of the respiratory system was evaluated by the results of pneumothography and respiratory retention. They were evaluated using mathematical statistics using the Medstat program (Yu.E.E., 2006). 76 middle school age pupils (38 boys and 38 girls) were surveyed, which belong to the preparatory group of physical training and 40 peers (20 boys and 20 girls) who attend the main physical education group. For comparison, normal indexes were used according to computer conclusions and scientific literature data Results. The normal performance of the VC according to the results of computer conclusions, registered in 42 % of pupils of the preparatory group of physical education, higher than the norm have 21 % of adolescents, 36 % of adolescents have significant violations of this index. According to the computer's conclusion, 52% of the subjects are characterized by extremely significant changes of FVC. A similar pattern is also noted for the index in the boys of this group. According to the results of computer findings 69% of pupils of the preparatory group have normal indexes of PEF, 21% have a higher then norm, 10% a slight decrease. The results of the functional test of Shtanger (delay in inhalation) showed that in the preparatory group this index is lower than the norm Volumetric indicators of the external respiration of pupils of the preparatory group in more than half of adolescents are significant changes. The volumetric indexes of such adolescents are significantly lower than the norm, by almost 1 liter. The rates of the respiratory system of the MEF 25, 50, 75% are lower than the norm by 1.5 - 2 times, and PEF does not differ from the norm. Conclusions. Indexes of external respiration in more than half of the examined pupils of the preparatory group were changed. The volumetric and flow rates of the respiratory system were significantly lower than the norm. A similar trend was followed by functional respiratory tests.
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