HYGIENIC ASSESSMENT OF HEMODYNAMIC PARAMETERS OF SCHOOLCHILDREN AND STUDENTS WITH DIFFERENT MOTOR ACTIVITY LEVEL

We studied the functional state of the cardiovascular system in 997 schoolchildren of Ufa and 597 students of the Bashkir State Medical University with different levels of physical activity. All subjects were divided into 3 groups depending on the level of physical activity: the first group (control) consisted of schoolchildren and students, which do not involve in sports outside the school and university programs, with the lowest physical activity compared with other groups; the second group included persons with an average level of physical activity, who in addition to physical education classes independently engage in physical culture: running, walking, outdoor games and daily morning exercises; the third group consisted of schoolchildren and students regularly engaged in sports clubs and sections, having the highest level of physical activity. The following hemodynamic parameters were calculated: systolic blood volume, minute blood volume, pulse pressure, fatigue coefficient, blood circulation efficiency ratio, Robinson index. The data obtained for each group were subjected to statistical analysis separately for males and females in the age aspect. We have established the positive influence of regular physical education and sports on the metabolic and energy processes in the heart, which in turn leads to an improvement in the main indicators of the cardiovascular system. Thus, among schoolchildren and students regularly engaged in physical culture and sports, significantly lower values of minute blood volume, blood circulation efficiency ratio, endurance coefficient, Robinson index and high values of systolic blood volume, pulse pressure were noted. The presence of reliable direct correlation of the weak degree of physical culture and sports with the majority of studied hemodynamic parameters was revealed.