INFLUENCE OF VESTIBULAR LOADING ON THE CIRCULATORY SYSTEM IN VARIOUS TYPES OF WEATHER

Investigations of the functional activity of the vestibular analyzer are important because it does not only controls the position of the body in space and provides its balance, but also takes part in the regulation of the functioning of other systems of the body. However, it is known that the weather, affecting humans, causes a variety of reactions of the body through the integral nature and its multifactorial action. The scientific literature presents data on reactions to the effects of weather factors from different systems of the body. The aim of the study. Evaluate the effect of vestibular loading on the functional state of the circulato-ry system in different types of weather to determine fu-ture meteorological prophylaxis. Materials and methods. We evaluated vestibular stability by Lozanova and Baichenko method, performing rotational tests on the chair Barani in the I and III types of weather. Blood pressure and heart rate were determined before and after vestibular loading. Vestibular stability was evaluated in points on the following scale: above 4.5 points – high stability of the vestibular analyzer, from 3.0 to 4.5 – sufficient, below 3.0 points – insufficient. The parameters obtained from an objective examination of the cardiovascular system were used to calculate the pulse pressure that reflects the kinetic energy of the bloodstream; general vascular peripheral resistance; the level of metabolic and energy processes in the myocardium, according to the Robinson index; changes in the voltage level of the mechanisms of regulation of cardiovascular system activity. Research results and their discussion. Under the conditions of the first type of weather, in individuals with high vestibular stability, we observed changes in systolic and diastolic blood pressure and heart rate, which were based on Lozanov's and Baychenko's method, which was 4.8 points, when evaluating vestibular stabil-ity. In the case of the third type of weather, in individuals who did not observe vestibular dysfunction, we observed a tendency to decrease vestibular stability. For students with sufficient and insufficient resistance of the vestibu-lar analyzer, in the case of the first type of weather, ves-tibular stability was 2.8 points, which was accompanied by a greater change in blood pressure and heart rate, than in students with high vestibular analyzer stability. Under conditions of the third type of weather compared with the first, changes in the circulatory system after rotation test showed significant fluctuations of systolic, diastolic and high blood pressure. This indicates a decrease in vestibular stability under the conditions of the third type of weather. In the case of the third type of weather, the number of people with insufficient vestibular stability increased, namely 57 % of people for the first type of weather, the index of vestibular stability was equal to the level of "sufficient stability", but under the conditions of the third type went down to the level of "insufficient vestibular stability". Our results indicate that in the third type of weather among people with sufficient and insufficient vestibular stability, the endurance of the vestibular load decreases due to the decrease in the level of functional reserves of the cardiovascular system. With prolonged exposure to vestibular stimuli, such individuals are characterized by imperfect adaptation mechanisms. Conclusions. By assessing the response of the circulatory system to vestibular loading in types I and III of weather, we found a decrease in vestibular stability in type III of weather compared with type I.