PhD A.A. Domozhilova¹
PhD N.V. Dubkova¹
PhD F.K. Makoeva^1
1Lesgaft National State University of Physical Education, Sport and Health, St. Petersburg

Keywords: occlusion test, athletes of different specializations.

Introduction. The informativeness of the occlusion test as a functional test is due to the fact that during its execution, a condition requiring a compensatory reaction of the vascular system is simulated.
The aim of the study was to evaluate the microcirculation response to an occlusion test in athletes of different specializations.
Methodology and organization of the study. Groups of subjects were formed in the study: group 1 – healthy untrained volunteers (n=9), group 2 – ski racers (n=8), group 3 – athletes of game sports (n=9), group 4 – representatives of martial arts (n=9). The study of microvessels was performed in the area of the nail bed of the finger of the hand using an ultrasound Dopplerograph Minimax-Doppler-K. With the help of this device, the values of the average linear velocity along the cross-section of the vessel (Vam, cm/s) were recorded. Statistical processing of the results was carried out using the Statistica 6.0 program. The significance level in the calculations of the Mann–Whitney and Wilcoxon criteria was determined at p<0.05. The data obtained are presented as median and quartiles (25% and 75%).
The results of the study and their discussion. The data on the assessment of blood flow velocity at rest and after vascular decompression are presented in the table.
It is known that the reactivity of the microvascular bed in athletes during various functional tests may vary depending on the specialization, qualification and age of athletes, as well as on the temperature conditions in which their training and competitive activities mainly take place [1].
Conclusions. The results of the study indicate a more pronounced microcirculation response to the occlusion test in athletes specializing in cross-country skiing and martial arts, compared with changes in blood flow velocity in football players and healthy untrained subjects, however, the differences noted were not statistically significant. In this regard, the data on the specific features of the adaptation of the arteries of the upper extremities in athletes, depending on the type and magnitude of the load, which is mainly presented to the muscles of the arms, are interesting. At the same time, despite the fact that the arteries provide blood flow to the microcirculatory bed, it is necessary to take into account that the mechanisms underlying the regulation of macro- and microvessels differ.

Literature

1. Microcirculatory-tissue and biochemical parameters of blood circulation in athletes in response to physical activity / F.A. Mavliev, A.S. Nazarenko, N.H. Davletova, A.A. Nabatov // Theory and practice of physical culture. – 2020. – No. 10. – p. 36.