Background The aim of this study was to assess changes in skin microbiota of wrestlers during training sessions and to determine the sensitivity of hemolytic bacterial isolates to antiseptics. Methods The main skin bacterial isolates obtained from the skin of 15 wrestlers were identified by cultivation method, with the following MALDI Biotyper and 16S rRNA gene sequencing methods. The sensitivity of hemolytic isolates to antiseptics (Veltosept-2, Cutasept F, Chlorhexidine, Miramistin, and Hydrogen Peroxide) was evaluated by measuring the size of bacterial growth inhibition zone on agar plates. Results Opportunistic bacteria of the species Bacillus cereus, Staphylococcus aureus, S. epidermidis, and S. saprophyticus were the most commonly found species in skin microbiota of wrestlers before and after training sessions. Representatives of all these species mostly had a hemolytic activity. An alcohol-containing antiseptic Veltosept-2 showed the strongest inhibitory effect on the bacterial isolates of athletes' skin microbiota most frequently detected in this study. Conclusions The general increase in the bacterial colonization of wrestlers' skin, as well as the presence of hemolytic forms of opportunistic bacteria in cutaneous microbiota, indicates dysbiotic changes and a decrease in the protective features of the host organism. Veltosept-2 application can reduce the incidence of skin infections in contact sports athletes with the highest efficiency.

Abstract. The article presents the results of a study whose aim was to assess the prevalence of maladaptive eating behavior (MEB) among students of a sports university. Materials and methods: a survey was conducted among 768 students of the Volga region GUFKSiT using the "Eating Behavior Assessment Scale" (EBAS). Results. It has been established that only 41.11.78% of students of a sports university have no signs of MEB. The presence of deviations according to the subscales of the EBAS was revealed in 72.94.54% of wrestlers, 55.03.2% of sports games athletes, 57.84.59% of complex coordination sports athletes and 55.84, 23% athletes of cyclic sports and 59.43.71% of non-athletes. Conclusions. The use of EBAS made it possible to identify not only the clinical signs of MEB in students of a sports university, but also the psychological characteristics and behavioral stereotypes characteristic of people with MEB. Complex coordination sports athletes and wrestlers - a group of special risk for the development of MEB. Among athletes of team sports, as well as boys and girls of non-athletes, clinical symptoms of MEB are less common, but psychological characteristics and behavioral stereotypes typical of people with MEB are more often detected, which can be considered as a high predisposition to the development of MEB. EBAS can be used as a screening method for determining MEB at the prenosological stage, to identify groups of students at particular risk and develop targeted preventive measures, taking into account gender characteristics and the specifics of students' sports activities.

The aim is to reveal the features of microcirculation of athletes with various sport qualifications practicing cyclic endurance sports, as well as its dependence on the VEGF (vascular endothelial growth factor) level and hematological parameters. Research materials and methods. The study involved athletes aged 18-22 practicing track-and-field (middle and long distances, from 1st rank to Master of Sports of the Russian Federation), swimming (middle distances, from 1st rank to Master of Sports of the Russian Federation), skiing (from 1st rank to Master of Sports of the Russian Federation), and non-athletes. We utilized a laser detection to record parameters of peripheral blood flow and tissue fluorescence amplitudes. Research results and discussion. We recorded significant difference in microcirculation parameters for skiers and field athletes. Skiers demonstrated a lower value of average perfusion, while field athletes showed its double predominance in contrast with skiers. At the same time, cooling of the studied area caused no difference between the studied groups. Heating of the studied area resulted in the statistically significant changes in microcirculation between groups of skiers in contrast with field athletes and swimmers, as well as swimmers, in contrast with field athletes and non-athletes. At the same time, the VEGF level had correlations with the microcirculation of field athletes, and it was recorded with the NADN parameter under the cooling (r = 0.89; p = 0.019) and heating (r = 0, 94; p = 0.005) conditions. Conclusion. We revealed the signs of long-term adaptation of peripheral blood flow of athletes conditioned by the type and conditions of sport activities. It results in difference in perfusion of the studied skin area.

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