PhD, Associate Professor E.N. Dudnik^{1, 2}
Dr.Med, Professor О.S. Glazachev^{1, 2}
Postgraduate M.A. Zapara^{1, 2}
Postgraduate V.G. Samartseva^{1, 2
1}I.M. Sechenov First Moscow State Medical University (Sechenov University), Moscow
²Institute of Normal Physiology. P.K.Anohin, Moscow

Key words: hyperthermia, psychoemotional state, anxiety.

The aim of the study was to assess the impact of passive hyperthermia on the indicators of psycho – emotional state in athletes.
Methodology and organization of the study. The randomized controlled study involved 26 Amateur athletes (M., Ms. age-20.2±2.1 years, sports-football, handball, sports. experience-4-7 years). The research Protocol is formed in accordance with the provisions of the "Bioethical rules of human research" and approved by the bioethical Commission of the University. Athletes of the experimental group (EG, 14 people) underwent 24 procedures of passive hyperthermia-PG (capsule "alpha basic" (Sybaritic Inc.) was used., Minnesota, USA. The average temperature in the capsule-65-80 oC. The duration of one procedure – 40 minutes); participants of the control group (KG, 12 people.) for a month did not change the usual mode of activity. Athletes of the two groups did not differ in basic demographic and physiometric characteristics. Initially, after 12 and 24 PG procedures, all participants underwent psychological testing using the SF-36 questionnaire. Additionally, the level of anxiety was assessed using the scale of reactive and personal anxiety, developed by Charles Spielberger.
The results of the study and their discussion. It was revealed that the course of PG led to a significant increase in the values of General health after 12 procedures from 65.4±10.9 to 76.8±11.2 (p=0.008) and to 88.8±9.7 (p=0.005) after 24 procedures. A similar trend was observed in the values of physical activity indicators: 92.5±9.8–96±5.7 (p=0.005) – 98±3.5 (p=0.03), emotional role functioning: 47.2±23.1 – 67±22 (p=0.03) – 90.1±15.9 (p=0.008), pain intensity: 69.4±24 – 88.4±13.7 (p=0.008) – 95.8±9.2 (p=0.008) and mental health: 66.8±15 – 72.4±13.7 (p=0,04) – 82,4±14,1 (p=0,01). Values of indicators of situational anxiety significantly decreased only by the end of the course: 44.1±8.9 – 39.5±6.2 (p=0.02), but remained in the range of the average level. There were no significant differences in the studied parameters in KG. It can be assumed that such changes are associated primarily with the redistribution of the balance of influence of the departments of the VNS.
Conclusion. The course of passive temperature acclimatization procedures leads to an increase in the psycho‑emotional state of Amateur athletes, reduces the level of situational anxiety.
The work was partially supported by RFBR grant No. 19-013-00465 A "Direct and cross-effects of adaptation to systemic hyperthermia: impact on quality of life, neurohormonal and psychophysiological status of a person".

References

1. Birrer D., Morgan G. Psychological skills training as a way to enhance an athlete's performance in high density sports. Scandinavian Journal of Medicine & Science in Sports 2010: 20 (Suppl 2): 78-87