UDC

616.8-057.36+616.8-07

DOI

10.17238/issn2542-1298.2019.7.2.178

Authors

Aleksandra E. Shcherbakova*, Marina A. Popova*, Rinat R. Karimov**, Sergey N. Gritskov***
*Surgut State Pedagogical University (Surgut, Khanty-Mansi Autonomous Okrug – Yugra, Russian Federation)
**Surgut District Hospital (Surgut, Khanty-Mansi Autonomous Okrug – Yugra, Russian Federation)
***Training Centre of the Federal Fire Service in the Khanty-Mansi Autonomous Okrug – Yugra (Surgut, Khanty-Mansi Autonomous Okrug – Yugra, Russian Federation)
Corresponding author: Aleksandra Shcherbakova; address: ul. Artema 9, korp. 2, Surgut, 628400, Khanty-Mansiyskiy avtonomnyy okrug – Yugra, Russian Federation; e-mail: la_lune-4@bk.ru

Abstract

This paper studied the functional state of the autonomic nervous system (ANS) and central nervous system (CNS) in 72 firefighters living in the Khanty-Mansi Autonomous Okrug – Yugra (Russia). Their mean age was 26.3 ± 0.33 years. The state of the CNS was evaluated using heart rate variability (HRV) data according to cardiorhythmogram taken at rest and during active orthostatic test. Orthostatic testbased evaluation of the body’s adaptive capacity provides information about the functioning of the physiological system and includes indicators of the current functional state and adaptation reserves. The functional state of the CNS was assessed by the method of simple visual-motor reaction. In order to obtain more detailed information on the features and state of the CNS, we applied criteria developed by T.D. Loskutova (system functional level (SFL), reaction stability and level of functionality) and Whipple’s exact solution. After the orthostatic test, the subjects showed a statistically significant decrease in total HRV and a marked inhibition of activity and reactivity of the parasympathetic nervous system. We found reduced adaptation reserves in 43 % of the subjects. Decreased reactivity of the parasympathetic nervous system during the orthostatic test was revealed in 22 % of the firefighters. Among the subjects we identified those with low general functional state of the CNS (43 % by the SFL criterion) and slightly reduced working capacity (83 % by the SFL criterion), which indicates poor functional capacity of the CNS. Assessment of the functional state of the ANS and CNS allows us to identify in a timely manner the risk groups for psychosomatic disorders among specialists of dangerous professions living in the Khanty- Mansi Autonomous Okrug – Yugra and to develop adequate individual rehabilitation programmes.

Keywords

autonomic nervous system, heart rate variability, central nervous system, orthostatic test, visual-motor reaction, firefighters, Khanty-Mansi Autonomous Okrug – Yugra

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