YERMISHEV, O. V. The influence of the seasons of the year on the autonomous nervous system balance and the functional health of men of different age groups. Journal of Education, Health and Sport. Online. 28 February 2020. Vol. 10, no. 2, pp. 241-252. [Accessed 7 July 2025]. DOI 10.12775/JEHS.2020.10.02.029.