Zapovitriana, E.B., G.V. Korobeynikov, and L.G. Korobeinikova. “Peculiarities of Vegetative Regulation of Heart Rate in Wrestlers of Different Age Groups”. Pedagogics, psychology, medical-biological problems of physical training and sports 19, no. 4 (April 28, 2015): 22–26. Accessed March 29, 2024. https://sportpedagogy.org.ua/index.php/PPS/article/view/191.