Yefremenko, A. ., Pyatisotskaya, S. ., Pavlenko, V. ., Shutieieva, T., Kraynik, Y. ., & Nasonkina, O. . (2021). Effectiveness of physical training of tennis players for competitions using elements of athletics. Slobozhanskyi Herald of Science and Sport, (4(84), 5–10. https://doi.org/10.15391/snsv.2021-4.001