Shevchenko, Oleg, and Marina Jagiello. “Effective Strategies for Controlling Physical Fitness in 7-8 Year Old Tennis Players for Optimal Health and Performance”. Pedagogy of Health 2, no. 1 (May 30, 2023): 19–24. Accessed July 17, 2026. https://healtheduj.com/index.php/ph/article/view/17.