Marchenko, Svitlana, and Bahtiiar Satdyiev. “Effectiveness of Using Active Games for Strength Development in 10-Year-Old Boys at the Initial Training Stage in Kyokushin Karate”. Teorìâ ta Metodika Fìzičnogo Vihovannâ 21, no. 1 (March 25, 2021): 84-89. Accessed July 26, 2021. https://tmfv.com.ua/journal/article/view/1482.