Maksimov D, Anoshin A, Kotlyachkova N, Merzlyakova A. Popular physical education and sports in the volga federal district: progress analysis . TPPC [Internet]. 2022 Jan. 3 [cited 2025 Dec. 5];(11):38-40. Available from: http://www.tpfk.ru/index.php/TPPC/article/view/42