Bedarkov K.I., Shilko V.G. IMPROVING THE EFFECTIVENESS OF COMPETITIVE ACTIVITY OF FOOTBALL PLAYERS AGED 14-15 YEARS ON THE BASIS OF THE DEVELOPMENT OF POWER ABILITIES PROPER. TPPC [Internet]. 2023 Aug. 6 [cited 2024 Dec. 22];(8):26-8. Available from: http://tpfk.ru/index.php/TPPC/article/view/702