USING CARDIO TRAINING TOOLS TO IMPROVE THE PHYSICAL CONDITION OF 14-15 YEAR OLD ATHLETES. Physical Culture and Sport: Scientific Perspective, [S. l.], n. 3, p. 211–218, 2025. DOI: 10.31891/pcs.2025.3.25. Disponível em: https://pcs.khmnu.edu.ua/index.php/pcs/article/view/515. Acesso em: 27 jan. 2026.