System of exercises for the improvement of the rapid force in the lower train in balloonists in the male category 13-14. Sport and Science, [S. l.], v. 4, n. 2, p. 70–89, 2019. DOI: 10.34982/2223.1773.2019.V4.No2.005. Disponível em: https://cienciaydeporte.reduc.edu.cu/index.php/cienciaydeporte/article/view/104. Acesso em: 28 sep. 2025.