MARCI, A. C. THE IMPORTANCE OF COMBINING MUSCULAR CONTRACTIONS DUTY FOR STRENGTH TRAINING, IN THE GAME OF TENNIS, FOR 11-12 YEAR-OLDS. Arena-Journal of Physical Activities, [S. l.], n. 2, p. 9–16, 2013. Disponível em: https://www.uav.ro/jour/index.php/ajpa/article/view/169. Acesso em: 27 mar. 2026.