Marci, A. C. (2013) “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, (2), pp. 9–16. Available at: https://www.uav.ro/jour/index.php/ajpa/article/view/169 (Accessed: 27March2026).