Marci, Aurelia Cristina. “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, no. 2 (December 18, 2013): 9–16. Accessed March 27, 2026. https://www.uav.ro/jour/index.php/ajpa/article/view/169.