The effect of cross-training on the development of some physical abilities on the performance level of some basic volleyball skills Experimental research on a sample of Soran volleyball club juniors. cbej [Internet]. 2023 Apr. 16 [cited 2026 Aug. 3];29(118):455-33. Available from: https://cbej.uomustansiriyah.edu.iq/index.php/cbej/article/view/10214