The effect of using exercises on the (verti max) device to develop some biomechanical indicators and the accuracy of the offensive wall skill in youth volleyball. cbej [Internet]. 2022 Dec. 26 [cited 2025 Apr. 20];23(98):595-622. Available from: https://cbej.uomustansiriyah.edu.iq/index.php/cbej/article/view/8817