Karim Mustafa, N, Ahmed Assi M. The Effect of Physical Stiffness Exercises on Some of the Physical Abilities of Young Handball Players. BERJ [Internet]. 2022 Dec. 1 [cited 2025 Oct. 26];18(4):675-83. Available from: https://moss.uomosul.edu.iq/index.php/berj/article/view/39149