Al-Lami, Hikmat Adil Aziz, Yousif Hussein Abbas, and Hussein Abdulhadi Mahdi Al-Raheem. 2020. “The Effect of Exercises by Using VertiMax Device in the Development of Explosive Strength and Defensive Blocking for Handball Players”. Journal of Human Sport and Exercise 15 (3proc):S966-S972. https://www.jhse.ua.es/article/view/2020-v15-n3-proc-exercises-vertimax-device-explosive-strength-de.