Maulana, Alzi, Nurhayati, Ummy A’isyah, AND Norlinta, Siti Nadhir Ollin. " Enhancing Lower Limb Power in Volleyball Players: Countermovement Jump vs. Calf Raise – A Controlled Experimental Study" Majalah Ilmiah Fisioterapi Indonesia [Online], Volume 13 Number 1 (31 March 2025)