“Validity of Specific Leg Muscle Strength Test Instrument For Volleyball (Volleyball Squat Max Strength Test)”, Compet. J. Pendidik. Kepelatihan Olahraga, vol. 17, no. 2, pp. 1241–1249, Aug. 2025, Accessed: Mar. 19, 2026. [Online]. Available: https://competitor.idjournal.eu/index.php/competitor/article/view/274