K. Shaqiri, F. Mamuti, and B. Sulejmani, “EFFECTS OF BODY COMPOSITION AND HIGH-SPEED RELATED TESTS ON THE CHANGE-OF-DIRECTION SPEED IN U15 SOCCER PLAYERS: The Body Composition and High-Speed Related test effects on the Change-of-Direction Speed”, KOSALB, vol. 1, no. 1, pp. 1–7, Dec. 2022.