Sieroń, Adrian, Gabriela Kołodyńska, and Paulina Rostojek. “Comparative Analysis of Changes in Body Composition of Young Volleyball Players During the Season”. Journal of Education, Health and Sport 8, no. 9 (September 10, 2018): 651–657. Accessed April 18, 2025. https://apcz.umk.pl/JEHS/article/view/5948.