Kucharczuk-Kopycińska, M., Krajewski, S. and Krajewska, M. (2016) “Assessment and affects hamstrings contracture on the formation of posture defects in children of preschool age”, Journal of Education, Health and Sport, 6(13), pp. 135–145. Available at: https://apcz.umk.pl/JEHS/article/view/4165 (Accessed: 27 February 2025).