Kałużny, K., Kochański, B., Szadkowska, R., Kałużna, A., Cichosz, M., Zukow, W., Hagner, W., & Hagner-Derengowska, M. (2020). The assessment of the relation between the transverse abdominal muscle (TRA) and the occurrence of injuries and contusions at university students. Pedagogy and Psychology of Sport, 6(3), 33–43. https://doi.org/10.12775/PPS.2020.06.03.003