Skopowska, A., Biernacki, M., Dekowska, M., Łukowicz, M., Łukasz, S., & Filarecka, A. (2018). Therapeutic procedures in shoulder impingement syndrome (SIS) for professionally active people: randomized research. Pedagogy and Psychology of Sport, 4(2), 26–42. https://doi.org/10.12775/PPS.2018.008