This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Marta Pokorska
Department of Pedagogy and Psychology, Chair of Humanities and Social Sciences, Faculty of Physical Education,
Józef Piłsudski University of Physical EducationWarsaw, Poland
Marcin Czechowski
Department of Pedagogy and Psychology, Chair of Humanities and Social Sciences, Faculty of Physical Education,
Józef Piłsudski University of Physical EducationWarsaw, Poland