Authors
Krzysztof Sas-Nowosielski
k.sas-nowosielski@awf.katowice.pl
Jerzy Kukuczka Academy of Physical Education in Katowice, Faculty of Physical Education, Department of Pedagogy and Psychology, Katowice, Poland
Aleksandra Budzisz
Jerzy Kukuczka Academy of Physical Education in Katowice, Faculty of Physical Education, Katowice, Poland