Authors
Wiesław Chwała
Department of Biomechanics of the University of Physical Education, Kraków, Poland
Robert Walaszek
Department of Recreology and Biological Regeneration of the University of Physical Education, Kraków, Poland
Katarzyna Burdacka
Department of Recreology and Biological Regeneration of the University of Physical Education, Kraków, Poland
Marcin Burdacki
Med Coach, Non-public Continuing Education Institution, Kraków, Poland