IS PARTICIPATION IN PHYSICAL EDUCATION CLASSES RELATED TO PHYSICAL ACTIVITY AND SEDENTARY TIME IN ADOLESCENT BOYS AND GIRLS? 29. lipnja 2021. | Franjo Lovrić Adam Kantanista1, Joanna Borowiec1 1 Department of Physical Education and Lifelong Sports, Poznan University of Physical Education, Poznan, Poland DOI. 10.51371/issn.1840-2976.2021.15.1.6