Elżbieta Biernata, Adrian Lubowiecki-Vikukb, Dawid Majcherekc, Adam Kantanistad
aInstitute of International Economic Policy, SGH Warsaw School of Economics, Poland
bInstitute of Management, SGH Warsaw School of Economics, Poland
cDepartment of International Management, SGH Warsaw School of Economics, Poland
dDepartment of Physical Education and Lifelong Sports, Poznan University of Physical Education, Poland