À propos de cet article
Publié en ligne: 03 juin 2019
Pages: 1 - 5
Reçu: 10 nov. 2018
Accepté: 11 févr. 2019
DOI: https://doi.org/10.2478/pcssr-2019-0008
© 2019 Ejgil Jespersen, published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.
Ejgil Jespersen
Józef Piłsudski University of Physical Education in Warsaw,
Department of Health ScienceBiala Podlaska, Poland