Received: 9 February 2021
Accepted: 17 May 2021
First Online: 31 May 2021
: Participants were informed about the risks and provided their written informed consent. The study was carried out in accordance with the Code of Ethics of the World Medical Association (Declaration of Helsinki) for experiments involving humans. The project was approved by the Senate Ethics Committee for Scientific Research of the Józef Piłsudski University of Physical Education in Warsaw, protocol number SKE 01–09/2017.
: Not applicable.
: The authors declare that there is no other conflict of interest to disclose.