Funding for this research was provided by:
Narodowe Centrum Nauki (DEC-2011/03/B/NZ7/00588)
Received: 30 June 2020
Accepted: 1 October 2020
First Online: 15 October 2020
Ethics approval and consent to participate
: The study was approved by the Review Board of the University School of Physical Education in Wroclaw. All subjects provided written informed consent before participating.
: Written informed consent for publication of their clinical details and/or clinical images was obtained from the Subjects.
: The authors declare that they have no competing interests.