Grabara, Małgorzata
Sadowska-Krępa, Ewa
Article History
Received: 6 June 2021
Accepted: 25 August 2021
First Online: 16 September 2021
Declarations
:
: The subjects were informed of the study goals and test protocols before giving their signed informed consent for participation. The study protocol received approval from the Local Bioethics Committee (certificate of approval No. KB/02/12) of the Jerzy Kukuczka Academy of Physical Education in Katowice (Poland) according to the principles and policies of the Declaration of Helsinki.
: Not applicable.
: The authors declare no conflict of interest.