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Article History

Received: 29 September 2021

Revised: 29 December 2021

Accepted: 18 March 2022

First Online: 13 October 2022

COMPLIANCE WITH ETHICAL STANDARDS

: <i>Ethical Standards</i>

: All studies were carried out in accordance with the principles of biomedical ethics, formed in the Declaration of Helsinki of 1964 and its subsequent updates, and approved by the local bioethical committee of the Velikiye Luki State Academy of Physical Education and Sports, Velikiye Luki.

: <i>Informed Consent</i>

: Each subject provided a voluntary written informed consent signed by him after being explained the potential risks and benefits, as well as the nature of the upcoming study.

: <i>Conflict of Interest</i>

: The authors declare no direct or potential conflict of interest related to the publication of this article.