Janeckova, K. http://orcid.org/0000-0002-7990-6803
Hamrik, Z. http://orcid.org/0000-0002-5551-2033
Matusova, M.
Badura, P. http://orcid.org/0000-0003-0261-018X
Funding for this research was provided by:
Grantová Agentura České Republiky (18-24977S)
Technologická Agentura České Republiky (ÉTA TL01000335)
Ministerstvo Školství, Mládeže a Tělovýchovy (LTT18020)
Article History
Received: 13 October 2020
Accepted: 14 May 2021
First Online: 5 June 2021
Declarations
:
: The study was approved on 12th January 2017 by the Ethics Committee of the Faculty of Physical Culture, Palacky University Olomouc (reg. no. 7/2017). Participation in the survey was anonymous and voluntary. Written informed consent to participate was obtained from the parents/guardians of all the participants before their participation in the study.
: Not applicable.
: The authors declare that they have no competing interests.