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Authors
Doroniewicz, Iwona
Ledwoń, Daniel J.
Bugdol, Monika
Kieszczyńska, Katarzyna
Affanasowicz, Alicja
Latos, Dominika
Matyja, Małgorzata
Myśliwiec, Andrzej
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Article History
Received: 9 January 2024
Accepted: 22 July 2024
First Online: 31 July 2024
Declarations
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: The study was approved by the Biomedical Research Ethics Committee (No. 5/2018) and in accordance with the Declaration of Helsinki. The study was approved by the Bioethics Committee of Research of the Jerzy Kukuczka Academy of Physical Education in Katowice. All parents of the participants gave written informed consent before data collection began.
: The parents provided written consent for pictures to be used in research publications.
: The authors declare no competing interests.
