Received: 23 March 2021
Accepted: 12 August 2021
First Online: 22 August 2021
: Parents/guardian informed consent for all players involved in this investigation were obtained. The study was conducted according to the Declaration of Helsinki (2013), and was approved beforehand by the Ethics Committee of Clinical Research from the Government of Aragón (CP19/039, CEICA, Spain).
: No individual or indemnifiable data is being published as part of this manuscript.
: The authors declare that they have no competing interests.