Faustino-da-Silva, Yuri V. http://orcid.org/0000-0002-7047-8881
Martinho, Diogo V. http://orcid.org/0000-0003-0825-4032
Coelho-e-Silva, Manuel J. http://orcid.org/0000-0003-4512-7331
Valente-dos-Santos, João http://orcid.org/0000-0003-0980-0269
Conde, Jorge http://orcid.org/0000-0002-2225-8569
Oliveira, Tomás G. http://orcid.org/0000-0002-8081-464X
Ronque, Enio R. V. http://orcid.org/0000-0003-3430-3993
Agostinete, Ricardo R. http://orcid.org/0000-0001-8420-7225
Fernandes, Rômulo A. http://orcid.org/0000-0003-1576-8090
Sherar, Lauren B. http://orcid.org/0000-0002-9942-5433
Funding for this research was provided by:
Fundação para a Ciência e a Tecnologia (uid/dtp/04213/2020)
Fundação para a Ciência e a Tecnologia (SFRH/BD/121441/2016)
Fundação de Amparo à Pesquisa do Estado de São Paulo (2018/09230-2; 2019/15959-8)
Article History
Received: 2 April 2020
Accepted: 12 October 2020
First Online: 26 October 2020
Ethics approval and consent to participate
: The research was approved by the <i>Ethics Committee</i> of the <i>University of Coimbra</i> [CE/FCDEF-UC/00122014]. A signed inter-institutional agreement with the <i>Portuguese Institute of Sports and Youth</i>. Participants voluntarily visited the <i>Center for Sports Medicine</i> as part of the required medical examination for registration in the <i>Portuguese Soccer Federation</i> (Law 204/2006; act 11/2012). Parents or legal guardians and the players provided written consent; the players were advised that their participation was voluntary and that they could withdraw from the study at any time.
: Not applicable.
: JVS is an editorial board member of BMC Pediatrics. All other authors declare that they do not have any competing interest.