Malina, Robert M. http://orcid.org/0000-0002-9402-0648
Cumming, Sean P. http://orcid.org/0000-0003-1705-9642
Rogol, Alan D. http://orcid.org/0000-0002-7526-3142
Coelho-e-Silva, Manuel J. http://orcid.org/0000-0003-4512-7331
Figueiredo, Antonio J. http://orcid.org/0000-0001-6956-0514
Konarski, Jan M. http://orcid.org/0000-0003-1861-6201
Kozieł, Sławomir M.
Article History
First Online: 19 August 2019
Compliance with Ethical Standards
:
: No funding was provided to any of the authors for this review. The research on Portuguese youth soccer players used in several tables was supported in part by Fundação para Ciência e a Tecnologia.
: Robert Malina, Alan Rogol, Manuel Coelho-e-Silva, Antonio Figueiredo, Jan Konarski, and Sławomir Kozieł declare that they have no conflicts of interest. Sean Cumming has worked in research and consultancy roles with the Premier League, the English Football Association, the Lawn Tennis Association, and British Gymnastics.