1 School of Sport and Exercise Sciences, Faculty of Medicine and Surgery, University of Rome Tor Vergata, Rome 00173-RM, Italy.
2 Fitness Training and Biomechanics Laboratory, Technical Department, Italian Football Association, Coverciano 00198, Italy.
3 Laboratory of Medical Investigation, LIM-18, Endocrinology Division, School of Medicine, University of São Paulo, São Paulo 01246-903, Brazil.
4 Department of Sports Science and Clinical Biomechanics, Sport and Health Sciences Cluster (SHSC), University of Southern Denmark, Odense 5230-M, Denmark.
5 Sport and Health Sciences, Faculty of Life and Environmental Sciences, University of Exeter, Exeter, EX12LU, UK.
6 James R. Urbaniak, MD, Sport Sciences Institute, Duke University Medical Center, Durham, NC 27708, USA.