1 Department of Sport Biology, Research Centre in Physical Activity, Health and Leisure (CIAFEL), Faculty of Sport, University of Porto, Rua Dr. Plácido Costa 91, 4200-450 Porto, Portugal.
2 Sezione di Fisiologia, Dipartimento delle Scienze Biologiche, Università degli Studi di Napoli "Federico II", Via Mezzocannone 8, 80134 Napoli, Italy.
3 Department of Applied Physiology and Kinesiology, College of Health and Human Performance, University of Florida, P.O. Box 118205, Gainesville, FL 32611, USA.
4 VM Molecular Biosciences, University of California, Davis, CA 95616, USA.