1. Exercise and Sport Sciences, Faculty of Health Sciences, Francisco de Vitoria University, Madrid, Spain;
2. Exercise Physiology Laboratory, Camilo José Cela University, Madrid, Spain;
3. Department for Doping Control, Spanish Agency for Health Protection in Sport, Madrid, Spain;
4. Department of Education, Spanish Agency for Health Protection in Sport, Madrid, Spain;
5. Centre for Sport Studies, Rey Juan Carlos University, Madrid, Spain