1. Fitness training and biomechanics laboratory, Technical Department, Italian Football Federation (FIGC), Coverciano, Italy
2. Italian Football Referees Association (AIA), Technical Department, Rome, Italy
3. University of Rome Tor Vergata, Rome, Italy
4. Schulthess Clinic Human Performance Lab, Zurich, Switzerland
5. Refereeing Department, Asian Football Confederation, Kuala Lumpur, Malaysia
6. University of Pisa, Pisa, Italy
7. Research Center in Sports Sciences, Health Sciences and Human Development, CIDESD, University Institute of Maia, ISMAI, Maia, Portugal
8. Department of Sports Science and Clinical Biomechanics, SDU Sport and Health Sciences Cluster (SHSC), University of Southern Denmark, Odense, Denmark