Author(s): PETROVIC, M., GISLADOTTIR, T., HAFSTEINSSON, T., Institution: UNIVERSITY OF ICELAND, Country: ICELAND, Abstract-ID: 445

INTRODUCTION:
This study builds on the growing recognition that football refereeing is a physically demanding role requiring repeated high-intensity efforts, rapid decision-making, and efficient movement mechanics throughout a match. Despite this, limited scientific attention has been directed toward understanding the specific biomechanical and performance characteristics that differentiate referees competing at different competitive levels. The purpose of this study was to examine biomechanical and performance-related differences between elite and non-elite football referees.
METHODS:
Participants completed a comprehensive battery of physical and biomechanical assessments on-field and in the lab, including sprint performance, change-of-direction ability, jump performance, and measures of muscular strength.
RESULTS:
Independent samples t-tests revealed significant between-group differences in several key performance variables. Elite referees were significantly younger than non-elite referees (p < .001) and demonstrated superior sprint performance over 20 m, 40 m, and 60 m distances (p = .025, .011, and .005, respectively). Measures of agility also favored elite referees, with significantly faster times in the 5-0-5 change-of-direction test (p < .001) and split Y-agility test (p = .005). Additionally, elite referees exhibited greater jump height (p = .016), higher velocity at peak power (p = .010), and greater vertical velocity at takeoff (p = .016). Body height was significantly greater in elite referees (p = .010); however, no significant differences were observed in body mass or in the majority of strength- and force-related variables, including Nordic hamstring strength, hip and knee strength, and rate of force development (RFD).
CONCLUSION:
These findings indicate that speed, agility, and explosive power—rather than maximal strength—are key physical attributes distinguishing elite from non-elite football referees. The younger age profile and superior neuromuscular performance of elite referees highlight the importance of targeted conditioning programs emphasising high-intensity and explosive capacities, particularly for referees aiming to progress to elite levels.
This study provides novel biomechanical insight into the physical demands of football refereeing and offers evidence-based guidance for referee development, talent identification, and training program design.