Association between Fitness Level and Physical Match Demands of Professional Female Football Referees

The aim of this study was to examine the physical demands for elite female referees during competitive matches and to evaluate the relationship between match performance and fitness levels. Seventeen female elite field referees were fitness-tested (29.0 +/- 5.2 (SD) years, 163.8 +/- 6.7 cm, 54.0 +/- 5.1 kg, Yo-Yo Intermittent Recovery Test Level 1 (YYIR1) performance 1610 +/- 319 m) and were analysed during a total of 187 football matches. Global positioning systems (GPS) were used in this research. The physical demands were significantly lower (p < 0.05) in the second half of matches compared to the first half. Regarding the acceleration-related variables, the female referees revealed a higher number of high-intensity actions in the first half compared to the second half. However, higher low-intensity demands were observed for the females referees in the second half compared to the first half in the total number of accelerations (ACC) (similar to 70.48 n; ES = 0.61; p < 0.05) and decelerations (DEC) (similar to 71.11 n; ES = 0.62; p < 0.05); total number of ACC in zone 1 (similar to 85.27 n; ES = 0.70; p < 0.05) and DEC in zone 1 (Z1) (similar to 83.98 n; ES = 0.71; p < 0.05); and distance covered accelerating and decelerating in Z1. The distance covered in YYIR1 and the performance in the repeated sprint ability test correlated with the physical demands during matches for female football referees (p < 0.05). In conclusion, this study described the physical performance profile of female football referees and differences between the first and second halves of matches were observed. The results of this study revealed positive correlations between intermittent exercise fitness levels, the repeated sprint ability performance and match performance in female football referees, and thus this information can be implemented in their training plan designs.