What Differentiates Elite, Sub-Elite, and Amateur Young Soccer Players? A Comparative Analysis of Match-Play Locomotor Demands

This observational cross-sectional study compared match-play locomotor demands among youth soccer players competing at three competitive levels (elite, sub-elite, and amateur) within the same club. Fifty-five male U13–U14 soccer players participated in the study (elite, n = 19; sub-elite, n = 17; amateur, n = 19). Ten official matches were analyzed during the 2024–2025 season (four elite, three sub-elite, and three amateur matches), with external load monitored using 10-Hz GPS devices. Locomotor variables were compared among competitive levels using multivariate and univariate analyses of covariance (MANOVA/ANCOVA), with Peak Height Velocity (PHV) as a continuous covariate, followed by post-hoc comparisons. No significant between-group differences were observed for total distance covered or distances performed at low-to-moderate running speeds. In contrast, differences became more apparent at higher running velocities. Elite players covered greater absolute distances at high-speed thresholds, particularly at velocities ≥24 km·h−1, and achieved higher maximal speeds and absolute sprint distances than sub-elite and amateur players. Differences were also observed in acceleration–deceleration profiles, with sub-elite players performing a greater number of total acceleration and deceleration events, whereas elite players achieved higher maximal acceleration and deceleration values and covered greater distances within high-intensity acceleration zones. Conversely, while impact-related measures showed limited ability to differentiate among competitive levels, multi-planar aggregated load metrics—specifically Player Load and its directional vector components—robustly discriminated between playing tiers once adjusted for biological maturation. Overall, the findings indicate that high-intensity locomotor variables, particularly absolute high-speed running and maximal speed, differed more consistently among the three competitive groups than total movement volume or impact-related measures. Crucially, these findings reflect an independent effect of competitive standard rather than mere differences in developmental status. Locomotor demands may therefore provide useful complementary information for profiling youth soccer players, offering a robust framework for competitive differentiation that can be further validated in future maturity-matched and longitudinal studies.