Relationship Between Agility and Speed With Explosive Power of Lower Limbs in Youth Football Players: Field and Laboratory-Based Assessment

The main objective of this study was to investigate the relationship between agility and speed and the explosive power of the lower limbs in youth football players. A total of 45 male athletes (ages 12–14) participated in this study. Anthropometric measurements (body height, body weight, and waist circumference) were recorded, and participants completed a series of motor performance tests. These included field-based assessments such as the agility 10x5m test, the agility T-test, sprint tests (10m and 20m), and the standing long jump. Laboratory-based assessments included the Leonardo Mechanography platform for measuring maximal force during a two-legged jump (S2LJ), and isometric strength tests using a dynamometric chair to determine maximal torque in both low-er limbs. Descriptive statistics and Pearson correlation analyses were used to examine the associations between agility and speed with explosive lower limb power. Results indicated significant correlations between agility tests and all explosive power measures, particularly between the agility T-test and both isometric torque and S2LJ force. Similarly, sprint performance (10m and 20m) showed strong inverse correlations with the standing long jump, S2LJ, and isometric torque, suggesting that greater explosive strength is associated with faster sprint times. These findings highlight the importance of developing Keywords youth football, agility, speed, explosive power, standing long jump

Abstract licence: CC BY

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