Lower-Limb Muscle Strength, Anterior-Posterior and Inter-Limb Asymmetry in Professional, Elite Academy and Amateur Soccer Players

Given the importance of lower-limb strength and balance in soccer players its relationship with injury prevention performance, present study compared quadriceps hamstrings strength, conventional (H<sub>conc</sub>:Q<sub>conc</sub>), functional (H<sub>ecc</sub>:Q<sub>conc</sub>) hamstrings-to-quadriceps ratio inter-limb asymmetry professional, elite academy amateur male players. In this cross-sectional study, two hundred-six (professional = 75, 68, amateurs 63) volunteered to participate. Quadriceps isokinetic peak torque was investigated at 60<sup>°</sup><sub>.</sub>s<sup>-1</sup> both concentric eccentric modality 300<sup>°.</sup>s<sup>-1</sup> modality. The H<sub>conc</sub>:Q<sub>conc</sub>, H<sub>ecc</sub>:Q<sub>conc</sub> were then calculated. Professional presented greater than (effect size from small moderate) (moderate very large). Both H<sub>conc</sub>:Q<sub>conc</sub> professional (small moderate). Overall, large) (trivial findings provide coaches medical staffs normative muscle data on Overall could be used evaluate possible inference performance. poorly differentiates between background offers limited prediction for