1. Giuseppe Coratella 1, Francesco De Vita 2, Giovanni Brignardello,2, Lorenzo Bortolan,1,3, Marco Beato,1, Giuliano Corradini,2, Nicoletta Rinaldo 1, Federico Schena 1,3 1. Department of Neuroscience and Kinesiology, University of Verona, Verona. 2. Technical & Medical Staff, AC ChievoVerona, Verona. 3. CeRiSM, University of Verona, Rovereto

2. Evaluate lower limbs strength professional Vs. youth team; Lateral and anterior-posterior muscular imbalances; Correlate strength to jump performance. Aim of the study

3. Results ProfessionalYoungDifferenceSig. Quadriceps (N/m) 539±73495±6044±130,001 Hamstrings (N/m) 338±72337±451±12n.s. H/Q ratio0,62±0,10,68±0,070,06±0,020,001 No lateral differences in quadriceps and hamstrings peak torque in both groups; Single limb jump correlated with quadriceps strength (0,630 to 0,724, p< 0,05 ).

4. Discussion Laterality does not reflect strength (Pietrosimone 2012); Quadriceps strength influence jump performance (Wisloff, 2004); Hamstrings should be reinforced in professional team (Delextrat, 2011).