ISOKINETIC PROFILES AND REFERENCE VALUES OF PROFESSIONAL SOCCER PLAYERS

ABSTRACT Introduction: Isokinetics is a tool commonly used in professional soccer. There ongoing debate among researchers as to the isokinetic reference values player should have. Objectives: To determine absolute peak torque (PT) and average work of soccer players relation their positions on field, establish for these variables. Methods: Purposeful sampling was select 289 players. The sample included 32 goalkeepers, 100 defenders, 98 midfielders, 59 strikers. participants were measured preseason. asked perform 10-minute warm-up an exercise bike, then 5 repetitions at low speed, 10 medium 25 high with 30 40-s rest between each set repetitions. contraction method concentric-concentric dynamometer Isomed 2000. Results: age, weight, height 21.9 years, 74.3 kilograms, 1.8 meters, respectively. goalkeepers presented higher PT 3 speeds, 180°/s 240°/s defenders midfielders. strikers Absolute shown established. Conclusions: that showed greatest differences favor other positions. described player's position field. This study resulted creation health professionals working players, providing field can be benchmarks, by professionals, optimize players’ performance. Level evidence II, Prospective comparative study.