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Possible diff erences in the physical values related to characteristics of the age group and the play positions in soccer. The aims to analyze the isokinetic muscle strength profi les, anthropometric, neuromuscular and cardiovascular characteristics, comparing age, categories and play positions. 105 players divided into U-17, U-20, Professional and six play positions. The isokinetic test, anthropometric measurements, counter-movement jump test with arms and yo-yo intermittent recovery test were performed. Signifi cant diff erences (p<0.05) were found in the professionals compared to U-20 and U-17 for body mass, height, body fat, VO2max and for U-17 in relation to professionals in the isokinetic test. Signifi cant diff erences were also found between play positions (p<0.05) for body mass, height, VO2max and isokinetic. Soccer athletes playing in diff erent positions have diff erent profi les of physiological characteristics and U-17 have a lower level of strength compared to professionals, suggesting the importance of training specifi city.

Physiological Profile of Brazilian Elite Soccer Players: Comparison between U-17, U-20 and professionals