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      Age-related differences in acceleration, maximum running speed, and repeated-sprint performance in young soccer players.

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          Abstract

          We investigated age-related differences in the relationships among acceleration, maximum running speed, and repeated-sprint performance in 61 highly trained young male soccer players (Under 14, n = 14; Under 16, n = 22; Under 18, n = 25). We also examined the possible influence of anthropometry (stature, body mass, fat-free mass) and biological maturation (age at peak height velocity) on performance in those three sprint-running qualities. Players were tested for 10-m sprint (acceleration), flying 20-m sprint (maximum running speed), and 10 × 30-m sprint (repeated-sprint performance) times. Correlations between acceleration, maximum running speed, and repeated-sprint performance were positive and large to almost perfect (r = 0.55-0.96), irrespective of age group. There were age-based differences both in absolute performance in the three sprint-running qualities (Under 18 > Under 16 > Under 14; P < 0.001) and when body mass and fat-free mass were statistically controlled (P < 0.05). In contrast, all between-group differences disappeared after adjustment for age at peak height velocity (P > 0.05). The large correlations among acceleration, maximum running speed, and repeated-sprint performance in all age groups, as well as the disappearance of between-group differences when adjusted for estimated biological maturity, suggest that these physical qualities in young highly trained soccer players might be considered as a general quality, which is likely to be related to qualitative adaptations that accompany maturation.

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          Author and article information

          Journal
          J Sports Sci
          Journal of sports sciences
          Informa UK Limited
          1466-447X
          0264-0414
          Mar 2011
          : 29
          : 5
          Affiliations
          [1 ] Sport Science Department, ASPIRE Academy for Sports Excellence, Doha, Qatar. amendezvillanueva@yahoo.com
          Article
          932218306
          10.1080/02640414.2010.536248
          21225488
          2c880af5-e42c-49b0-87b3-f8d044927bee
          History

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