Effect of a change in selection year on success in male soccer players

  title={Effect of a change in selection year on success in male soccer players},
  author={Werner F. Helsen and Janet L. Starkes and Jan van Winckel},
  journal={American Journal of Human Biology},
Since 1997 and following the guidelines of the International Football Association, the Belgian Soccer Federation has used January 1st as the start of the selection year. Previously, August 1 was the start. This shift prompted an investigation of changes in birth‐date distributions throughout youth categories for 1996–1997 compared to the 1997–1998 competitive years. Birth dates were considered for national youth league players, ages 10–12, 12–14, 14–16, and 16–18 years. Kolmogorov Smirnov tests… 

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