Relative age and dropout in French male soccer

Abstract

The aim of this study was to examine the birthdates distribution of French male soccer players (n = 363,590) who dropped out during or after the 2006-2007 season, to test whether the Relative Age Effect (RAE) is linked to the dropout behaviour. An over-representation of players born late in the competitive year was found among dropouts, from the U9 to the U18 age categories, whereas their counterparts born earlier in the year were under-represented.The distortion of the distribution was particularly important for the extreme quarters of the competitive year, and in the U13 and U15 categories. This biased distribution was however not confirmed regarding the U7 category. Finally, regarding the adult category, an unbiased distribution of dropouts was found as hypothesized. Practical implications to avoid the negative consequences of RAE are advanced.-3 -

Relative age effect in Turkish soccer

“…Other studies conducted on the RAE phenomenon in various sport branches (1,21) and soccer (4,6,8,9,10,12,14,15,16,19,29,30) provide similar findings, that is players who were born in the first months or in the first quarter of the same year present higher distribution in selection to of formation of teams.…”

“…Delorme et al (8) studied the relationship between dropouts and birth-month among French male soccer players, and found that in lower age categories (U-9, U-11, U-13, U-15 and U-18), players who were born in the last quarter of the year had a higher rate of dropouts. They reported a high esoteric distribution in especially in U-13 and U-15 categories, which refer to adolescence in male individuals.…”

Efectos De La Edad Relativa en El Proceso De Selección Nacional De Triatletas / Relative Age Effect on National Selection Process in Triathlon

“…Sin embargo, los errores de este mecanismo de balanceo se reflejan en la posible diferencia de edad entre dos deportistas que se encuentran compitiendo en la misma categoría, pudiendo extenderse hasta 23 meses si no hubieran nacido en el mismo año, o hasta 11 meses en el caso de que nacieran en el mismo año (Delorme et al, 2010a). Campo (2013) manifestó como precisamente el sistema de categorías cada dos años establecido en muchos deportes actúa como un potenciador del RAE.…”

“…La literatura científica indica como el RAE está presente a lo largo de los procesos de selección (Costa et al, 2013;Mujika et al, 2009) o abandono (Delorme et al, 2010a) durante el período de instrucción y desarrollo deportivo, sugiriendo una posible pérdida de atletas capacitados. Por tanto, su existencia supone un problema evidente en la aplicación de programas de detección de talentos dado que los procesos de identificación podrían excluir a individuos sólo debido a este factor.…”

A eficiência do comportamento tático e a data de nascimento influenciam a performance tática de jogadores de futebol da categoria sub-11?

“…is advantage of the players born on the rst months of the year, compared with those born on the end of the year, is known as the relative age e ect (RAE) 6,8 .…”