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The Relative Age Effect in Spanish Female Soccer Players. Influence of the Competitive Level and a Playing Position.

Sedano S, Vaeyens R, Redondo JC - J Hum Kinet (2015)

Bottom Line: Only in the lowest level was age distribution not significantly different from that of the general population.It was also observed that at some playing positions the birth-date distributions were significantly biased.It could be concluded that in the current structure of Spanish female soccer there is a relative age effect, probably due to the early processes of talent identification.

View Article: PubMed Central - PubMed

Affiliation: Laboratory of Physiology. European University Miguel de Cervantes, Valladolid, Spain.

ABSTRACT
The purposes of the study were to examine relative age effects (RAEs) in Spanish female soccer and to identify the influence of a playing position. The sample comprised all female players (n=4035) of five different competitive levels in the 2010-2013 seasons: First, Second and Third divisions (n=936, n=1711 and n=870, respectively), and National and Regional (n=232 and n=286, respectively) teams were included. Differences between the observed and expected birth-date distributions were tested based on data from the general Spanish population, using the chi-square statistic followed up by calculating odds ratios and 95% confidence intervals. Results revealed that the birth-date distributions of almost all groups of football players showed an overrepresentation of players born in the first quartile. Only in the lowest level was age distribution not significantly different from that of the general population. Moreover, the RAE risk progressively increased with a higher level of involvement. It was also observed that at some playing positions the birth-date distributions were significantly biased. That was the case for goalkeepers and defenders. It could be concluded that in the current structure of Spanish female soccer there is a relative age effect, probably due to the early processes of talent identification.

No MeSH data available.


Quarterly distribution of birth dates for the four subgroups of players in which the separate chi-square analyses revealed that the distribution differed significantly from that of the general population. (p<0.05)
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f2-jhk-46-129: Quarterly distribution of birth dates for the four subgroups of players in which the separate chi-square analyses revealed that the distribution differed significantly from that of the general population. (p<0.05)

Mentions: Table 2 shows the distributions of births by quarter for the five subgroups and the Spanish general population. Separate chi-square analyses revealed that the birth-date distributions of almost all groups of football players differed significantly from that of the general population. Q1 and Q2 are generally over-represented (Figure 2). Only the birth-date distribution in TDG is not significantly different from that of the general population.


The Relative Age Effect in Spanish Female Soccer Players. Influence of the Competitive Level and a Playing Position.

Sedano S, Vaeyens R, Redondo JC - J Hum Kinet (2015)

Quarterly distribution of birth dates for the four subgroups of players in which the separate chi-square analyses revealed that the distribution differed significantly from that of the general population. (p<0.05)
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4519203&req=5

f2-jhk-46-129: Quarterly distribution of birth dates for the four subgroups of players in which the separate chi-square analyses revealed that the distribution differed significantly from that of the general population. (p<0.05)
Mentions: Table 2 shows the distributions of births by quarter for the five subgroups and the Spanish general population. Separate chi-square analyses revealed that the birth-date distributions of almost all groups of football players differed significantly from that of the general population. Q1 and Q2 are generally over-represented (Figure 2). Only the birth-date distribution in TDG is not significantly different from that of the general population.

Bottom Line: Only in the lowest level was age distribution not significantly different from that of the general population.It was also observed that at some playing positions the birth-date distributions were significantly biased.It could be concluded that in the current structure of Spanish female soccer there is a relative age effect, probably due to the early processes of talent identification.

View Article: PubMed Central - PubMed

Affiliation: Laboratory of Physiology. European University Miguel de Cervantes, Valladolid, Spain.

ABSTRACT
The purposes of the study were to examine relative age effects (RAEs) in Spanish female soccer and to identify the influence of a playing position. The sample comprised all female players (n=4035) of five different competitive levels in the 2010-2013 seasons: First, Second and Third divisions (n=936, n=1711 and n=870, respectively), and National and Regional (n=232 and n=286, respectively) teams were included. Differences between the observed and expected birth-date distributions were tested based on data from the general Spanish population, using the chi-square statistic followed up by calculating odds ratios and 95% confidence intervals. Results revealed that the birth-date distributions of almost all groups of football players showed an overrepresentation of players born in the first quartile. Only in the lowest level was age distribution not significantly different from that of the general population. Moreover, the RAE risk progressively increased with a higher level of involvement. It was also observed that at some playing positions the birth-date distributions were significantly biased. That was the case for goalkeepers and defenders. It could be concluded that in the current structure of Spanish female soccer there is a relative age effect, probably due to the early processes of talent identification.

No MeSH data available.