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- Title
2022 DÜNYA KUPASI'NDA BAĞIL YAŞ ETKİSİNİN İNCELENMESİ.
- Authors
KARA, Mehmet; DEMİRSOY, İdris
- Abstract
The relative age effect (RAE) is considered a disadvantage in terms of competition in sports. This study was carried out to examine the RAE in the 2022 World Cup. There were 831 professional footballers in the study from 32 teams that qualified for the World Cup in Qatar. Information about the players is obtained from the official website of FIFA, which is open to access, from the official websites of the participating countries, and from a website where there is information about ultimately national teams and from transfermarkt. Chi-square and odds ratio tests were used to analyze the differences between expected and observed distributions according to the birth months of the football players. The expected frequencies are taken as 25% per quarter, based on the assumption that birth rates are evenly distributed throughout the year. Cramer's V was used to measure the effect size of the values found in the chi-square test. All analyzes were performed using the R programming. The RAE is seen in the teams participating in the 2022 World Cup, and there is a statistically significant difference between the quarter-year and half-year distributions of professional football players according to the months they were born. When professional football players are evaluated according to their positions; there is a statistically significant difference in terms of the quarter-year distribution of football players playing in the midfield position. There were no statistically significant differences in terms of the quarterly distribution of other positions (goalkeeper-defender-forward). There is a statistically significant difference in the half-year distribution of professional football players according to the positions, and the half-year distributions of the football players playing in the goalkeeper, defender and midfield positions. However, there was no statistically significant differences for striker position. In conclusion, there is a relative age effect even at the highest level in football.
- Subjects
QATAR; FEDERATION internationale de football association; SPORTS competitions; CHI-squared test; ODDS ratio; SUPINE position; BIRTH rate
- Publication
Online Journal of Recreation & Sports, 2023, Vol 12, Issue 2, p224
- ISSN
2146-9598
- Publication type
Article
- DOI
10.22282/tojras.1267530