Efecto de edad relativa en la Liga Nacional de Básquetbol de Chile

Revista Ciencias de la Actividad Física Pub Date : 1900-01-01 DOI:10.29035/RCAF.22.1.7

Hernán Andrés Salinas Molina

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Abstract

The objective of the study was to verify the existence of overrepresentation of players born in the first part of the year or Relative Age Effect (RAE), in Chilean elite men's basketball. The distribution by month, quarter, and semester of players’ birthdates were obtained from the official rosters of the National Basketball League of Chile (LNB) for the 2019-20 season. These were compared to the distribution of births in Chile between 1977 and 2005. The statistical significance of the differences between expected and observed distribution was verified using the 2 test (monthly and quarterly) and a binomial distribution (semi-annual). The three analyses yielded significant differences between the expected and observed distribution, with an overrepresentation of those born in the first semester, first quarter, and January and an underrepresentation of those born in the second semester, fourth quarter, and December. It is concluded that there is sufficient evidence to confirm the existence of RAE in LNB. To reduce RAE, measures are proposed to educate coaches about the effects of age differences on performance and the establishment of mobile cut-off dates during the competitive season.

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智利国家篮球联盟的相对年龄效应

本研究的目的是验证在智利精英男子篮球中，在今年上半年出生的球员或相对年龄效应(RAE)的存在。根据2019-20赛季智利国家篮球联盟(National Basketball League of Chile, LNB)官方花名册，按月、季度和学期划分球员出生日期分布。这些数据与智利1977年至2005年间的出生分布进行了比较。使用2检验(月度和季度)和二项分布(半年)验证预期分布与观测分布之间差异的统计显著性。这三种分析得出了预期分布和观察分布之间的显著差异，在第一学期、第一季度和1月份出生的人代表性过高，而在第二学期、第四季度和12月份出生的人代表性不足。结论:有足够的证据证实LNB中存在RAE。为了减少RAE，建议采取措施教育教练年龄差异对表现的影响，并在比赛季节建立移动截止日期。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Revista Ciencias de la Actividad Física

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