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Abstract：
The relative age effect (RAE) has been the focus of numerous studies; however, there are still fewer studies in women\'s sports than in men\'s sports. In this study, all female players (N = 2,255) who participated in Chinese junior tennis competitions (U12, U14, U16, and the National Junior Team) from 2014 to 2019 were investigated in terms of competitors\' birth dates and year-end rankings. For the purposes of the analysis, the birth dates were also separated into quarters and half years. The study\'s objectives were to analyze the prevalence of the RAE among young Chinese female tennis players and to further examine how the RAE affects athletic performance. Differences between the observed and expected distributions of birth dates were tested using the chi-square statistic, and subsequent calculations were tested using odds ratios. The RAE was discovered to be present in every group of Chinese junior female tennis players (p < 0.001), with the proportions of those born in the first half of the year being 56.4% (U12), 53.1% (U14), and 57.0% (U16), respectively. The RAE for athletes selected for the National Women\'s Junior Tennis Team was even more significant, with the percentage of birth dates in the first half of the year at 61.2%. Finally, we observed a tendency for the effect of the RAE on the athletic performance of adolescent female tennis players to diminish with age.
摘要：
相对年龄效应(RAE)一直是众多研究的焦点；然而，在女性运动方面的研究仍然少于男性运动。在这项研究中,调查了2014年至2019年参加中国青少年网球比赛（U12，U14，U16和国家青少年队）的所有女性球员（N=2,255），包括参赛者的出生日期和年终排名。为了分析的目的，出生日期也分为季度和半年。该研究的目的是分析中国年轻女子网球运动员中RAE的患病率，并进一步研究RAE如何影响运动成绩。使用卡方统计量检验了观察到的出生日期分布和预期出生日期分布之间的差异，随后的计算使用比值比进行检验.发现RAE存在于每组中国青少年女子网球运动员中（p<0.001），上半年出生的人的比例为56.4%(U12)，53.1%（U14），和57.0%(U16)，分别。入选国家女子青少年网球队的运动员的RAE更为重要，上半年的出生日期百分比为61.2%。最后,我们观察到RAE对青少年女网球运动员运动成绩的影响随着年龄的增长而减弱。
