Relative age effects (RAEs) within sports refer to the over representation of athletes born earlier in the selection year and the underrepresentation of those born later in the selection year. Research examining RAEs in women`s and girls` rugby union remains limited in comparison to the male literature, whilst the impacts of RAEs on the youth-to senior transition are yet to be explored in a female sport context. As such, the purpose of this study was to examine RAEs during entry into the women`s and girls` premiership and international rugby union pathways in England, as well as to compare them to their respective senior cohort (n = 1367): (a) U18 England Rugby Centre of Excellence Player (n = 325) vs. Senior Premiership Player (n = 868), and (b) U18 England Player (n = 49) vs. Senior England Player (n = 125). This study was authorized by England Rugby and gained ethical approval from the Health, Education, and Life Sciences Faculty Academic Ethics Committee at Birmingham City University (reference code: Kelly/6263/ R(V)/2020/Mar/HELS FAEC). Chi-square (x2) analyses com pared birth quarter (BQ) distributions against expected dis tributions. The findings revealed no significant difference in BQ distributions at either youth or senior levels, as well as no significant differences in the BQ distributions of those who were likely to transition from youth to senior levels (all p > 0.05). Importantly, though, descriptive statistics showed a skewed birthdate distribution in both U18 England Rugby Centre of Excellence Player (BQ1 = 30% vs. BQ4 = 20%) and U18 England Player cohorts (BQ1 = 33% vs. BQ4 = 18%). We highlight the gender-specific mechanisms that potentially explain the variations between male and female RAEs in rugby union, including developmental differences, sport popularity, and sociocultural norms. We also warn against a `copy and paste` template from the male provision to ensure the recent growth of female rugby union does not fall victim to the same RAEs in the future (Kelly, A. L. et al., 2024, J Funct Morphol Kinesiol, 9, 61).
© Copyright 2024 BASES Conference 2024. All rights reserved.