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Journal of Science in Sport and Exercise · 2026 · Vol. 8 · Issue 2 · Springer
The purpose of this study was to investigate the prevalence of relative age effects (RAEs) within and between U18, U21 and professional senior squads, that compete in the highest (respective) leagues within England. Birthdate, playing position and age (years) of U18 ( n = 487), U21 ( n = 350), and senior ( n = 396) players from squads competing in the highest divisions of their respective age groups were obtained. Moreover, na...