Real data on RAE. https://www.usyouthsoccer.org/wp-content/uploads/sites/160/2023/09/Relative-Age-Effect-in-Elite-Youth-Soccer.pdf Yes for boys, Equivocal for girls
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Meh, just an RAE denier who hates change. Said that they are so helicoptering their kids soccer journey. |
Yea…you’re drinking the koolaide man. If futsal was a magic pill… |
Nope. Not invented. |
This data is well more than a decade old. |
Wow this is really good. Its also exactly dead on my experience with a high level Sept birthday girl in BY. Athlete Girls go through puberty at a younger age than boys and get less of a body change (than boys do) when it happens. One interesting thing the link doesn't call out but definitely exists on the girls side is knee injuries. Because girls go through puberty at a younger age than boys the wear and tear also happens at a younger age. If you're full grown at 12 it means by 16-17 expect to have ACL issues. This is one of those little zingers they dont tell you. Using the rae analogy these are the players that get picked first when they're young but by 16-17 are hurt and replaced by players that went through puberty later. This is why when they get older theres more Q4 players on top teams then when they're young. |
My boy does more than that and I think it’s not enough. Can’t imagine thinking this shows they’re trying their best to be “top”. |
Girl numbnuts |
Illustrates why those with girls can't believe the relative age effect exists or attempt to minimize its effects. And funny that the Tennessee study didn't see RAE until puberty for boys. |
Okay here is a more recent study. https://bmcsportsscimedrehabil.biomedcentral.com/articles/10.1186/s13102-025-01312-1 Interesting that Premier league shows no effect, perhaps because the mix of English players coming up with a September cutoff mixed with internationals with BY. |
The study shows that RAE exists for boys. But it also shows not just in the US. And not just in soccer. No one has yet to find a solution in any sport in any country. |
It actually has more to do with talent id and the academy structured that allow for different development speeds. |
Interestingly enough if you dig deep enough in that study, you find another MORE ON POINT where one realizes RAE is very significant: https://www.termedia.pl/Relative-age-effect-across-the-talent-identification-process-r-nof-youth-female-soccer-players-in-the-United-States-Influence-r-nof-birth-year-position-biological-maturation-and-skill-level,78,52572,1,1.html What's really fun is the authors use BY to analyze these groups and FIND later year balance without apparently realizing those later years BEGAN in a SY system. They call it reverse RAE. It's bonkers, really. CONCLUSIONS "To conclude, our data showed an RAE of youth female soccer players within the US. At Club and TID Center, this RAE was most prominent in goalkeepers, center backs, midfielders, and center forwards, and for U13–U18 ages, but these did not typically transfer to YNT. Consistent RAEs were observed in early- and on-time-maturers across all levels. A reversal of ‘typical’ RAE was evident at YNT, with late-maturers more likely to be from Q4 and a higher percentage than elsewhere in the TID process. When interpreting all the data, some limitations should be acknowledged. Due to the large volume of players and the club soccer environment, we used estimated measurements of maturation. Future research may examine comparisons between scouts’ perceptions and actual biological maturation status. Moreover, we only provided a ‘snapshot’ of RAE in youth female soccer in the US. Therefore longitudinal, cross-sectional analysis examining youth-to-senior transitions would be beneficial to identify if there were different patterns of RAE amongst players retained across the stages in comparison to those newly selected [22]." |