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Abstract

This study was conducted to determine whether the relative age effect (RAE) is present in different age groups, weight categories, sexes, and across different time frames in international-level judo competition. A total of 9451 judo athletes competing at the Olympic Games and/or World Championships in the Cadet, Junior and/or Senior age groups between 1993 and 2020 were considered. Athletesʼ birthdate distributions were grouped in four quartiles (Q1: January-March; Q2: April-June; Q3: July-September; Q4: October-December) and compared to a day-corrected theoretical distribution using Chi-squared analysis. Poisson regression was also used to evaluate the ability to explain weekly birth count. RAE was more prevalent in males than females (p < .05), and for Cadets and Juniors compared to Seniors (p < .05). Heavyweight and middleweight categories presented RAEs in Senior and Junior males, while for females it was present in Cadet heavyweights (p < .05). RAE was more prevalent in recent years (2009–2021) for Senior male judo athletes (p < .05). Poisson analysis illustrated some nuanced information, including RAE detection during an earlier time frame, not readily apparent with the traditional analysis.

Keywords

birth distribution selection bias athlete development competition combat sport

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References

Albuquerque

M. R.

Franchini

Lage

G. M.

Da Costa

V. T.

Costa

I. T.

Malloy-Diniz

L. F.

(2015). The relative age effect in combat sports: An analysis of olympic judo athletes, 1964–2012. Perceptual and Motor Skills, 121(1), 300–308. https://doi.org/10.2466/10.PMS.121c15x2

Albuquerque

M. R.

Lage

G. M.

Da CostaFerreira

V. T. R. M.

Penna

E. M.

Moraes

L. C. C. d. A.

Malloy-Diniz

L. F.

(2012). Relative age effect in Olympic taekwondo athletes. Perceptual and Motor Skills, 114(2), 461–468. https://doi.org/10.2466/05.25.PMS.114.2.461-468

Albuquerque

M. R.

Fukuda

D. H.

Da Costa

V. T.

Lopes

M. C.

Franchini

(2016). Do weight categories prevent athletes from the relative age effect? A meta-analysis of combat sports. Sport Sciences for Health, 12(2), 133–139. https://doi.org/10.1007/s11332-016-0282-0

Boccia

Moisè

Franceschi

Trova

Panero

La Torre

Rainoldi

Schena

Cardinale

(2017). Career performance trajectories in track and field jumping events from youth to senior success: The importance of learning and development. PLoS One, 12(1), Article e0170744. https://doi.org/10.1371/journal.pone.0170744

Brustio

P. R.

Boccia

De Pasquale

Lupo

Ungureanu

A. N.

(2021). Small relative age effect appears in professional female Italian team sports. International Journal of Environmental Research and Public Health, 19(1), 385. https://doi.org/10.3390/ijerph19010385

Brustio

P. R.

Kearney

P. E.

Lupo

Ungureanu

A. N.

Mulasso

Rainoldi

Boccia

(2019). Relative age influences performance of world-class track and field athletes even in the adulthood. Frontiers in Psychology, 10(1395), 1–9, https://doi.org/10.3389/fpsyg.2019.01395

Brustio

P. R.

Lupo

Ungureanu

A. N.

Frati

Rainoldi

Boccia

(2018). The relative age effect is larger in Italian soccer top-level youth categories and smaller in serie A. PLoS One, 13(4), Article e0196253. https://doi.org/10.1371/journal.pone.0196253

Cobley

Baker

Wattie

McKenna

(2009). Annual age-grouping and athlete development: A meta-analytical review of relative age effects in sport. Sports Medicine, 39(3), 235–256. https://doi.org/10.2165/00007256-200939030-00005

Cohen

(1988). Statistical power anaylsis for the behavioural science (2nd ed.). Academic Press.

10.

Delorme

(2014). Do weight categories prevent athletes from relative age effect? Journal of Sports Sciences, 32(1), 16–21. https://doi.org/10.1080/02640414.2013.809470

11.

Delorme

Boiché

Raspaud

(2010). Relative age and dropout in French male soccer. Journal of Sports Sciences, 28(7), 717–722. https://doi.org/10.1080/02640411003663276

12.

Doyle

J. R.

Bottomley

P. A.

(2018). Relative age effect in elite soccer: More early-born players, but no better valued, and no paragon clubs or countries. PLOS ONE, 13(2), Article e0192209. https://doi.org/10.1371/journal.pone.0192209

13.

Doyle

J. R.

Bottomley

P. A.

(2019). The relative age effect in European elite soccer: A practical guide to Poisson regression modelling. PLOS ONE, 14(4), Article e0213988. https://doi.org/10.1371/journal.pone.0213988

14.

Franchini

Artioli

G. G.

Brito

C. J.

(2013). Judo combat: Time-motion analysis and physiology. International Journal of Performance Analysis in Sport. 13(3), 624–641. https://doi.org/10.1080/24748668.2013.11868676

15.

Fukuda

D. H.

(2015). Analysis of the relative age effect in elite youth judo athletes. International Journal of Sports Physiology and Performance, 10(8), 1048–1051. https://doi.org/10.1123/ijspp.2014-0463

16.

Fukuda

D. H.

Kelly

J. D.

Albuquerque

M. R.

Stout

J. R.

Hoffman

J. R.

(2017). Relative age effects despite weight categories in elite junior male wrestlers. Sport Sciences for Health, 13(1), 99–106. https://doi.org/10.1007/s11332-017-0351-z

17.

Goldschmied

(2011). No evidence for the relative age effect in professional womenʼs sports. Sports Medicine, 41(1), 87–88. https://doi.org/10.2165/11586780-000000000-00000

18.

Hancock

D. J.

Starkes

J. L.

Ste-Marie

D. M.

(2015). The relative age effect in female gymnastics: A flip-flop phenomenon. International Journal of Sport Psychology, 46(6), 714–725. https://doi.org/10.7352/IJSP/2015.46.714

19.

Hochberg

(1988). A sharper Bonferroni procedure for multiple tests of significance. Biometrika, 75(4), 800–802. https://doi.org/10.1093/biomet/75.4.800

20.

IJF (2020). International Judo Federation. https://www.ijf.org/wrl_olympic_teams

21.

IOC (2021). International Olympic Committe. https://olympics.com/ioc

22.

Julio

U. F.

Takito

M. Y.

Mazzei

Miarka

Sterkowicz

Franchini

(2011). Tracking 10-year competitive winning performance of judo athletes across age groups. Perceptual and Motor Skills, 113(1), 139–149. https://doi.org/10.2466/05.10.11.pms.113.4.139-149

23.

Miarka

Marques

J. B.

Franchini

(2011). Reinterpreting the history of women’s judo in Japan. The International Journal of the History of Sport, 28(7), 1016–1029. https://doi.org/10.1080/09523367.2011.563633

24.

Musch

Grondin

(2001). Unequal competition as an impediment to personal development: A review of the relative age effect in sport. Developmental Review, 21(2), 147–167. https://doi.org/10.1006/drev.2000.0516

25.

Sisjord

M. K.

Kristiansen

(2009). Elite women wrestlers’ muscles. International Review for the Sociology of Sport, 44(2–3), 231–246. https://doi.org/10.1177/1012690209335278

26.

Smith

K. L.

Weir

P. L.

Till

Romann

Cobley

(2018). Relative age effects across and within female sport contexts: A systematic review and meta-analysis. Sports Medicine, 48(6), 1451–1478. https://doi.org/10.1007/s40279-018-0890-8

27.

Wattie

Schorer

Baker

(2015). The relative age effect in sport: A developmental systems model. Sports Medicine, 45(1), 83–94. https://doi.org/10.1007/s40279-014-0248-9

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Relative Age Effect in Judo Competitions: Influence of Age,Weight Category,Sex,and Time Frames

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