Evidence map›Paper›PMID 36249347›Full record

ArticleSport sciences for health2023

Relative age effect in elite Brazilian athletes in different combat sports: an observational study.

Paulo Francisco de Almeida-Neto, Rui Barboza Neto, Iago Medeiros, Fernanda Cristina Silva de Oliveira, Abel Gomes de Oliveira Filho, Dihogo Gama de Matos, Paulo Moreira Silva Dantas, Breno Guilherme de Araújo Tinôco Cabral

Open access · hybridAbstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Sport sciences for health, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed
1.9field-weighted citation impact, top 14% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

5 citing papers in PubMed, 8 citations in OpenAlex.

  1. Relative Age Effect in Olympic Karate: Evidence from Tokyo 2020.Journal of functional morphology and kinesiology · 2025
    Article
  2. Article
  3. Relative age effect in the 2022-2023 World Fencing Championships.Frontiers in sports and active living · 2025
    Article
  4. Article
  5. Relative age effects in ice hockey extends to coaching.Frontiers in sports and active living · 2024
    Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors at 2 institutions in 2 countries.

Paulo Francisco de Almeida-NetoHealth Sciences Center, CCS-UFRN, Federal University of Rio Grande do Norte, Natal, RN 59012-570 Brazil.ORCID 0000-0002-2860-2260
Rui Barboza NetoDepartment of Physical Education, DEF-UFRN, Federal University of Rio Grande do Norte, Av. Senador Salgado Filho, 3000 Campus Central, Lagoa Nova, Natal, RN 59078-970 Brazil.
Iago MedeirosDepartment of Physical Education, DEF-UFRN, Federal University of Rio Grande do Norte, Av. Senador Salgado Filho, 3000 Campus Central, Lagoa Nova, Natal, RN 59078-970 Brazil.
Fernanda Cristina Silva de OliveiraDepartment of Physical Education, DEF-UFRN, Federal University of Rio Grande do Norte, Av. Senador Salgado Filho, 3000 Campus Central, Lagoa Nova, Natal, RN 59078-970 Brazil.
Abel Gomes de Oliveira FilhoDepartment of Physical Education, DEF-UFRN, Federal University of Rio Grande do Norte, Av. Senador Salgado Filho, 3000 Campus Central, Lagoa Nova, Natal, RN 59078-970 Brazil.
Dihogo Gama de MatosCardiovascular and Physiology of Exercise Laboratory, University of Manitoba, Winnipeg, Canada.
Paulo Moreira Silva DantasHealth Sciences Center, CCS-UFRN, Federal University of Rio Grande do Norte, Natal, RN 59012-570 Brazil.
Breno Guilherme de Araújo Tinôco CabralHealth Sciences Center, CCS-UFRN, Federal University of Rio Grande do Norte, Natal, RN 59012-570 Brazil.
Universidade Federal do Rio Grande do Norte · BRUniversity of Manitoba · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Background: The relative age effect (RAE) suggests that, due to maturity, young athletes born in the first quartiles of the year may have advantages over those born in the last quartiles of the year. Thus, it is important to evaluate the RAE in different sports and to consider the particularities of the subdivisions of the sports categories. Objective: To analyze the RAE in the top 20 of the Brazilian rankings in different combat sports. Methods: Observational study that analyzed the national databases for the year 2019 (from categories U-11 to U-18) made publicly available by the Brazilian confederations of karate, taekwondo and fencing. We obtained data on date of birth, age category and body weight of all modalities, type of fencing competition weapon (Epee, Foie and Saber) and type of karate modality (kumite and kata) from the top 20 places in each ranking. The final sample consisted of 1,486 athletes (Age: 14.2 ± 2.3. Male-53.2%. Female-46.8%). To identify the RAE, we performed a contingency analysis and compared the results between the sexes within the same sport. Results: There was RAE in the U-11, U-12, U-15 and U-17 fencing categories ( Conclusion: The results showed the existence of a relative age effect in elite athletes ranked (top 20 places in each ranking) only for the sport of fencing and karate kumite. Graphical abstract:

Indexed as

AthleteBiological maturationMaturityRelative ageSport

Identifiers

PMID36249347
PMCPMC9547565
OpenAlexW4303650107

What Socratic holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the Socratic graph.