RESUMO No Brasil, os campeonatos de futebol para crianças e adolescentes são geralmente organizados e divididos por categorias relacionadas a faixas etárias (normalmente a cada dois anos), com o objetivo de promover maior equilíbrio e justiça na competição. Embora produzam certo cenário de proximidade de capacidades de desempenho entre os participantes, por outro lado, tal divisão comporta e sustenta algumas condições de desigualdade de ofertas de oportunidades de aprendizagem. Isso somado a questões de ordem sociocultural e pedagógica, estrutura um fenômeno denominado Efeito da Idade Relativa (EIR). O objetivo deste estudo foi analisar a ocorrência do EIR em goleiros e goleiras dos Campeonatos Brasileiros de futebol masculino e feminino da Série A no ano de 2018. As informações sobre as datas de nascimento dos(a) atletas foram coletadas através do site oficial da Confederação Brasileira de Futebol. O grupo masculino foi composto por 68 goleiros dentro de uma população de 73 indivíduos, enquanto o grupo feminino foi composto por 39 de um total de 43 goleiras. Para a análise estatística foi utilizado o teste qui-quadrado. Os resultados revelam que o EIR não acontece nesta população, em nenhum dos gêneros. Isso pode ocorrer por existir menor concorrência por vagas de goleiros e goleiras em equipes de futebol. Conclui-se que, para o gênero masculino e feminino, a data de nascimento não parece influenciar a oferta de oportunidades para goleiros atingirem a elite do futebol brasileiro.

ABSTRACT In Brazil, soccer championships for children and adolescents are generally organized and divided into categories by age group (usually every two years), with the aim of bringing about greater balance and fairness in the competition. Although they create a certain scenario in which performance capabilities are similar among participants, such division, on the other hand, enables and sustains some conditions that provide unequal learning opportunities. Coupled with socio-cultural and pedagogical issues, it structures a phenomenon called Relative Age Effect (RAE). The objective of this study was to analyze the occurrence of RAE among male and female goalkeepers that competed in the A series of the 2018 Brazilian men’s and women’s soccer championships. Information about the athletes’ birth dates was collected from the official website of the Brazilian Football Confederation. The male group was composed of 68 goalkeepers within a population of 73 individuals, while the female group was composed of 39 of totals of 43 goalkeepers. For statistical analyses, the chi-square test was used. Results reveal that the RAE does not happen in this population, regardless of gender. This may be due to the goalkeeper position in soccer teams being less contested. It is concluded that, for both males and females, date of birth does not seem to influence the offer of opportunities for goalkeepers to reach the elite of Brazilian soccer.

Abstract Aims: To investigate elite women sports career development can be a way to better understand how gender issues and specific women sport practice conditions have influenced athletes’ life and personal experiences, also subside reflections on policies and pedagogic intervention on the sport. The aims of this study were to investigate and describe the process of sports career development lived by Brazilian women elite futsal players, based on their own sport experiences and perspectives on futsal. Methods: Data of this qualitative study were produced by semi-structured retrospective interviews with 13 Brazilian elite women futsal players. Data gathering and data analysis were based on the Grounded Theory method. Results: This section is organized in four axes, with their main categories in parenthesis: 1.Diversified experiences in childhood and youth (enjoyment related to diversified sport practices); 2.Initiation on ‘kicking ball games’ practices (experiences with football and futsal informal practices and suffering of prejudice related to gender issues); 3.Systematic participation in futsal practices (experiences in systematic futsal practices within older age groups); 4.The investment on elite futsal career (moving from football to futsal career). Conclusion: Interviewed players had their first sports experiences on a variety of practices during sport initiation in childhood. The beginning on systematic practice of futsal occurred later than men athletes. The lack of competitions for young girls, and the fact that futsal and other ‘ball kicking games’ are considered as men preserve practices contributed to the late sport specialization process. The athletes’ career presented strong thresholds related to gender issues on futsal.

Resumo O objetivo deste trabalho foi analisar e descrever a produção científica relacionada ao jiu-jítsu, de modo a identificar tendências, lacunas e possibilidades de desenvolvimento de pesquisa. Através de busca nas bases de dados digitais Web of Science, SciELO, Scopus, PubMed, Bireme, LILACS e Redalyc, além do banco de teses e dissertações da Capes, e análise temática de 105 artigos, duas teses e 23 dissertações, tem-se como principais resultados: a) desigualdade numérica entre diferentes abordagens e subáreas de pesquisa, bem como disciplinas de estudo; b) característica heterogênea dos participantes destes estudos, sendo a maioria homens adultos não competidores; c) destaque do Brasil na produção científica sobre o jiu-jítsu; d) crescimento quantitativo e qualitativo de pesquisas; e) processo de internacionalização de pesquisas. Conclui-se que, assim como no âmbito esportivo mais amplo, a pesquisa sobre jiu-jítsu se encontra em franca expansão, principalmente no Brasil, com lacunas que representam potenciais áreas de interesse para investigações futuras.

Abstract The aim of this article was to analyse and describe the scientific production related to jiu-jitsu, in order to identify trends, gaps and research possibilities. Searches on the digital data basis Web of Science, SciELO, Scopus, PubMed, Bireme, LILACS and Redalyc, besides Capes’s digital thesis library, and thematic analysis on 105 articles, 2 theses and 23 dissertations, yielded the following main results: a) numerical inequality between different research approaches and subareas, as well as study subjects; b) the profiles of participants in those studies are highly diverse, and most are male non-competitors; c) Brazil stands out in academic production on jiu-jitsu; d) increasing quantitative and qualitative research; e) process of internationalization of research. The study found that, just as in the sports field as a whole, research on jiu-jitsu is in full expansion, mainly in Brazil, with gaps that are potential areas of interest for future investigation.

Resumen El objetivo de este trabajo fue analizar y describir la producción científica relacionada con el jiu-jitsu, para identificar tendencias, lagunas y posibilidades de desarrollo de investigación. A través de la búsqueda en las bases de datos digitales Web of Science, SciELO, Scopus, PubMed, Bireme, LILACS y Redalyc, además del banco de tesis y disertaciones de Capes, y del análisis temático de 105 artículos, dos tesis y 23 disertaciones, se tienen como principales resultados: a) desigualdad numérica entre diferentes aproximaciones y subáreas de investigación, así como disciplinas de estudio; b) característica heterogénea de los participantes en estos estudios, donde la mayoría es de hombres adultos no competidores; c) destaque de Brasil en la producción científica sobre el jiu-jitsu; d) crecimiento cuantitativo y cualitativo de investigaciones; e) proceso de internacionalización de investigaciones. Se concluye que, así como en el ámbito deportivo más amplio, la investigación sobre jiu-jitsu se encuentra en expansión, principalmente en Brasil, con lagunas que representan potenciales áreas de interés para investigaciones futuras.