No abstract

-In sport, the relative age effect (RAE) refers to the advantages of participation and performance that athletes born in the first months of the selection year have in relation to those within the same age category. The aim of the present study was to investigate the RAE in athletes of the Brazilian Basketball Championship of the U-15 category in 2015, analyzing differences between sexes, geographic region, competitive level and performance of teams. The information of teams and the birth quarter (quartile) of 530 basketball players were obtained through the website of the Brazilian Basketball Confederation (www. cbb.com.br). The results showed greater representation of male athletes born in the first months of the year, the first and second divisions, of the Southeastern, Northern and Mid-Western regions and in female medalists. It was concluded that the RAE is present in Brazilian U-15 male basketball players, being higher in athletes of higher competitive level, particularly in the Southeastern, Northern and Mid-Western regions of Brazil. In addition, RAE proved to be associated with the winning of women's medals.Key words: Athletes; Basketball; Relative age. Basketball (www.cbb. com.br Resumo -No esporte, o efeito da idade relativa (EIR) refere-se a vantagens de participação e desempenho que os atletas nascidos nos primeiros meses do ano de seleção possuem em relação aos demais atletas dentro de uma mesma categoria etária. O objetivo do presente estudo foi investigar o EIR nos atletas do Campeonato Brasileiro de Basquetebol da categoria sub-15 em 2015, analisando diferenças entre os sexos, região geográfica, nível competitivo e desempenho das equipes. As informações das equipes e o trimestre de nascimento (quartil) de 530 basquetebolistas foram obtidas através do site da Confederação Brasileira de

This study examined individual, task, and environmental constraints that influence the career progression of youth Brazilian elite basketball players and the probability of reaching Novo Basquete Brasil (NBB) and to determine if the association of the relative age effect (RAE) is a key factor in the career progression. The sample consisted of 4,692 male players who were registered to participate in at least one U15, U17, or U22 youth Brazilian basketball championship between 2004 and 2018. Athletes who reached a high-performance level were coded like NBB players (9.6%). The birthdates, height, body mass, playing position, geographic region, club, competition category, and team performance were retrieved from the official data archive of the Brazilian Basketball Confederation and the National Basketball League. The maturity status was estimated using the predicted age at peak height velocity. A binary logistic regression examined the influence of each characteristic on the probability of a youth Brazilian basketball player to reach the NBB. The receiver operating characteristic (ROC) curves and the associated area under the curve (AUC) were used to assess the discriminant ability of the model. The taller and younger players not selected early into national teams, without specialization by playing position, who participated in U22 national championship, migrated to the southeast region, and remained in the formation process over time have a greater chance to reach the NBB. The ROC curve demonstrated an AUC of 93%. A combination of individual, task, and environmental characteristics influences the sport career of a young Brazilian basketball player in reaching the NBB. Further, early-maturing athletes have a greater chance to reach higher performances. RAE influences lower-level categories, but not a “NBB player's” career progression. The coaches, stakeholders, and practitioners should perform a holistic evaluation of sport talent in terms of a constraint-based theoretical model with the aim of avoiding bias produced by the maturational status and RAE in the youth Brazilian elite basketball.

The same training stimulus can provide different physiological adaptations for athletes of the same team.The aim of this study was to compare training and game loads in young male basketball players. Data were obtained from 4 training sessions and one game session usingPolar Team Pro equipment. Physiological data (HR) were used to monitor internal responses through Edwards’TRIMP,and data on distance traveled by the player on the court (External Training Load).To observe differences between eTRIMP,HR max and distance traveled,the T-Test was used for paired samples. The mean internal training load, according to Edwards’TRIMP, for the four training sessions was 132 ± 69. Mean HR max and distance traveled values were 143 ± 67 and 2.273 ± 1170, respectively. Regarding game load, Edwards’TRIMP,maximum HR and distance traveled were 108 ± 33, 199 ± 4 and 2.240 ± 617, respectively. No statistically significant differences were found between the mean values of training sessions compared to the game session in relation to the Edwards’ TRIMP measures and distance traveled, but HR max was significantly higher during the game compared to training. It was concluded that the loads applied during training are similar to those applied in the game.

Efeito da idade relativa nos jogadores do campeonato brasileiro de basquete da categoria sub-17 PALAVRAS CHAVE: Idade Cronológica. Efeito da idade relativa. Desempenho Desportivo. Basquetebol. RESUMO O objetivo do estudo foi verificar o efeito da idade relativa (EIR) nos jogadores do campeonato brasileiro de basquete sub-17, considerando o sexo e a classificação das equipes. Assim, foi identificado o trimestre de nascimento (quartis) de 540 basquetebolistas (270 de cada sexo). Para compara-los pela classificação obtida, os jogadores foram agrupados nas equipes: "Medalhistas", "Intermediárias" e "Últimas colocadas". Todas as informações pertinentes ao estudo foram obtidas através do site da Confederação Brasileira de Basketball. Para análise dos dados foi utilizado o teste Qui-Quadrado (χ 2 ). Dos resultados obtidos verificou--se uma predominância de atletas nascidos no 1º e 2º quartis (χ 2 =23,78; p<0,001), com maior EIR no sexo masculino (χ 2 =16,74; p<0,001) quando comparados ao feminino (χ 2 =8,45; p=0,038). Em relação a classificação final do campeonato o efeito foi encontrado nos jogadores "medalhistas" do sexo masculino (χ 2 =8,28; p=0,041) e feminino (χ 2 =9,43; p=0,024) e nos jogadores das equipes "intermediárias" do sexo masculino (χ 2 =13,08; p=0,004).

IntroduçãoSatisfação corporal associada à gordura corporal e estado nutricional em jovens basquetebolistas O esporte infanto-juvenil, nos últimos anos, tem apresentado peculiaridades que exigem do esportista, o máximo de rendimento atlético, às vezes, em idades relativamente precoces. Atletas têm sido cobrados por treinadores, patrocinadores e pais para otimizarem a cada dia seus desempenhos esportivos. Melhorar capacidades siológicas, biomecânicas e psicológicas torna-se essencial para se atingir uma boa performance na maioria das modalidades esportivas [1][2] . Alguns esportes possuem características intermitentes e de tomada de decisão, devendo o atleta, aperfeiçoar tanto capacidades físicas, quanto habilidades psicológicas, como é o caso do basquetebol 3 . Por sua vez, o basquetebol é uma modalidade esportiva praticada em diversos países no mundo. Os basquetebolistas costumam apresentar elevadas estaturas. Isto ocorre devido ao processo de seleção para este esporte, já que é exigido que o atleta seja alto, além de apresentar impulsão vertical aprimorada 4

The aims of this study were: 1) to evaluate the sports potential of young basketball players; 2) to identify variables that discriminate sports potential assessed by coaches; 3) to verifythe relationship between classification of the multidimensional profile of athletes and classification of the sports potential by coaches. Sixty-two young basketball players aged 15.6±1.1 years from U-15 (n = 24) and U-17 (n = 38) categories participated in the study. A test battery was applied to evaluate sports potential indicators: 1) anthropometric; 2) physicomotor; 3) psychological;4) skills;5) socio-environmental;6) maturational and 7) sports potential.Clusteranalysis was performed in three groups: high, medium and low potential. Student’s t-test was used for the comparison between athletes evaluated by the coach as excellent and the others and the Chi-Square test to verify the relationship between sports potential classifications. It was observed that in the high-potential group, athletes were chronologically older, with higher % predicted adult height (PMS), competitive and determined sports orientation, higher body size, lower skinfold summation, and greater physicomotor performance. In comparison with other athletes, high-potential basketball players presented higher stature, wider wingspan,longer limb length, greater predicted adult stature and higher Z score of the % PMS. It could be concluded that the multidimensional approach was useful for the evaluation of the sports potential of young basketball players, requiring the use of multidimensional variables, in addition to coaches’ opinion regarding the potential of their athletes.

RESUMOIntrodução: Parece que a busca pela muscularidade pode ter relação com os transtornos alimentares (TA) em atletas do sexo masculino. Todavia, de acordo com nosso conhecimento, não existem estudos sobre esse tema. Objetivo: Analisar a relação da busca pela muscularidade e estado de humor com os transtornos alimentares nessa população. Métodos: Participaram do estudo 112 competidores de diversas modalidades esportivas, pertencentes a federações do sudeste brasileiro. Utilizou-se o Eating Attitudes Test (EAT-26), Drive for Muscularity Scale (DFM) e a Escala de Humor de Brunel (BRUMS) para avaliar, respectivamente, os comportamentos alimentares de risco de TA, a busca pela muscularidade e o estado de humor. Resultados: Os achados dos modelos de regressão hierárquica não demonstraram relação da busca pela muscularidade (p > 0,05) e do estado de humor (p > 0,05) com os transtornos alimentares. Todavia, os resultados indicaram diferença de busca pela muscularidade em razão das classificações do EAT-26 (p < 0,05), fato que não foi revelado para o estado de humor (p > 0,05). Conclusão: Concluiu-se que tanto o estado de humor quanto a busca pela muscularidade não se relacionaram com os transtornos alimentares em atletas do sexo masculino.Descritores: transtornos da alimentação e da ingestão de alimentos; imagem corporal; atletas. ABSTRACT Introduction: It seems that the pursuit for muscularity may be related to eating disorders (ED) in male athletes