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Reduced physical exercise can impact children's mental health. Use of active electronic games can help promote psychological health. Physical education (PE class) uses different resources, methods, and contents to promote student health. We investigated the effect of exergames on the mood and self-esteem of children and compare it that of with traditional PE classes. From a sample of 213 children (7-11 years old), 140 from 10 classes of the fourth and fifth grades of elementary school (59 boys, 81 girls; mean age 9.41±0.48 years), allocated to an experimental group (EG; n = 68; five clusters) and a PE group (PE; n = 72; five clusters), participated in this experimental controlled study. The EG practiced exergames during three 40-minute classes, and the PE group held three routine curricular PE classes. Brunel's Mood Scale and Rosenberg's Self-Esteem Scale were applied. Repeated measures ANOVA identified differences between sexes and groups. The main results of the EG demonstrated reduced tension in girls (p <0.05; ES: 0.62; 95% CI: 0.17-1.05). Regarding sex comparisons, anger was lower in girls (F: 4.57; p <0.05; ES: 0.61; 95% CI: 0.11-1.11) in the EG. Vigor was higher in girls in the EG than in those in the PE group (F: 5.46; p <0.05; ES: 0.56; 95% CI: 0.12-1.01). The main results of the PE group indicated increased self-esteem in boys (p <0.05; ES: 0.58; 95% CI: 0.08-1.07) and reduction of girls' mental confusion (p <0.05; ES 0.58; 95% CI 0.15-1.06). Thus, exergames impact boys' and girls' self-esteem and mood, as well as traditional physical education classes. Further study on exergames in schools is essential, with long-term effects on physical and mental health. Exergames bring interesting, varied content, technology, and innovation that can increase the attractiveness of physical education.

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OBJECTIVE: Investigate the relationship between the initiation age and practice time, in training and competition, and the ranking position of youth elite tennis players. METHOD: Participated 130 youth elite tennis players with a Brazilian ranking (102 boys and 28 girls) aged 13-18 years, selected in two international competitions. A Binary logistic regression was performed. RESULTS: The results showed that tennis players who started earlier have a 28% better chance of reaching the top 20 ranking, and that each additional year of training increases the chance of a tennis player to reach the top 20 by 1.43 times. Also, each year of experience in competitions increases the chance of tennis players to reach the top 20 ranking by 1.41 times, and that an earlier start each year in participating in competitions increases the chances of an athlete to reach the top 20 by 20%. CONCLUSION: The initiation age of training and the experience in competitions are important factors there are related to better ranking positions of youth elite tennis players

OBJETIVO: Investigar la relación entre la edad de iniciación y los anos de prática, en el entrenamiento y la competición, y la posición de clasificación de jóvenes tenistas de élite. MÉTODO: Participarán 130 jóvenes tenistas de elite con una clasificación en la Confederación Brasileña de Tenis (102 chicos y 28 chicas) de 13 a 18 años selecionados en dos competiciones internacionales. Se realizó una regresión logística binaria. RESULTADOS: Los resultados mostraran que los jugadores de tenis que empezaron antes tienen una probabilidad un 28% mayor de alcanzar el Top 20 y que cada año adicional de entrenamiento aumenta la probabilidad de que un tenista alcance el Top 20 en 1.43 veces. También cada año de experiencia en competiciones aumenta la probabilidad de que los jugadores alcancen el Top 20 en 1.41 veces, y que un comienzo más temprano al participar en competiciones aumenta las posibilidades de que un atleta alcance el Top 20 en 20%. CONCLUSIONES: La edad de iniciación de la formación y la experiencia en competiciones son inportante factores que se relacionan a mejores posiciones en la clasificación de jóvenes tenistas de la élite

OBJETIVO: Investigar a relação entre a idade de iniciação e os anos de prática, em treino e competição, e a posição no ranking de jovens tenistas de elite. MÉTODO: Participaram 130 jovens tenistas de elite com uma classificação na Confederação Brasileira de Tenis (102 meninos e 28 meninas) de 13 a 18 anos selecionados em duas competições internacionais. Foi realizada uma regressão logística binária. RESULTADOS: Os resultados mostraram que os tenistas que iniciaram mais cedo possuem uma probabilidade de 28% maior de alcançar o Top 20 e que cada ano adicional de treinamento aumenta a probabilidade de que um tenista alcance o Top 20 em 1.43 vezes. Além disso, cada ano de experiência em competições aumenta a probabilidade dos tenistas alcançarem o Top 20 em 1.41 vezes, e um início mais cedo em participações em competições aumenta a probabilidade de um atleta alcançar o Top 20 em 20%. CONCLUSÕES: A idade de início de treino e a experiência em competições são fatores importantes que estão relacionados com melhores posições no ranking de jovens tenistas de elite

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