RESUMEN
BACKGOUND: Although obesogenic behaviors have been found to be related to social isolation, evidence-based person-centered approaches are lacking. This study investigated the association between clusters of obesogenic behavior - derived from a data-driven process - and social isolation among Brazilian adolescents. METHODS: Data from the National Adolescent School-based Health Survey (PeNSE) 2015 were analyzed. A total of 100,794 9th-grade students (51.3% females; 14.3 ± 0.1 years old) enrolled in 3,040 public and private high schools participated in the study. Social isolation was assessed by two outcomes (i.e., perceived loneliness and lack of close friends). A two-step cluster analysis was conducted to identify patterns of obesogenic behaviors with the input of leisure-time physical activity (PA), sitting time as a proxy of sedentary behavior (SB), and the weekly consumption of healthy and unhealthy food. Crude and adjusted binary logistic regression models were applied to evaluate the associations between the clusters of obesogenic behaviors and social isolation variables in adolescents. RESULTS: Three clusters were identified. Adolescents in the "Health-promoting SB and diet" (32.6%; OR = 0.69; 95% CI = 0.62-0.76) and "Health-promoting PA and diet" (44.9%; OR = 0.73; 95% CI = 0.67-0.79) clusters had lower odds of loneliness compared to those in the "Health-risk" cluster (22.5%). Those belonging to the "Health-promoting PA and diet" cluster were more likely to report having close friends (OR = 1.19; 95% CI = 1.00-1.41) than those in the "Health-risk" cluster. CONCLUSION: Adolescents in clusters where positive behaviors outweighed negative ones were less likely to perceive themselves as lonely and without close connections.
Asunto(s)
Conducta del Adolescente , Conducta Sedentaria , Femenino , Humanos , Adolescente , Masculino , Brasil/epidemiología , Ejercicio Físico , Dieta , Aislamiento Social , Análisis por ConglomeradosRESUMEN
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
Asunto(s)
Humanos , Masculino , Femenino , Adolescente , Edad de Inicio , Atletas , TenisRESUMEN
O estudo objetivou descrever o perfil sociodemográfico, socioeconômico e esportivo de tenistas infantojuvenis brasileiros competitivos de elite. Participaram 130 tenistas, sendo 102 homens e 28 mulheres. A maioria dos tenistas é natural das Regiões Sudeste e Sul e houve um predomínio de tenistas treinando nessas regiões. A maioria dos tenistas pertence à classe socioeconômica A. Em média, os tenistas iniciaram no tênis aos oito anos e o início em competições de tênis foi aos 11 anos. Os tempos médios de prática e de prática competitiva dos tenistas foram de sete e quatro anos, respectivamente. Já foram finalistas em competição internacional 16% dos atletas e aproximadamente a metade já disputou finais em competições internacionais e nacionais. Concluiu-se que os tenistas investigados são oriundos das classes econômicas mais altas. Além disso, os tenistas apresentaram grande volume de treino e tempo de prática
The study aimed to describe the sociodemographic, socioeconomic, and sports profiles of Brazilian competitive elite junior tennis players. A total of 130 athletes participated, being 102 males and 28 females. Most of them come from Brazil's Southeast and South and train in those regions. Most belong to the "A" socioeconomic class. On average, they began practicing tennis at the age of eight and started competing at the age of 11. Their average practice and competition times were seven and four years respectively. Some (16%) have been finalists in international competitions and nearly half have already played finals in national and international competitions. Those players were found to come from Brazil's highest economic classes. Moreover, they showed large amount of training and practice time
El estudio describe el perfil sociodemográfico, socioeconómico y deportivo de tenistas infantojuveniles de élite brasileños. Participaron 130 tenistas, siendo 102 hombres y 28 mujeres. La mayoría de los tenistas es natural de las regiones Sudeste y Sur y entrenan en esas regiones. La mayoría pertenece a la clase socioeconómica A. En promedio, comenzaron a practicar tenis a los ocho años y comenzaron a participar en competiciones a los 11 años. Los tiempos de práctica y de práctica competitiva fueron de siete y cuatro años en promedio, respectivamente. Han sido finalistas en competiciones internacionales 16% de los atletas y alrededor de la mitad ha disputado finales en competiciones nacionales e internacionales. Se concluye que los tenistas investigados son oriundos de las clases económicas más altas. Además, presentaron gran volumen de entrenamiento y tiempo de práctica