Overweight and obesity are not associated to high blood pressure in young people sport practitioners. / O sobrepeso e a obesidade não estão associados com a pressão arterial elevada em jovens praticantes de esportes.

The aim of this study was to analyze the association between overweight and obesity with high blood pressure (HBP) according to sports practice in young people. Took part in this study 636 young people aged 10 to 17 years of Londrina, Parana State, Brazil. Sex, age, parental education, sedentary behavior, sports practice, nutritional status and blood pressure were analysed. Poisson regression was used to estimate the prevalence ratio (PR) and 95% confidence intervals. Overweight and obesity young people showed higher prevalence of HBP compared to eutrophics when analysed the total sample (25,7 e 29,5 vs 15,2%) and non sport practitioners (29,7 e 33,3 vs 15,1%), which did not occur with sports practitioners (17,1 e 18,2 vs 15,5%). Positive associations were found between overweight and obesity with HBP in total sample (PR = 1,60, 1,02-2,52 and 1,93, 1,15-3,25) and on non sport practitioners (RP = 1,80, 1,05-3,14 and 2,15, 1,10-4,16). For young people sports practitioners were not found associations between overweight and obesity with HBP (PR = 1,01, 0,36-2,82 and 1,09, 0,48-2,48). Weight excess was not associated with HBP in young people sports practitioners, suggesting cardiovascular protection in young people with overweight and obesity.

O objetivo do estudo foi analisar a associação entre o sobrepeso e a obesidade com a pressão arterial elevada (PAE), de acordo com a prática esportiva de jovens. Participaram do estudo 636 jovens de 10 a 17 anos da cidade de Londrina-PR. Foram analisadas as variáveis sexo, idade, escolaridade paterna, comportamento sedentário, prática esportiva, estado nutricional e pressão arterial. A regressão de Poisson foi utilizada para estimar a razão de prevalência (RP) e os intervalos de confiança de 95%. Jovens com sobrepeso e obesidade apresentaram maiores prevalências de PAE, comparados aos eutróficos, quando analisadas a amostra total (25,7 e 29,5 vs 15,2%) e os não praticantes de esportes (29,7 e 33,3 vs 15,1%), o mesmo não ocorrendo com os praticantes de esportes (17,1 e 18,2 vs 15,5%). Foram encontradas associações positivas entre o sobrepeso e a obesidade com a PAE na amostra total (RP = 1,60, 1,02-2,52 e 1,93, 1,15-3,25) e nos jovens não praticantes de esportes (RP = 1,80, 1,05-3,14 e 2,15, 1,10-4,16). Para os jovens praticantes de esportes não foram encontradas associações entre sobrepeso e obesidade com a PAE (RP = 1,01, 0,36-2,82 e 1,09, 0,48-2,48). O excesso de peso não se associou com a PAE em jovens praticantes de esportes, sugerindo proteção cardiovascular nos jovens com sobrepeso e obesidade.

[Agreement between two cutoff points for physical activity and associated factors in young individuals]. / Concordância entre dois pontos de corte para atividade física e fatores associados em jovens.

OBJECTIVE: To analyze the agreement between two cutoff points for physical activity (300 and 420 minutes/week) and associated factors in youth. METHODS: The study enrolled 738 adolescents of Londrina city, Paraná, Southern Brazil. The following variables were collected by a self report questionnaire: presence of moderate to vigorous physical activity, gender, age, father and mother education level, with whom the adolescent lives, number of siblings, physical activity perception, participation in Physical Education classes, facilities available to physical activity practice and sedentary behavior. Prevalence of physical activity between criterions were compared using McNemar test and the agreement was analysed by Kappa index. Multivariate analysis was performed using Poisson regression with robust variance adjustment was applied. RESULTS: The prevalence for physical activity was significantly different: 22,3% for 300 minutes/week and 12,8% for 420 minutes/week (p<0,05), but the agreement was strong (k=0,82, p<0,001). The variables gender, father education, physical activity perception and sedentary behavior were associated to physical activity in both analyzed criteria. Participation in Physical Education class and facilities available to physical activity practice were associated to physical activity only with 300 minutes/week cutoff point. CONCLUSION: Caution is suggested regarding cutoffs use for physical activity in epidemiological studies, considering they can result in differences in prevalence of physical activity and its associated factors.