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OBJETIVOS: Analisar possiveis associacoes do nivel de pressao arterial com a aptidao cardiorrespiratoria e o indice de massa corporal em adolescentes de nivel socioeconomico baixo.METODOS: O estudo incluiu adolescentes de 14 a 17 anos de uma escola publica em Fortaleza, Ceara, que atende uma populacao de baixo poder aquisitivo e elevado risco social. Foram aferidos peso, estatura, pressao arterial sistolica e diastolica e aptidao cardiorrespiratoria estimada por meio do teste de corrida. A analise estatistica incluiu valores percentuais, media, desvio padrao, teste t de Student, Qui-quadrado e regressao logistica binaria, adotando-se p<0,05 como significativo. Foi utilizado o pacote SPSS 17.0 para as analises.RESULTADOS: Participaram do estudo 308 adolescentes, sendo 177 meninos. Verificou-se que 12,3% dos adolescentes encontravam-se acima do peso; 75,3% apresentavam baixa aptidao cardiorrespiratoria; e 51% apresentavam valores elevados de pressao arterial. Os adolescentes cujo indice de massa corporal estava acima dos criterios de saude apresentaram maior risco de niveis aumentados de pressao arterial sistolica (razao de chances 3,02; intervalo de confianca 95% 2,94-6,13; p<0,01) e diastolica (razao de chances 3,41; intervalo de confianca 95% 1,55-7,49; p=0,02). A aptidao cardiorrespiratoria nao apresentou associacao estatisticamente significativa com pressao arterial e indice de massa corporal.CONCLUSOES: Em adolescentes de nivel socioeconomico baixo, elevados indices de massa corporal foram associados a aumento da pressao arterial. O excesso de peso, a baixa aptidao cardiorrespiratoria e a pressao arterial acima do normal foram prevalentes nessa populacao.(AU) AIMS: To analyze possible associations of blood pressure level with cardiorespiratory fitness and body mass index in adolescents of low socioeconomic status.METHODS: The study included adolescents aged 14 to 17 years at a public school in Fortaleza, Ceara, which serves a population of low income and high social risk. Weight, height, systolic and diastolic blood pressure were measured, and cardiorespiratory fitness was estimated by the running test. The statistical analysis included percentages, mean, standard deviation, Student t test, chi-square and binary logistic regression, adopting p<0,05 as significant. SPSS 17.0 package was used for analysis.RESULTS: The study included 308 adolescents, being 177 boys. It was found that 12.3% of adolescents were overweight; 75.3% had low cardiorespiratory fitness; and 51% had high blood pressure. Adolescents whose body mass index was above the health criteria had higher risk of increased levels of systolic blood pressure (odds ratio 3.02; 95% confidence interval 2.94-6.13; p<0.01) and diastolic (odds ratio 3.41; 95% confidence interval 1.55-7.49; p=0.02). Cardiorespiratory fitness had no statistically significant association with blood pressure and body mass index.CONCLUSIONS: In adolescents of low socioeconomic status, high body mass index were associated with increased blood pressure. Excess weight, low cardiorespiratory fitness and blood pressure above normal were prevalent in this population.(AU)

Aptidão cardiorrespiratória e fatores de risco para hipertensão arterial em adolescentes