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Background: The proportion of arterial hypertension (AH) has increased in children and adolescents and is associated with several comorbidities. Objective: To verify the association of arterial hypertension with central and general obesity as well as according to the level of physical activity in schoolchildren. Methods: 336 children and adolescents aged 11 to 17 participated in the study. Height, body weight, waist circumference (WC) and blood pressure (BP) were measured. The body mass index z-score (BMI-z) was calculated. The level of physical activity was assessed by the short form of the International Physical Activity Questionnaire (IPAQ) according to the practice of moderate-to-vigorous physical activities (AF-mv). Students with systolic (SBP) and/or diastolic blood pressure (DBP) higher than the 95 th percentile according to sex, age and height or ≥120/80 were considered hypertensive. Statistical tests of t-Student, Chi-square, Mann-Whitney and binary logistic regression model were used, considering the significance level of p<0.05. Results: It was found that 40.5% of the students had AH, 35.11% were overweight (12.5% obese), 13.39% had high WC and 40.2% were considered insufficiently active in AF-mv. The chances of AH were related to high WC (OR = 6.11; 95% CI: 2.59¬-14.42) and overweight (OR = 2.91; 95% CI: 1.76-4.79). In addition, adolescents who practiced AF-mv had a lower risk of high DBP (OR = 0.33; 95% CI: 0.15-0.72). Conclusion: Central obesity was the best predictor of AH in children and adolescents, as well as general obesity and males. The practice of AF-mv demonstrated a protective effect on high DBP in schoolchildren.

O objetivo deste estudo foi comparar o perfil de estilo de vida e a prática de atividade física entre meninas e meninos. Participaram do estudo 336 escolares, de 11 a 17 anos de de idade (51,5% sexo feminino). Foram avaliados a estatura, massa corporal, maturação sexual e índice de massa corporal escore z (IMC-z). O nível de atividade física (AF) foi analisado pelo International Physical Activity Questionnaire (IPAQ). O estilo de vida foi avaliado por meio do questionário Perfil do Estilo de Vida Individual (PEVI), analisando ototal de escores dos cinco componentes, considerando-se como pontos de corte: >30 pontos = PEVI favorável e ≤30 pontos = PEVI desfavorável. Observou-se que 35,1% dos escolares foram considerados acima do peso, 74,78% não cumprem as recomendações de atividade física e 31,5% apresentaram PEVI desfavorável. Existiu diferença entre meninos e meninas para a prática de atividade física moderada e vigorosa (AFMV) (p = 0,048). Os meninos apresentaram melhor estilo de vida (p = 0,06) e praticam em média mais AF leve (p < 0,01), AF moderada (p < 0,01), AF vigorosa (p < 0,01) e AFMV (p < 0,01) do que meninas. Enquanto as meninas com PEVI favorável praticam em média mais AF leve do que aquelas com PEVI desfavorável (p < 0,001). Concluiu-se que meninos praticam mais AF na semana em relação às meninas, entretanto possuem menor preocupação com comportamentos preventivos e relacionamentos. A prática de AF leve foi maior em meninas com perfil de estilo de vida favorável.

ObjectiveStudy aimed to evaluate the effect and individual responsiveness after 12-weeks of high-intensity interval training (HIIT) and moderate-intensity of continuous training (MICT) on adiponectin, cardiometabolic risk factors and physical tness in overweight adolescents. MethodsParticipated 52 adolescents, both sexes, 11 and 16 years-old: HIIT (n = 13), MICT (n = 15) and control group (CG, n = 24). Body mass, height, waist circumference (WC), fat mass (FM), fat-free mass (FFM), blood pressure, high-density lipoprotein (HDL-c), low-density lipoprotein (LDL-c), triglycerides, insulin, adiponectin, and C-reactive protein (CRP) were evaluated. Body mass index z-score (BMI-z), waist-to-height ratio (WHtR), insulin resistance and insulin sensitivity were calculated. Resting heart rate (HR rest ), peak oxygen consumption (VO 2peak ), right handgrip strength (HGS-right), left handgrip strength (HGS-left) and abdominal resistance (ABD) was evaluated. HIIT session lasted around 35min and MICT of 60min of exercises on stationary bicycle, three times a weekday for 12-weeks. ANOVA, effect size, and prevalence of responders were used for statistical analysis. ResultsHIIT reduced BMI-z, WHtR, LDL-c and CRP, while increased of physical tness. MICT reduced HDL-c, while increased of physical tness. CG reduced FM, HDL-c, and CRP, while increased FFM and HR rest . Frequencies of respondents in HIIT were observed for CRP, VO 2peak , HGS-right and HGS-left.Frequencies of respondents in MICT were observed for CRP and HGS-right. Frequencies of no-respondents in CG were observed for WC, WHtR, CRP, HR rest and ABD. ConclusionInterventions with exercises were effective to adiposity, metabolic health, and physical tness improvements. Individual responses were observed in in ammatory process and physical tness, important changes in overweight adolescent's therapy.