Ana Paula Sehn

Hyperuricemia is associated with low cardiorespiratory fitness levels and excess weight in schoolchildren

OBJECTIVE To evaluate the possible association between hyperuricemia and cardiorespiratory fitness levels/nutritional profile, grouped into a single variable, in schoolchildren. METHOD Cross-sectional study of 2335 students from Elementary schools, aged 7-17 years of both genders, stratified by conglomerates of a municipality in Southern Brazil. Body mass index (BMI) was calculated and cardiorespiratory fitness (CRF) was assessed by the 6-minute run/walk test. The BMI and CRF were grouped into a single variable, considering: (1) low and normal weight/fit; (2) low and normal weight/unfit; (3) overweight-obesity/fit; (4) overweight-obesity/unfit. The Poisson regression (prevalence ratio, PR) was used for the association between hyperuricemia and BMI/CRF ratio with 95% confidence intervals and differences were considered significant when p<0.05. RESULTS There is an association, although subtle, between the presence of hyperuricemia with low levels of CRF and the presence of excess weight, when grouped into a single variable. Boys and girls with this condition have higher prevalence of hyperuricemia (PR: 1.07; p=0.007 for boys; PR: 1.10; p<0.001 for girls). CONCLUSION Together, excess weight and low levels of cardiorespiratory fitness are associated with the presence of hyperuricemia in schoolchildren.

APTIDÃO CARDIORRESPIRATÓRIA, COMPOSIÇÃO CORPORAL DE ESCOLARES E ESTRUTURAS FÍSICAS PARA PRÁTICA DE ATIVIDADES FÍSICAS

This cross-sectional study aims to compare the level of cardiorespiratory fitness (CRF) and the body composition of 393 school children, with and without physical structure in the school environment for physical and sports activities in Santa Cruz do Sul - RS. Regarding CRF levels, it is observed that schoolchildren, both male and female, who study in study in schools with presence of sports structures in their environment have better values. There was no relation between infrastructure and body composition in school children. It’s concluded that schoolchildren of both sexes who study in schools with sports structures in their surroundings present higher levels of CRF compared to schoolchildren belonging to schools with a low presence of sports structures.

RELAÇÃO ENTRE INDICADORES ANTROPOMÉTRICOS E HEMATOLÓGICOS DE PAIS E SEUS FILHOS

A obesidade e a anemia sao duas das principais desordens nutricionais globais, chegando a niveis endemicos em muitas regioes do mundo. Devido as morbidades associadas a essas condicoes, o individuo enfrenta uma piora na qualidade de vida, que reflete no seu proprio bem-estar. Apesar de nao haver consenso entre os pesquisadores de quais medidas antropometricas seriam positivamente associadas a indicadores hematologicos, ha a certeza da importância da avaliacao hematologica, junto ao diagnostico de obesidade, considerando que ambos influenciam no desenvolvimento de risco cardiometabolico, tais como hipertensao e resistencia a insulina. Objetivo-se verificar possivel associacao entre o perfil hematologico e o estado nutricional de trabalhadores e seus filhos. Foi realizado um estudo transversal composto por uma amostra de 25 pais e seus respectivos filhos. Para verificar o estado nutricional de trabalhadores e seus filhos, avaliou-se indice de massa corporal (IMC), circunferencia da cintura (CC), circunferencia do quadril (CQ) e relacao cintura-quadril (RCQ), classificados de acordo com os pontos de corte para a populacao adulta e infanto-juvenil. Para os indicadores hematologicos, avaliou-se a hemoglobina (Hb) e o hematocrito (Hct), atraves de amostras de sangue, as quais foram armazenadas em tubos, contendo EDTA, mantidos em homogeneizador ate o momento da analise, realizada em equipamento automatizado Sysmex XS800i. A analise estatistica dos dados foi realizada atraves do software SPSS v. 20.0 (IBM, Armonk, NY, EUA). Foi utilizada a estatistica descritiva, atraves de frequencia e percentual, alem dos valores medios e desvio-padrao. Para testar a associacao entre os valores continuos dos indicadores antropometricos e hematologicos, foi utilizado o teste de correlacao de Spearman, sendo consideradas significativas as diferencas para p-0,05. Dos sujeitos analisados, 13 pais e 6 filhos apresentam excesso de peso (sobrepeso/obesidade), para o IMC e 9 pais e 3 filhos apresentam CC elevada. Com relacao aos indicadores hematologicos, as alteracoes foram mais relevantes entre os filhos, sendo que 11 apresentam hemoglobina aumentada e 7, hematocrito aumentado. Nao foi observada relacao entre os indicadores antropometricos e hematologicos de pais e seus filhos. Quando comparados os indicadores antropometricos com os indicadores hematologicos dos pais, observou-se relacao significativa entre RCQ com hemoglobina (p=0,002) e hematocrito (p=0,020). Entre os filhos, a CC associou-se com a hemoglobina (p=0,046) e com o hematocrito (p=0,016). Nao foi encontrada relacao dos indicadores antropometricos e hematologicos entre pais e filhos. Entre os pais, a RCQ associou-se com hemoglobina e hematocrito. A CC apresentou relacao com hemoglobina e hematocrito entre os filhos. Sugere-se a realizacao de novos estudos, com uma amostra maior, para confirmar os achados do presente estudo.

Artigo OriginalHyperuricemia is associated with low cardiorespiratory fitness levels and excess weight in schoolchildrenHiperuricemia está associada com baixos níveis de aptidão cardiorrespiratória e excesso de peso em escolares

Objective To evaluate the possible association between hyperuricemia and cardiorespiratory fitness levels/nutritional profile, grouped into a single variable, in schoolchildren.

Relationship between Cardiometabolic Parameters and Elevated Resting and Effort Heart Rate in Schoolchildren

Background Little has been studied on heart rate and its relationship with metabolic disorders. Objective To identify possible association between heart rate (HR) and metabolic disorders in children and adolescents. Methods This cross-sectional study evaluated 2.098 subjects, aged between 7 and 17 years. The variables evaluated were: HR, systolic (SBP) and diastolic blood pressure (DBP), pulse pressure (PP), double-product (DP), myocardial oxygen consumption (mVO2), lipids, glucose and uric acid levels, body mass index (BMI) and waist circumference (WC). The values of HR at rest and effort were divided into quartiles. The association between continuous values of HR and cardiometabolic indicators was tested by linear regression. Results LDL cholesterol presented a significantly higher mean (p = 0.003) in schoolchildren with resting HR greater or equal to 91 bpm, compared to students with less than 75 bpm. Compared with the quartiles of effort HR, SBP, DBP, glucose and uric acid presented high values when HR was greater or equal than 185 bpm. SBP, glucose and HDL cholesterol demonstrated a significant association with resting HR. Uric acid was observed as a predictor of increased effort HR. Conclusion Schoolchildren with a higher resting HR have higher mean of LDL cholesterol. For effort HR, there was an increase in blood pressure, glucose and uric acid levels. Uric acid has been shown to be a predictor of elevated effort HR.