Associação entre frequência cardíaca e distúrbios metabólicos em crianças e adolescentes.

Abstract

Background: Little has been studied on heart rate and its relationship with metabolic syndromes. Objective: To identify any possible relation between heart rate and metabolic disorders in children and adolescents. Methods: In this study, a transversal character, were evaluated 2,098 subjects, of both sexes, aged between seven and 17 years, belonging to municipal, state and private schools in urban and rural area of the municipality of Santa Cruz do Sul, Rio Grande . South Variables used to assess this study were: heart rate and resting blood pressure, lipids and glucose levels, body mass index (BMI) and waist circumference (WC). Data were analyzed using SPSS program v. 23.0. The values of HR at rest and effort were divided into quartiles. The association between continuous values of HR at rest and effort with cardiometabolic indicators was tested by linear regression, adjusted for gender, age, body mass index and maturation stage. For all analyzes, the differences were considered significant at p <0.05. Results: It was observed that the LDL-C showed significant difference (p = 0.003) at rest in the fourth quartile over the average (88.68 mg / dL) when compared to the first quartile. The SBP, glucose and HDL-C showed significant association with HR at rest. Compared with quartile HR effort, SBP, DBP, glucose and uric acid showed elevated values in the fourth quartile. In the sample was observed uric acid as a predictor of increased HR effort. In the fourth quartile SBP, DBP, glucose and uric acid showed higher values when compared to the first quartile. Conclusion: Students with resting heart rate in the fourth quartile have higher average LDL cholesterol. For heart rate effort, school in quartiles showed an increase in systolic and diastolic blood pressure and glucose levels and uric acid. Furthermore, the uric acid was shown to be a predictor of heart rate elevation of effort.