Associação entre indicadores cardiometabólicos e elevação da frequência cardíaca de repouso e esforço em escolares

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Abstract

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.

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da Silva, C. F., Burgos, M. S., da Silva, P. T., Burgos, L. T., Welser, L., Sehn, A. P., … Reuter, C. P. (2017). Associação entre indicadores cardiometabólicos e elevação da frequência cardíaca de repouso e esforço em escolares. Arquivos Brasileiros de Cardiologia, 109(3), 191–198. https://doi.org/10.5935/abc.20170103

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