Modulação autonômica de adolescentes com sobrepeso e obesidade em recuperação ao exercício aeróbico submáximo

Cicero Jonas R. Benjamim

Cicero Jonas R. Benjamim Department of Internal Medicine, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil.

Keywords: Obesity, Overweight, Cardiovascular physiology, Autonomic nervous sytem, Physical exercise

Abstract

Post-exercise cardiovascular analysis is considered a reliable tool in the analysis of cardiovascular risk. This study aimed to investigate the recovery of nonlinear dynamics of heart rate variability (HRV) after submaximal aerobic exercise in overweight and obese adolescents. A total of 40 adolescents between 10 and 17 years of age participated in the research, of which 20 were overweight (10 women and 10 men) and 20 were obese (10 women and 10 men). The sample was collected from volunteers with a nutritional diagnosis of obesity and overweight, presenting a classification of Body Mass Index (BMI) according to gender and age (z-scores). For overweight >z-score +1 and <z-score +2, for obesity >z-score +2 were considered. Adolescents' heartbeats were recorded at rest (15-20min), during exercise (last 5 minutes) and after exercise (Rec1: 5-10min; Rec2: 15-20min) at recording intervals of 5 minutes each. Symbolic analysis of HRV was applied to analyze the modulation of the sympathetic (0V%, 1V%) and parasympathetic (2LV%, 2ULV%) components. Overweight adolescents had a similar response to those with obesity in the transition phase between rest and exercise. In the analysis of recovery of non-linear HRV indices, groups of overweight and obese adolescents also showed similar responses. Symbolic and non-linear analysis of heart rate variability showed that overweight adolescents have similar recovery responses to exercise as those with obesity.

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Autonomic modulation of overweight and obesity adolescents in recovery from submaximum aerobic exercise

Abstract

References