Variabilidade da frequência cardíaca nas diferentes fases da vida: um estudo exploratório

Abstract

Introduction: The analysis of heart rate variability (HRV) is an indicator of health information, however there are controversies about values that serve as a reference for different ages. Aim: of this study is to verify the rates in healthy individuals of different age groups. Methods: Study with a retrospective cross-sectional design, 40 healthy individuals selected from studies on the HRV developed in the Laboratory of Studies on Physical Training Applied to Health (2010 – 2021). Grouped into 10 people, both sexes, matched for age and body mass index (children, adolescents, adults and elderly), following WHO criteria, 2019. Parameters evaluated: low frequency (BF), normalized high frequency (HF) and the cardiac autonomic balance (BF/AF). Results: The values of BF and AF in the elderly group diverged from the group of children, adolescents and adults. However, the BF/AF did not diverge between the evaluated groups. Conclusion: HRV is influenced by age where, in the elderly, there is an increase in sympathetic activity and a reduction in parasympathetic activity.