Heart rate variability in healthy adolescents at rest

Authors

  • Franciele Marques Vanderlei UNESP; Faculdade de Ciências e Tecnologia; Departamento de Fisioterapia
  • Renata Claudino Rossi UNESP; Faculdade de Ciências e Tecnologia; Departamento de Fisioterapia
  • Naiara Maria de Souza UNESP; Faculdade de Ciências e Tecnologia; Departamento de Fisioterapia
  • Denise Aparecida de Sá UNESP; Faculdade de Ciências e Tecnologia; Departamento de Fisioterapia
  • Tatiana Mangetti Gonçalves UNESP; Faculdade de Ciências e Tecnologia; Departamento de Fisioterapia
  • Carlos Marcelo Pastre UNESP; Faculdade de Ciências e Tecnologia; Departamento de Fisioterapia
  • Luiz Carlos de Abreu Faculdade de Medicina do ABC; Laboratório de Escrita Científica
  • Vitor Engrácia Valenti UNESP; Faculdade de Filosofia e Ciências; Departamento de Fonoaudiologia
  • Luiz Carlos Marques Vanderlei UNESP; Faculdade de Ciências e Tecnologia; Departamento de Fisioterapia

DOI:

https://doi.org/10.7322/jhgd.44947

Keywords:

heart rate, autonomic nervous system, cardiology, adolescent

Abstract

OBJECTIVE: to describe the cardiac autonomic function in healthy adolescents between 13 and 18 years old. METHODS: data from 93 adolescents, of both sexes, were analyzed; they were divided into three groups according to age. Group A 13-14 years old (n=26), Group B 15-16 years old (n = 30) and Group C 17-18 years old (n = 17). The protocol consisted of raising the heart rate, beat by beat for twenty minutes of rest in supine position with spontaneous breathing. The cardiac autonomic behavior analysis was performed by the method of heart rate variability (HRV) through the indices of the Poincaré plot (SD1, SD2 and ratio SD1/SD2) and its qualitative analysis and indices in linear time domain (RMSSD and SDNN) and frequency (LFnu, HFnu and LF/HF). One-way ANOVA test or Kruskal-Wallis test was used for comparison between groups, with a significance level of 5%. RESULTS: there was no significant difference in none of the indices compared the three groups. In addition,visual analysis of Poincaré plot has observed for all age groups large dispersion of RR intervals, indicating that these groups have good HRV. CONCLUSION: there were no changes in HRV in the different age groups analyzed, however the result allowed to establish a standard for each group that was studied, becomes an important tool for comparison of cardiac autonomic function between healthy and patients subjects or in different areas.

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Published

2012-08-01

Issue

Vol. 22 No. 2 (2012)

Section

Original Research

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