Heart rate recovery after treadmill electrocardiographic exercise stress test and 24-hour heart rate variability in healthy individuals

Heart rate recovery after treadmill electrocardiographic exercise stress test is modulated by the autonomic nervous system. Analysis of heart rate variability can provide useful information about autonomic control of the cardiovascular system. The aim of the study was to test the hypothesis of assoc...

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Bibliographic Details
Published in:Arquivos brasileiros de cardiologia 2008-06, Vol.90 (6), p.380-385
Main Authors: Antelmi, Ivana, Chuang, Eliseu Yung, Grupi, Cesar José, Latorre, Maria do Rosário Dias de Oliveira, Mansur, Alfredo José
Format: Article
Language:eng ; por
Subjects:
Adolescent
Adult
Age Factors
Aged
Aged, 80 and over
Autonomic Nervous System - physiology
Exercise Test
Female
Heart Rate - physiology
Humans
Male
Middle Aged
Sex Factors
Time Factors
Young Adult
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Summary:Heart rate recovery after treadmill electrocardiographic exercise stress test is modulated by the autonomic nervous system. Analysis of heart rate variability can provide useful information about autonomic control of the cardiovascular system. The aim of the study was to test the hypothesis of association between heart recovery after treadmill electrocardiographic exercise test and heart rate variability. We studied 485 healthy individuals aged 42+/- 12.1 (range 15-82) years, 281(57.9%) women, submitted to treadmill electrocardiographic exercise stress tests and heart rate variability evaluations over time (SDNN, SDANN, SDNNi, rMSSD, pNN50) and frequency (LF, HF, VLF, LF/HF ratio) domains in 24-hour ambulatory electrocardiographic monitoring. Heart rate recovery was 30+/- 12 beats in the 1st minute and 52+/- 13 beats in the 2nd minute after exercise. Younger individuals recovered faster from the 2nd to the 5th minute after exercise (r= 0.19-0.35, P< 0.05). Recovery was faster in women than in men (4+/- 1.1 beats lower in the 1st minute, p
ISSN:1678-4170
DOI:10.1590/S0066-782X2008000600005