eCite Digital Repository

Endurance exercise improves heart rate complexity in the presence of vagal withdrawal in young adults


Perkins, EP and Jelinek, HF and de Jong, B and Cornforth, DJ and Tavainen, MP and Al-Aubaidy, HA, Endurance exercise improves heart rate complexity in the presence of vagal withdrawal in young adults, Computing in Cardiology, 42 Article 7411088. ISSN 2325-8861 (2015) [Refereed Article]


Copyright Statement

Licensed under Creative Commons Attribution 2.5 Generic (CC BY 2.5)

Official URL:

DOI: doi:10.1109/CIC.2015.7411088


Sudden cardiac death (SCD) has been reported during and following physical activity. SCD may be due to vagal withdrawal and/or sympathetic dominance associated with the exercise occurring at any time during, immediately following, or up to several days after exercise. Heart rate variability (HRV) describes the influence of the autonomic nervous system on heart rate. We assessed the immediate post-exercise influence of endurance training on HRV in young adults following the morning exercise bout and also on the same day in the afternoon. Linear domain parameter root mean square of successive RR interval differences (RMSSD) showed vagal withdrawal when analysed both immediately after the AM session and also when pre exercise HRV was compared to post exercise HRV during the early evening (median average change 6.6%) suggesting a possible increased risk of adverse cardiac events. However multiscale Rényi entropy indicated either no change immediately following the exercise for all scaling factors or an increase in HRV complexity of the heart rate for the afternoon recordings. Despite decreased vagal influence, endurance training may be protective for some individuals that retain a higher heart rate complexity in the presence of vagal withdrawal.

Item Details

Item Type:Refereed Article
Keywords:heart rate complexity, vagal withdrawal, exercise endurance
Research Division:Biomedical and Clinical Sciences
Research Group:Medical biochemistry and metabolomics
Research Field:Medical biochemistry - carbohydrates
Objective Division:Health
Objective Group:Clinical health
Objective Field:Clinical health not elsewhere classified
UTAS Author:Al-Aubaidy, HA (Dr Hayder Al-Aubaidy)
ID Code:103676
Year Published:2015
Deposited By:Medicine
Deposited On:2015-10-26
Last Modified:2016-05-18
Downloads:196 View Download Statistics

Repository Staff Only: item control page