Moderate-term reproducibility of heart rate variability during rest and light to moderate exercise in children

Article


Leicht, A. S. and Allen, G. D.. 2008. "Moderate-term reproducibility of heart rate variability during rest and light to moderate exercise in children ." Brazilian Journal of Medical and Biological Research. 41 (7), pp. 627-633. https://doi.org/10.1590/S0100-879X2008000700013
Article Title

Moderate-term reproducibility of heart rate variability during rest and light to moderate exercise in children

ERA Journal ID15298
Article CategoryArticle
AuthorsLeicht, A. S. (Author) and Allen, G. D. (Author)
Journal TitleBrazilian Journal of Medical and Biological Research
Journal Citation41 (7), pp. 627-633
Number of Pages7
Year2008
Place of PublicationSao Paulo, Brazil
ISSN0100-879X
1678-4510
Digital Object Identifier (DOI)https://doi.org/10.1590/S0100-879X2008000700013
Abstract

Previous studies have demonstrated the high reproducibility of heart rate variability (HRV) measures in adults while little information exists concerning HRV reproducibility in children. Subsequently, the aim of the current study was to examine the moderate-term reproducibility of heart rate and frequency domain measures of HRV during rest and light to moderate exercise in children. Ten healthy children (6 males, 4 females) aged between 7 and 12 years of age volunteered for this study with HRV recordings obtained during supine rest and three treadmill walking exercise work rates (≤60% maximum heart rate), initially and then 8 weeks later. Differences (P < 0.05) between variables were examined using paired t-tests or Wilcoxon signed rank tests while reliability and reproducibility were examined by intraclass correlation coefficients (ICC), coefficients of variation (CV), and mean bias ratio and ratio limits of agreement (LOA). Heart rate and all measures of HRV at rest and exercise were unchanged after 8 weeks. Significant ICC were documented primarily during rest (0.72-0.85) while weaker relationships (-0.02-0.87) were evident during exercise. A large range of CV was identified during rest (6-33%) and exercise (3-128%) while the ratio LOA were variable and substantial (1.04-2.73). Despite similar HRV over an 8-week period, variable ICC and sizable CV and ratio LOA indicate moderate to poor reproducibility of HRV in children, particularly during light to moderate exercise. Studies examining HRV in children should include age- or maturation stage-matched control participants to address the age-related change in HRV and inadequate HRV reliability.

Keywordsautonomic nervous system; heart rate; neural control; parasympathetic; reliability; exercise
ANZSRC Field of Research 2020420702. Exercise physiology
321399. Paediatrics not elsewhere classified
320101. Cardiology (incl. cardiovascular diseases)
Public Notes

All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License

Byline AffiliationsJames Cook University
Faculty of Education
Institution of OriginUniversity of Southern Queensland
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