Reproducibility of resting heart rate variability with short sampling periods. Academic Article

abstract

• The purpose of this study was to determine whether resting heart rate variability (HRV) is reproducible with short sampling measurement periods using an office-based personal computer measurement system. Eight healthy active women participated in ECG analyses on 2 days within 1 week under controlled environmental and physiological conditions. After they rested for 10 minutes, a 10-min ECG was recorded. HRV was determined from a 2.5- and 5-min sample period using both time domain variables (meanRR and SDNN) and frequency domain variables (LF, HF, LF:HF). Repeated measures ANOVA found no significant differences between Day 1 and Day 2 for either sampling period (p > or = 0.23). For both the 2.5- and 5-min sampling periods, the intraclass correlations between days for the time domain variables showed good reproducibility (R = 0.86-0.90). The reproducibility of the frequency domain variable was only average (R = 0.67-0.96), with the LF:HF ratio yielding the higher R values.

authors

• Lightfoot, J Timothy

published proceedings

• Can J Appl Physiol

author list (cited authors)

• Marks, B. L., & Lightfoot, J. T.

citation count

• 35

complete list of authors

• Marks, BL||Lightfoot, JT

publication date

• August 1999

publisher

• Canadian Science Publishing  Publisher

published in

• Applied Physiology, Nutrition and Metabolism  Journal

keywords

• Adult
• Analysis Of Variance
• Electrocardiography
• Female
• Fourier Analysis
• Heart Rate
• Humans
• Microcomputers
• Reproducibility Of Results
• Signal Processing, Computer-Assisted

PubMed Central ID

• 10470450

Digital Object Identifier (DOI)

• 10.1139/h99-026

start page

• 337

end page

• 348

volume

• 24

issue

• 4