The effect of ventilation on spectral analysis of heart rate and blood pressure variability during exercise

Document Type

Article

Publication Date

11-30-2004

Abstract

Heart rate variability (HRV) and systolic blood pressure variability (BPV) during incremental exercise at 50, 75, and 100% of previously determined ventilatory threshold (VT) were compared to that of resting controlled breathing (CB) in 12 healthy subjects. CB was matched with exercise-associated respiratory rate, tidal volume, and end-tidal CO2 for all stages of exercise. Power in the low frequency (LF, 0.04-0.15 Hz) and high frequency (HF, >0.15-0.4 Hz) for HRV and BPV were calculated, using time-frequency domain analysis, from beat-to-beat ECG and non-invasive radial artery blood pressure, respectively. During CB absolute and normalized power in the LF and HF of HRV and BPV were not significantly changed from baseline to maximal breathing. Conversely, during exercise HRV, LF and HF power significantly decreased from baseline to 100% VT while BPV, LF and HF power significantly increased for the same period. These findings suggest that the increases in ventilation associated with incremental exercise do not significantly affect spectral analysis of cardiovascular autonomic modulation in healthy subjects. © 2004 Elsevier B.V. All rights reserved.

Identifier

7544239762 (Scopus)

Publication Title

Respiratory Physiology and Neurobiology

External Full Text Location

https://doi.org/10.1016/j.resp.2004.08.002

ISSN

15699048

PubMed ID

15522706

First Page

91

Last Page

98

Issue

1

Volume

144

Grant

K12-HDO1097-01A1

Fund Ref

National Institutes of Health

This document is currently not available here.

Share

COinS