TY - JOUR
T1 - The effect of ventilation on spectral analysis of heart rate and blood pressure variability during exercise
AU - Bartels, Matthew N.
AU - Jelic, Sanja
AU - Ngai, Pakkay
AU - Gates, Gregory
AU - Newandee, Douglas
AU - Reisman, Stanley S.
AU - Basner, Robert C.
AU - De Meersman, Ronald E.
N1 - Funding Information:
Support provided by VIDDA Foundation, NIH K12-HDO1097-01A1 and the Jacob and Valeria Langeloth Foundation.
PY - 2004/11/30
Y1 - 2004/11/30
N2 - 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.
AB - 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.
KW - Blood pressure variability
KW - Exercise
KW - Heart rate variability
KW - Spectral analysis
KW - Ventilation
UR - http://www.scopus.com/inward/record.url?scp=7544239762&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=7544239762&partnerID=8YFLogxK
U2 - 10.1016/j.resp.2004.08.002
DO - 10.1016/j.resp.2004.08.002
M3 - Article
C2 - 15522706
AN - SCOPUS:7544239762
SN - 1569-9048
VL - 144
SP - 91
EP - 98
JO - Respiratory Physiology and Neurobiology
JF - Respiratory Physiology and Neurobiology
IS - 1
ER -