Spectral analysis of R-R and arterial pressure variabilities to assess sympatho-vagal interaction during mental stress in humans
- 1 January 1989
- journal article
- neural and-adrenergic-mechanism
- Published by Wolters Kluwer Health in Journal Of Hypertension
- Vol. 7 (6) , S14-15
- https://doi.org/10.1097/00004872-198900076-00004
Abstract
We tested the hypothesis that spectral analysis of the R-R interval and systolic arterial pressure variabilities allows assessment of the dynamic changes in neural control of the cardiovascular system in men undergoing mental stress testing. Mental arithmetic increased the low-frequency components of R-R and systolic arterial pressure, i.e. markers of sympathetic activity to the SA node and the vasculature, respectively; it also decreased the high frequency component of R-R variability, a marker of vagal activity. Spectral analysis of R-R and systolic arterial pressure variabilities may be used in the clinic to test the dynamic effects of mental stress on both sympathetic and vagal activities.Keywords
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