Abstract
We tested the hypothesis that spectral analysis of the R-R in-terval and systolic arterial pressure variabilities allows assess-ment of the dynamic changes in neural control of the cardio-vascular 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.
Original language | English |
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Pages (from-to) | S14-S15 |
Journal | Journal of Hypertension, Supplement |
Volume | 7 |
Publication status | Published - 1989 |
Keywords
- Mental stress
- Spectral analysis
- Sympathetic activity
- Vagal activity
ASJC Scopus subject areas
- Physiology
- Cardiology and Cardiovascular Medicine
- Internal Medicine
- Endocrinology