Paolo Pizzinelli

TL;DR: The spontaneous beat-to-beat oscillation in R-R interval during control recumbent position, 90° upright tilt, controlled respiration and acute and chronic β-adrenergic receptor blockade was analyzed, indicating that sympathetic nerves to the heart are instrumental in the genesis of low-frequency oscillations in R -R interval.

TL;DR: 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.

TL;DR: Spectral analysis of cardiovascular variabilities suggests that in man and in conscious dogs psychological challenges induce a profound re-arrangement of neural control of the circulation, which appears to be characterised by sympathetic predominance and which can be monitored by this technique.

TL;DR: Work stress may increase cardiovascular risk either indirectly, by inducing unhealthy life styles, or directly, by affecting the autonomic nervous system and arterial pressure as discussed by the authors, and a simple onsite stress management program based on cognitive restructuring and relaxation training could reduce the level of stress symptoms, revert stress-related autonomic system dysregulation, and lower arterial blood pressure.

TL;DR: In the conscious dog, aortic distension within physiological ranges induces a potent pressor sympathetic reflex with positive feedback characteristics, which not only occurs in the presence of functioning baroreflexes, but is also capable of reducing their sensitivity.