This review presents lower body negative pressure (LBNP) as a unique tool to investigate
the physiology of integrated systemic compensatory responses to altered hemodynamic …

Respiratory activity phasically alters membrane potentials of preganglionic vagal and
sympathetic motoneurones and continuously modulates their responsiveness to stimulatory …

In healthy subjects, progressive beat-to-beat increases or decreases in systolic blood
pressure (SBP) ramps are not always accompanied by baroreflex-driven lengthening or …

Background One of the principal explanations for respiratory sinus arrhythmia is that it
reflects arterial baroreflex buffering of respiration-induced arterial pressure fluctuations. If …

Blood pressure and heart periods fluctuate at respiratory frequencies in healthy humans.
Some researchers (8, 23) explain this as a cause-and-effect relation: blood pressure …

Objective: The aims of this study were to determine the relationships between oscillations in
systolic blood pressure and heart period at different breathing frequencies and to investigate …

Early evidence from long-duration flights indicates general cardiovascular deconditioning,
including reduced arterial baroreflex gain. The current study investigated the spontaneous …

Background—Depressed baroreflex sensitivity obtained by means of a phenylephrine test
plays a prognostic role in patients with a previous myocardial infarction. Our purpose was to …

Although in physiological conditions RR interval and systolic arterial pressure (SAP) are
likely to interact in a closed loop, the traditional cross-spectral analysis cannot distinguish …

Aging affects baroreflex regulation. The effect of senescence on baroreflex control was
assessed from spontaneous fluctuations of heart period (HP) and systolic arterial pressure …