Publisher Summary At rest, the heart rate increases on inspiration and decreases on
expiration. This oscillation in heart rate is called the respiratory sinus arrhythmia (RSA). A …

Background The primary mechanisms of respiratory sinus arrhythmia (RSA) are understood
to be the modulation of cardiac vagal efferent activity by the central respiratory drive and the …

Respiratory sinus arrhythmia (RSA) is used as a noninvasive measure of vagal cardiac
input, but its causative mechanisms in humans remain undetermined. We compared the …

1. The influence of central inspiratory drive on heart rate variability was investigated in
young human subjects using power spectral analysis of RR intervals. 2. The area of the high …

During inspiration the heart rate (HR) increases and during expiration it decreases.
Contribution of respiratory sinus arrhythmia (RSA) to spontaneous heart rate variability …

Respiratory sinus arrhythmia (RSA) is heart rate variability in synchrony with respiration, by
which the RR interval on an ECG is shortened during inspiration and prolonged during …

Respiratory sinus arrhythmia (RSA) of healthy humans is dependent on multiple factors like
heart rate itself, blood pressure, stroke volume and sympatho-vagal tone. Respiration is a …

Background We investigated whether respiratory sinus arrhythmia (RSA) in healthy humans
originated from central neuronal oscillations or from peripheral baroreceptors responding to …

Respiratory sinus arrhythmia (RSA) has received much attention in recent years due to the
large body of evidence indicating that variations in this phenomenon represent alterations in …

Respiratory sinus arrhythmia (RSA) may improve the efficiency of pulmonary gas exchange
by matching the pulmonary blood flow to lung volume during each respiratory cycle. If so, an …