Fluctuation analysis in intervals between heartbeats provides important indices related to
autonomic modulation of heart rate variability (HRV). These indices are considered …

Objective Heart rate variability (HRV) is an important non-invasive marker for the
assessment of an organism's autonomic physiological regulatory pathways. Lower HRV has …

Quantification of cardiac autonomic activity and control via heart rate (HR) and heart rate
variability (HRV) is known to provide prognostic information in clinical populations. Issues …

Alterations in the heart rate recovery and heart rate variability have been associated with
greater risk of mortality and early prognosis of cardiac diseases. Thus, strategies for …

Heart rate variability (HRV) is a relevant marker reflecting cardiac modulation by sympathetic
and vagal components of the autonomic nervous system (ANS). Although the clinical …

Heart rate variability (HRV) is a noninvasive, practical and reproducible measure of
autonomic nervous system function. Although the heart is reasonably stable, the time …

In spite of the large body of evidence suggesting Heart Rate Variability (HRV) alone or
combined with blood pressure variability (providing an estimate of baroreflex gain) as a …

The autonomous regulation of heart rate (HR) and its acute and chronic adaptation to
exercise constitutes a classical and important field of cardiovascular research. Since the end …

Background Reduced heart rate variability (HRV), a non-invasive marker of autonomic
dysfunction, and an unhealthy lifestyle are associated with an increased morbidity and …

Heart period constantly changes on a beat to beat basis, due to autonomic influences on the
sinoatrial node, and changes can be quantified as heart rate variability (HRV). In addition …