Heart rate (HR) is strongly associated with both peripheral and central blood pressures. This
association has implications in hypertension (HTN) prognosis and management. Elevated …

Heart rate variability (HRV), the beat-to-beat variation in either heart rate or the duration of
the R–R interval–the heart period, has become a popular clinical and investigational tool …

Indices of heart rate variability (HRV) provide a window onto autonomic modulation of the
heart. HRV indices, determined in either the time or frequency domain, are closely related …

Heart-rate variability (HRV) is frequently introduced as mirroring imbalances within the
autonomous nerve system. Many investigations are based on the paradigm that increased …

Heart rate variability (HRV) has become a popular method for the studies of physiologic
mechanisms responsible for the control of heart rate fluctuations, in which the autonomic …

Aim The aim of the study was to compare heart rate variability (HRV) of newly diagnosed
essential hypertensive subjects with controls. Methods The study was conducted on 120 …

Purpose. To explore the relationship between blood pressure control and autonomic
nervous function assessing by heart rate variability (HRV) and heart rate turbulence (HRT) in …

THE RHYTHM OF THE HEART has not only fascinated cardiologists but also inspired poets
and musicians. Indeed, the periodic beat of the heart was used to define the speed of music …

Heart rate variability (HRV) is a useful noninvasive tool to assess cardiac autonomic
function. The purpose of this study was to (1) compare measures of HRV between …

There are various factors affecting autonomic regulation of the heart, including but not
limited to respiration, thermoregulation, humoral regulation (renin-angiotensin system) …