Many studies have been conducted on heart rate variability. Variability in the heart signal of
two sequential beats is called heart rate variability (HRV). Short-and long-term variability …

The study of heart rate variability (HRV) provides a mean for observing the heart's ability to
respond to normal regulatory signals that affect its rhythm. The HRV analysis has proven …

Heart rate variability (HRV) is a reliable reflection of the many physiological factors
modulating the normal rhythm of the heart. In fact, they provide a powerful means of …

Heart rate variability [HRV] is a measure of the balance between sympathetic mediators of
heart rate that is the effect of epinephrine and norepinephrine released from sympathetic …

Beat-to-beat intervals of cardiac sinus rhythm are not constant but show complex and
continuous fluctuations called heart rate variability (HRV). Because HRV disappears with …

Heart rate variability (HRV) came into existence by observations of Hon and Lee in 1965
and since then has been a subject of prime importance in medical research. It is derived …

Autonomic nervous system plays an integral role in homeostasis. Autonomic modulation can
frequently be altered in patients with cardiac disorders as well as in patients with other …

The article discusses method for interpreting heart rate variability (HRV). HRV reflects
change in neurohormonal activation which is an important pathophysiologic factor in …

Heart rate variability (HRV) is a non-invasive method to measure cardiac autonomic
function. Impairments in HRV have been proposed as independent risk factor for increased …

Pathologic conditions are frequently associated with marked changes in heart rate (HR),
which itself influences its variability (HRV). Accordingly, some researchers consider the HR …