Heart rate variability (HRV) refers to various methods of assessing the beat-to-beat variation
in the heart over time, in order to draw inference on the outflow of the autonomic nervous …

Cardiac autonomic neuropathy (CAN) is an often overlooked and common complication of
diabetes mellitus. CAN is associated with increased cardiovascular morbidity and mortality …

Portable and wireless devices that collect physiological data are becoming more and more
sought after in clinical and psychophysiological research as technology swiftly advances …

A consistent link appears to exist between predominance of vagal or sympathetic activity
and predominance of HF or LF oscillations, respectively: RR variability contains both of …

Background The early hours of the morning after awakening are associated with an
increased frequency of events such as myocardial infarction and ischemic stroke. The …

Electrocardiographic RR intervals fluctuate cyclically, modulated by ventilation, baroreflexes,
and other genetic and environmental factors that are mediated through the autonomic …

White adipose tissue (WAT) is innervated by the sympathetic nervous system (SNS) and its
activation is necessary for lipolysis. WAT parasympathetic innervation is not supported. Fully …

BACKGROUND The powers of the low-frequency (LF) and high-frequency (HF) oscillations
characterizing heart rate variability (HRV) appear to reflect, in their reciprocal relationship …

The last two decades have witnessed the recognition of a significant relationship between
the autonomic nervous system and cardiovascular mortality, including sudden cardiac …

In most persons, blood pressure (BP) rises slowly during late sleep, increases rapidly upon
morning awakening and commencement of diurnal activity, exhibits two–morning and …