Heart rate variability (HRV) is a measure of the variation between consecutive heartbeats. It
provides a marker of the interplay between the parasympathetic and sympathetic nervous …

Vitamin D (VitD) insufficiency is a worldwide health problem and affects billions of people.
Spinal cord injury (SCI) patients seem more susceptible to developing suboptimal levels of …

Abstract Study Objectives: To evaluate vitamin D (25 (OH) D) levels in obstructive sleep
apnea syndrome (OSAS) and possible relationships to OSAS severity, sleepiness, lung …

Objective: This study evaluates cardiac autonomic neuropathy and heart rate variability
according to the vitamin D status in type 2 diabetes mellitus. Methods: A total of 163 patients …

Background Vitamin D deficiency is associated with the risk of cardiovascular diseases. We
aimed to investigate the serum vitamin D levels in children with vasovagal syncope (VVS) …

Abstract Background Vitamin D (VitD) has important prohormone functions in a wide range
of clinical processes. Although it is known that individuals with VitD deficiency have cardiac …

(1) Background: The vitamin D level in blood is one of the markers of the functional reserves
of the human body and can contribute to more successful adaptation in the Arctic.(2) …

Fundamento Estudos prévios têm sido inconsistentes em demonstrar efeitos
cardiovasculares benéficos da suplementação de vitamina D. Objetivo Avaliar efeitos da …

Heart rate variability (HRV) analysis provides an assessment of cardiac vagal tone and
consequently global cardiac health as well as systemic condition. In systemic diseases such …

Prematurity has been associated with impaired parasympathetic cardiac regulation later in
life. Changes in heart rate (HR) and heart rate variability (HRV) may indicate a risk for future …