variability

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References in periodicals archive ?
Effects of cardiac resynchronization therapy on heart rate variability in patients with chronic systolic heart failure and intraventricular conduction delay.
Longitudinal assessment of heart rate variability in very low birth weight infants during their NICU stay.
Both decreased and increased heart rate variability on the standard 10-second electrocardiogram predict cardiac mortality in the elderly: the Rotterdam Study.
Heart rate variability was analyzed during the last 5 minutes of the pre-exercise ECG recording.
The aim of this study was to find differences in the autonomic regulation of the heart at the rest and during orthostasis between children with attention deficit/ hyperactivity disorder and healthy subjects using short-term heart rate variability analysis.
They were then fitted with portable electrocardiogram (ECG) recorders to measure their heart rate variability over 24 hours.
The Origin of Disease and Health, Heart Waves: The Single Solution to Heart Rate Variability and Ischemic Preconditioning.
Death or hospitalizations due to worsening HF are often preceded by an onset of atrial or ventricular arrhythmia and/or distinct trends of parameters such as activity and heart rate variability," commented Professor Gerhard Hindricks, MD, University Heart Center, Leipzig, Germany, and coordinating clinical investigator of IN-TIME.
By placing a fingertip on the sensing platform, Tinke measures and quantifies four key health parameters within seconds: heart rate, respiratory rate, blood oxygen levels and heart rate variability.
Additional biomarkers, including orthostatic blood pressure, vagal tone, and heart rate variability, also offer objective, in-the-moment data.
Transmission and evaluation of bio signals divers (pressure, heart rate, heart rate variability , etc.
The researchers' hypothesis is that the health effects arise through singing "imposing" a calm and regular breathing pattern which has a dramatic effect on heart rate variability - something that, in its turn, is assumed to have a favourable effect on health.