Research Library

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Keyword: Science HRV & Coherence

Heart Rate Variability: New Perspectives on Assessment of Stress and Health Risk at the Workplace

Published on: 04-02-2019

Introduction: Cardiovascular diseases are the highest cause of death in the world. Many of these deaths may be workplace related. Long hours at work seem to be influencing the increased risks of heart diseases. Workplace stress can be defined as the “discrepancies between the physiological demands within a workplace and the inability of employees to either manage or cope with such work demands.” The varied nature and perception of stress are exemplified from literature that shows stress being either a stimulus, or a response, or a stimulus–


Heart Rate Variability: New Perspectives on Physiological Mechanisms, Assessment of Self-regulatory Capacity, and Health Risk

Published on: 15-01-2015

Heart  rate  variability,  the  change  in the  time  intervals  between  adjacent heartbeats, is an emergent property of interdependent   regulatory   systems that  operates  on  different  time  scales to  adapt  to  environmental  and  psychological   challenges.   This   article briefly  reviews  neural  regulation  of the  heart  and  offers  some  new  perspectives on mechanisms underlying the very low frequency  rhythm  of heart rate variability. Interpretation of heart  rate  variability  rhythms  in  the context of health risk and physiological  and 


A healthy heart is not a metronome: an integrative reviewof the heart’s anatomy and heart rate variability

Published on: 30-09-2014

Heart rate variability (HRV), the change in the time intervals between adjacent heartbeats,is an emergent property of interdependent regulatory systems that operate on different time scales to adapt to challenges and achieve optimal performance. This article briefly reviews neural regulation of the heart, and its basic anatomy, the cardiac cycle, and the sinoatrial and atrioventricular pacemakers. The cardiovascular regulation center in the medulla integrates sensory information and input from higher brain centers, and afferent


Cardiac coherence, self-regulation, autonomic stability, and psychosocial well-being

Published on: 29-09-2014

The ability to alter one’s emotional responses is central to overall well-being and to effectively meeting the demands of life. One of the chief symptoms of events such as trauma, that overwhelm our capacities to successfully handle and adapt to them, is a shift in our internal baseline reference such that there ensues a repetitive activation of the traumatic event. This can result in high vigilance and over-sensitivity to environmental signals which are reflected in inappropriate emotional responses and autonomic nervoussystem dynamics. In this article


Heart rate variability biofeedback: how and why does it work?

Published on: 21-07-2014

In recent years there has been substantial support for heart rate variability biofeedback (HRVB) as a treatment for a variety of disorders and for performance enhancement (Gevirtz,2013). Since conditions as widely varied as asthma and depression seem to respond to this form of cardiorespiratory feedback training, the issue of possible mechanisms becomes more salient.The most supported possible mechanism is the strengthening of homeostasis in the baroreceptor (Vaschillo et al., 2002;Lehrer et al., 2003). Recently, the effect on the vagal afferent


The Effects of Emotions on Short‑Term Power Spectrum Analysis of Heart Rate Variability

Introduction: This study utilizes HRV analysis to examine a new method of intentionally shifting emotional states, and demonstrates that positive emotions lead to alterations in sympathovagal balance that may be beneficial in the treatment of hypertension. Anger, on the other hand, was shown to significantly increase sympathetic activation.
Summary: Salivary IgA, heart rate and mood were measured in thirty individuals before and after experiencing care or anger. Two methods