scholarly journals Predicting Heart Rate Variability In Individuals With Insomnia

Author(s):  
Angela M. Lachowski

Insomnia is a highly prevalent condition, affecting up to 30% of adults. Research has shown that insomnia may be an independent predictor of heart disease, which is the second leading cause of death in Canada. Heart rate variability (HRV) is a proxy of autonomic activity often used to estimate current heart health. The present study investigated whether sleep disturbance and psychological variables were independently associated with HRV in a highly characterized (n = 140) sample of people with insomnia. Whereas sleep disturbance as assessed by polysomnogram was not found to predict HRV, worry was associated with HRV in rapid eye movement sleep. Results suggest that sleep does not relate to HRV; rather, worry may be important to HRV, though the nature of this association remains unclear. Previous studies showing that sleep and HRV are related may have been due to inadequate assessment of comorbid psychiatric symptoms.

2021 ◽  
Author(s):  
Angela M. Lachowski

Insomnia is a highly prevalent condition, affecting up to 30% of adults. Research has shown that insomnia may be an independent predictor of heart disease, which is the second leading cause of death in Canada. Heart rate variability (HRV) is a proxy of autonomic activity often used to estimate current heart health. The present study investigated whether sleep disturbance and psychological variables were independently associated with HRV in a highly characterized (n = 140) sample of people with insomnia. Whereas sleep disturbance as assessed by polysomnogram was not found to predict HRV, worry was associated with HRV in rapid eye movement sleep. Results suggest that sleep does not relate to HRV; rather, worry may be important to HRV, though the nature of this association remains unclear. Previous studies showing that sleep and HRV are related may have been due to inadequate assessment of comorbid psychiatric symptoms.


2017 ◽  
Vol 92 ◽  
pp. 64-73 ◽  
Author(s):  
Marcel A. Pawlowski ◽  
Mary Gazea ◽  
Bastian Wollweber ◽  
Martin Dresler ◽  
Florian Holsboer ◽  
...  

Author(s):  
Frank Zimmermann-Viehoff ◽  
Nico Steckhan ◽  
Karin Meissner ◽  
Hans-Christian Deter ◽  
Clemens Kirschbaum

We tested the hypothesis that a suggestive placebo intervention can reduce the subjective and neurobiological stress response to psychosocial stress. Fifty-four healthy male subjects with elevated levels of trait anxiety were randomly assigned in a 4:4:1 fashion to receive either no treatment (n = 24), a placebo pill (n = 24), or a herbal drug (n = 6) before undergoing a stress test. We repeatedly measured psychological variables as well as salivary cortisol, alpha-amylase, and heart rate variability prior to and following the stress test. The stressor increased subjective stress and anxiety, salivary cortisol, and alpha-amylase, and decreased heart rate variability (all P < .001). However, no significant differences between subjects receiving placebo or no treatment were found. Subjects receiving placebo showed increased wakefulness during the stress test compared with no-treatment controls ( P < .001). Thus, the suggestive placebo intervention increased alertness, but modulated neither subjective stress and anxiety nor the physiological response to psychosocial stress.


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