Heart rate variability in patients with somatic symptom disorders and functional somatic syndromes: A systematic review and meta-analysis
Journal
Neuroscience and biobehavioral reviews
Journal Volume
112
Start Page
336
End Page
344
ISSN
0149-7634
Date Issued
2020-05
Author(s)
Abstract
This research is aimed to systematically review heart rate variability (HRV) findings of functional somatic syndromes (FSSs) and somatic symptom disorders (SSDs), and to compare the HRV values between FSSs/SSDs patients and healthy individuals. We included clinical studies assessing HRV (including baseline HRV and HRV reactivity) in FSSs/SSDs and healthy participants. We searched PubMed, Embase, PsycINFO, MEDLINE, and Web of Science databases from the earliest available date to June 2019. Eighty-five studies comprising 3242 FSSs/SSDs patients and 2321 controls were included in the main meta-analysis; the baseline HRV value was significantly lower compared to healthy individuals (Hedges'g, -0.43; 95 % CI, -0.54 to -0.30; p < .001), with the largest effect size in fibromyalgia patients. A significant lower HRV was also found for total variability (Hedges'g, -0.56; 95 % CI, -0.77 to -0.36) and specific parasympathetic indices (Hedges'g, -0.41, 95 % CI; -0.54 to -0.30). HRV reactivity was significantly lower in FSSs/SSDs patients (Hedges'g, -0.42; 95 % CI, -0.64 to -0.20). Our results support the notion that FSSs/SSDs patients have significantly lower HRV than healthy individuals.
Subjects
Chronic fatigue syndrome
Fibromyalgia
Heart rate variability
Irritable bowel syndrome
Somatic symptom disorder
SDGs
Type
review