Please use this identifier to cite or link to this item: http://hdl.handle.net/1893/26742
Appears in Collections:Psychology Journal Articles
Peer Review Status: Refereed
Title: Heart rate variability in insomnia patients: A critical review of the literature
Author(s): Dodds, Kirstie L
Miller, Christopher
Kyle, Simon D
Marshall, Nathaniel S
Gordon, Christopher J
Keywords: Autonomic nervous system
Heart rate variability
Hyperarousal
Insomnia
Review
Issue Date: Jun-2017
Citation: Dodds KL, Miller C, Kyle SD, Marshall NS & Gordon CJ (2017) Heart rate variability in insomnia patients: A critical review of the literature, Sleep Medicine Reviews, 33, pp. 88-100.
Abstract: Heart rate variability (HRV) is an objective marker that provides insight into autonomic nervous system dynamics. There is conflicting evidence regarding the presence of HRV impairment in insomnia patients. Web-based databases were used to systematically search the literature for all studies that compared the HRV of insomnia patients to controls or reported the HRV of insomnia patients before and after an intervention. 22 relevant papers were identified. Study characteristics were summarised, HRV measures were extracted and a risk of bias assessment for each study was performed. We were limited in our ability to synthesise outcome measures and perform meta-analyses due to considerable differences in patient (and control) selection, study protocols, measurement and processing techniques and outcome reporting. Risk of bias was deemed to be high in the majority of studies. As such, we cannot confirm that HRV is reliably impaired in insomnia patients nor determine the HRV response to interventions. Whilst HRV impairment in insomnia is a widely accepted concept, it is not supported by empirical evidence. Large longitudinal studies incorporating 24-hour recordings are required to elucidate the precise nature of HRV dynamics in insomnia patients.
DOI Link: http://dx.doi.org/10.1016/j.smrv.2016.06.004
Rights: Accepted refereed manuscript of: Dodds KL, Miller C, Kyle SD, Marshall NS & Gordon CJ (2017) Heart rate variability in insomnia patients: A critical review of the literature, Sleep Medicine Reviews, 33, pp. 88-100. DOI: 10.1016/j.smrv.2016.06.004 © 2016, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/

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