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      Journal of Pain Research (submit here)

      This international, peer-reviewed Open Access journal by Dove Medical Press focuses on reporting of high-quality laboratory and clinical findings in all fields of pain research and the prevention and management of pain. Sign up for email alerts here.

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      The effects of slow-paced versus mechanically assisted breathing on autonomic function in fibromyalgia patients

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          Abstract

          Paced breathing has shown efficacy in fibromyalgia (FM), but the mechanisms associated with symptom change are largely unknown. We investigated whether changes in respiratory rate (RR) alone resulted in autonomic changes during normal, paced, and mechanically assisted breathing in untrained FM patients and controls. Participants included 20 FM patients and 14 controls matched for age and body mass index. During a single visit, participants completed three 15-minute breathing sessions: 1) normal breathing, 2) slow-paced breathing, and 3) mechanically assisted breathing (continuous positive airway pressure) while supine. Continuous blood pressure and electrocardiogram were recorded, and measures of heart rate variability (HRV) and spontaneous baroreceptor sensitivity (sBRS) were calculated. During normal breathing, FM patients had higher heart rate (HR), but lower HRV and sBRS variables compared to controls with no difference in RR. Compared to the paced breathing condition, FM patients had significantly lower HR with higher HRV and sBRS variables during mechanically assisted breathing, despite no significant change in RR. Mechanically assisted breathing provided greater benefits in autonomic function than paced breathing in untrained FM patients. Future research will be needed to elucidate the central pathways involved in these autonomic changes and whether training in paced breathing can eventually replicate the results seen in mechanically assisted patients.

          Most cited references36

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

          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 pathway to the frontal cortical areas has been proposed. In this article, we review these and other possible mechanisms that might explain the positive effects of HRVB.
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            Catastrophizing and pain in arthritis, fibromyalgia, and other rheumatic diseases.

            Pain is among the most frequently reported, bothersome, and disabling symptoms described by patients with osteoarthritis, rheumatoid arthritis, fibromyalgia, and other musculoskeletal conditions. This review describes a growing body of literature relating catastrophizing, a set of cognitive and emotional processes encompassing magnification of pain-related stimuli, feelings of helplessness, and a generally pessimistic orientation, to the experience of pain and pain-related sequelae across several rheumatic diseases. We reviewed published articles in which pain-related catastrophizing was assessed in the context of one or more rheumatic conditions. Because much of the available information on catastrophizing is derived from the more general chronic pain literature, seminal studies in other disease states were also considered. Catastrophizing is positively related, in both cross-sectional and prospective studies across different musculoskeletal conditions, to the reported severity of pain, affective distress, muscle and joint tenderness, pain-related disability, poor outcomes of pain treatment, and, potentially, to inflammatory disease activity. Moreover, these associations generally persist after controlling for symptoms of depression. There appear to be multiple mechanisms by which catastrophizing exerts its harmful effects, from maladaptive influences on the social environment to direct amplification of the central nervous system's processing of pain. Catastrophizing is a critically important variable in understanding the experience of pain in rheumatologic disorders as well as other chronic pain conditions. Pain-related catastrophizing may be an important target for both psychosocial and pharmacologic treatment of pain.
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              Resonant frequency biofeedback training to increase cardiac variability: rationale and manual for training.

              Heart rate and blood pressure, as well as other physiological systems, among healthy people, show a complex pattern of variability, characterized by multifrequency oscillations. There is evidence that these oscillations reflect the activity of homeostatic reflexes. Biofeedback training to increase the amplitude of respiratory sinus arrhythmia (RSA) maximally increases the amplitude of heart rate oscillations only at approximately 0.1 Hz. To perform this task people slow their breathing to this rate to a point where resonance occurs between respiratory-induced oscillations (RSA) and oscillations that naturally occur at this rate, probably triggered in part by baroreflex activity. We hypothesize that this type of biofeedback exercises the baroreflexes, and renders them more efficient. A manual is presented for carrying out this method. Supporting data are provided in Lehrer, Smetankin, and Potapova (2000) in this issue.
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                Author and article information

                Journal
                J Pain Res
                J Pain Res
                Journal of Pain Research
                Journal of Pain Research
                Dove Medical Press
                1178-7090
                2017
                08 December 2017
                : 10
                : 2761-2768
                Affiliations
                [1 ]Department of Psychology, Navy Medicine Professional Development Center, Walter Reed National Military Medical Center, Uniformed Services University of the Health Sciences, Bethesda, MD
                [2 ]Department of Physical Medicine and Rehabilitation
                [3 ]Department of Anesthesiology, Division of Pain Medicine
                [4 ]Department of Medicine
                [5 ]Department of Physiology, Mayo Clinic, Rochester, MN, USA
                Author notes
                Correspondence: John E Schmidt, Department of Psychology, Navy Medicine Professional Development Center, Walter Reed National Military Medical Center, Uniformed Services University of the Health Sciences, 8955 Wood Road, Bethesda, MD 20889-5628, USA, Tel +1 301 319 8193, Email John.e.schmidt.civ@ 123456mail.mil
                Article
                jpr-10-2761
                10.2147/JPR.S139642
                5727106
                3b1fc6d2-979b-4811-ac5a-72601bbd83c7
                © 2017 Schmidt et al. This work is published and licensed by Dove Medical Press Limited

                The full terms of this license are available at https://www.dovepress.com/terms.php and incorporate the Creative Commons Attribution – Non Commercial (unported, v3.0) License ( http://creativecommons.org/licenses/by-nc/3.0/). By accessing the work you hereby accept the Terms. Non-commercial uses of the work are permitted without any further permission from Dove Medical Press Limited, provided the work is properly attributed.

                History
                Categories
                Original Research

                Anesthesiology & Pain management
                fibromyalgia,heart rate variability,baroreceptor sensitivity,paced breathing,autonomic activity,mechanically assisted breathing

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