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Background  Insomnia is among the most prevalent of the sleep-related disorders. Insomnia disorder is associated with a brain hyperarousal state manifested by abnormal regional brain activity and resting state functional connectivity. Acupuncture improves sleep quality and modulates the hyperarousal state; however, the underlying neurobiological basis for improved sleep quality is poorly understood. The purpose of this clinical trial is to study the efficacy of acupuncture in the treatment of insomnia disorder. In addition, the neural mechanism by which acupuncture affects insomnia disorder will be explored using resting-state functional magnetic resonance imaging (rs-fMRI) and neuropsychological parameters.    Methods and design  A randomized, patient- and assessor-blinded trial will be conducted. We will randomize (in a 1:1 ratio) 60 eligible patients with insomnia disorder into a real acupuncture group or a sham acupuncture group. Interventions will be administered three times per week over a 4-week period, with an 8-week follow-up period. The healthy control group will consist of 30 age- and sex-matched healthy individuals who sleep well without any treatment intervention.  All participants will undergo neuropsychological and rs-fMRI evaluations. The change in Pittsburgh Sleep Quality Index (PSQI) scores is the primary outcome parameter. The secondary outcome parameters include the Hyperarousal scale (HAS), rs-fMRI measurements, the Fatigue scale-14 (FS-14), the Hamilton depression scale (HAMD), the Hamilton anxiety scale (HAMA), a sleep diary, and an actigraph.  Assessment of all parameters will be performed at baseline, post-treatment, and during follow-up. Analyses will be implemented based on intention-to-treat.    Discussion  The study results will be used to clarify the effectiveness and elucidate the mechanism by which acupuncture improves sleep quality in patients with insomnia disorder.    Trial registration  Chinese Clinical Trials Register,  ChiCTR1800015282 . Registered on 20 March 2018.

trials

Acupuncture for patients with insomnia disorder using resting-state functional magnetic resonance imaging: a protocol for a randomized controlled trial