Psychological effects of yoga nidra in women with menstrual disorders: A systematic review of randomized controlled trials

Objective: To assess the effects of yoga nidra on psychological problems in women with menstrual disorders. Methods: A search was conducted using CINAHL, the Cochrane library, Embase, PsycINFO, and PubMed electronic databases, and using the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA), to identify randomized controlled trials (RCTs) published in any language up to and including July 2016, which reported the psychological effects of yoga nidra in women with menstrual disorders. Results: Two potential trials were identified and both were included in the review. A significant difference was observed between experimental and control groups in that anxiety and depression were significantly decreased in the experimental group when compared with the control group. Conclusions: There is evidence from two RCTs that yoga nidra may have favorable effects in terms of reducing psychological problems in women with menstrual disorders. (C) 2017 Elsevier Ltd. All rights reserved.