Research Article Effects of Temperature on Chronic Trapezius Myofascial Pain Syndrome during Dry Needling Therapy

which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. The purpose of this study was to investigate the effects of temperature on chronic trapezius myofascial pain syndrome during dry needling therapy. Sixty patientswere randomized into two groups of dry needling (DN) alone (groupA) andDNcombinedwith heat therapy group (group B). Each patient was treated once and the therapeutic effect was assessed by the visual analogue scale (VAS), pressure pain threshold (PPT), and the 36-item short form health survey (SF-36) at seven days, one month, and three months after treatment. Evaluation based onVAS andPPT showed that the pain of patients in groupsA andBwas significantly