PURPOSE: The present study examined the effects of treatment using PNF extension techniques on the pain, pressure pain, and neck and shoulder functions of the upper trapezius muscles of myofascial pain syndrome (MPS) patients. SUBJECTS: Thirty-two patients with MPS in the upper trapezius muscle were divided into two groups: a PNF group (n = 16), and a control group (n = 16) METHODS: The PNF group received upper trapezius muscle relaxation therapy and shoulder joint stabilizing exercises. Subjects in the control group received only the general physical therapies for the upper trapezius muscles. Subjects were measured for pain on a visual analog scale (VAS), pressure pain threshold (PPT), the neck disability index (NDI), and the Constant-Murley scale (CMS). RESULTS: None of the VAS, PPT, and NDI results showed significant differences between the groups, while performing postures, internal rotation, and external rotation among the CMS items showed significant differences between the groups. CONCLUSION: Exercise programs that apply PNF techniques can be said to be effective at improving the function of MPS patients.

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