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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Immediate Effect of Acupuncture on Electromyographic Activity of the Upper Trapezius Muscle and Pain in Patients With Nonspecific Neck Pain: A Randomized, Single-Blinded, Sham-Controlled, Crossover Study

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Penimpedo Calamita, Simone Aparecida [1] ; Biasotto-Gonzalez, Daniela Aparecida [1] ; De Melo, Nivea Cristina [2] ; Fumagalli, Marco Antonio [3] ; Amorim, Cesar Ferreira [1] ; Fidelis de Paula Gomes, Cid Andre [1] ; Politti, Fabiano [1]
Total Authors: 7
[1] Nove Julho Univ, Phys Therapy Dept, Postgrad Program Rehabil Sci, Sao Paulo - Brazil
[2] Nove Julho Univ, Phys Therapy Dept, Sao Paulo - Brazil
[3] Nove Julho Univ, Dept Mech Engn, Sao Paulo - Brazil
Total Affiliations: 3
Document type: Journal article
Web of Science Citations: 2

Objective: The objective of this study was to assess changes in upper trapezius myoelectric activity and pain in patients with nonspecific neck pain after a single session of acupuncture (ACP). Methods: A blinded randomized clinical trial was conducted. Fifteen patients with nonspecific neck pain and 15 healthy participants were enrolled in a randomized, single-blinded, crossover study. Each participant was subjected to a single session of ACP and sham acupuncture (SACP). The electromyography (EMG) signal of the upper trapezius muscle was recorded during different step contractions of shoulder elevation force (15%-30% maximal voluntary contraction) before and after ACP treatment. Results: Significant effects were confirmed after the treatment (ACP and SACP) for Numeric Rating Scale scores (F-1,F-28 = 51.61; P < .0001) and pain area (F-1,F-2 = 32.03; P < .0001). Significant decreases in the EMG amplitude were identified for the nonspecific neck pain group (NPG) (F-1,F-112 = 26.82; P < .0001) and the healthy participant group (HPG) (F-1,F-112 = 21.69; P < .0001) after ACP treatment. No differences were identified between the ACP and SACP treatment protocols for Numeric Rating Scale score (NPG: F-1,F-28 = 0.95; P = .33), pain area (NPG: F-1,F-28 = 1.97; P = .17), or EMG amplitude (NPG: F-1,F-112 = 0.47; P = .49; HPG: F-1,F-112 = 0.75; P = .38). Conclusion: The effect of ACP at acupoints triple energizer 5 and large intestine 11 triple energizer 5, or in close proximity, contributes to pain relief among patients with nonspecific neck pain. The electromyographic analysis indicated a greater resistance to muscle fatigue and decrease of activity of the upper trapezius muscle among healthy participants and patients with nonspecific neck pain. (AU)

FAPESP's process: 13/13839-9 - Assessment of pain, cervical mobility and electromyographic activity of the trapezius muscle in nonspecific neck pain patients pre- and post acupuncture treatment: a cross-over, controlled and randomized blind study
Grantee:Fabiano Politti
Support Opportunities: Regular Research Grants