Immediate and Carryover Changes of C5-6 Joint Mobilization on Shoulder External Rotator Muscle Strength |
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| Authors: | Sharon S Wang Jim Meadows |
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| Institution: | 1. Associate Professor, Texas Woman''s University, School of Physical Therapy-Dallas, Dallas, Tex;2. Senior Faculty and Examiner and Director of Academics, North American Institute of Orthopedic Manual Therapy, Eugene, Ore;1. Department of Chemistry, Faculty of Science, Cairo University, Gamma Street, Giza, Cairo 12613, Egypt;2. Institut für Anorganische Chemie, Julius-Maximilians-Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany;1. Medical Parasitology Department, Faculty of Medicine, Tanta University, Egypt;2. Histology Department, Faculty of Medicine, Tanta University, Egypt;1. Department of Pathology, University Medical Center Utrecht, The Netherlands;2. Department of Pathology, Erasmus University Medical Center Rotterdam, The Netherlands;3. Department of Otorhinolaryngology-Head and Neck Surgery, University Medical Center Utrecht, The Netherlands;4. Department of Head and Neck Surgical Oncology, UMC Utrecht Cancer Center, University Medical Center Utrecht, The Netherlands;5. PALGA Foundation, Houten, The Netherlands;1. Genome and Stem Cell Centre, Erciyes University, Kayseri 38039, Turkey;2. Department of Animal Science, Faculty of Agriculture, Erciyes University, Kayseri 38039, Turkey;3. Department of Genetics, Faculty of Veterinary Medicine, Erciyes University, Kayseri 38039, Turkey;4. Department of Reproduction and Artificial Insemination, Faculty of Veterinary Medicine, Erciyes University, Kayseri 38039, Turkey |
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| Abstract: | ObjectiveClinical evidence has shown that extremity dysfunction, such as muscle weakness or inhibition, is associated with spinal disorders. Spinal manual therapy is a common therapeutic approach used to address extremity muscle weakness. The purpose of the study was to assess changes in the maximal muscle strength of the shoulder external rotators immediately and at 10, 20, and 30 minutes after cervical joint mobilization at the C5-6 segment.MethodsEighteen participants with existing or a history of neck pain were screened by 2 investigators independently for muscle weakness of shoulder external rotators. Fifteen qualified participants underwent shoulder external rotator strength testing with a handheld dynamometer. Each participant was tested 6 times, twice before, immediately after, and at 10, 20, and 30 minutes after a C5-6 joint mobilization on the involved side. The 2 strength data collected before the mobilization were used to determine intratester reliability.ResultsThe intratester reliability of the shoulder external rotator strength was excellent (intraclass correlation coefficient3,2 = 0.985). One-way analysis of variance with repeated measures showed a statistical significance in strength data (P = .002). Post hoc tests revealed a significant increase between prejoint mobilization and immediately postjoint mobilization (P = .003) and between pre joint mobilization and 10-minute post joint mobilization (P < .001).ConclusionsThe results of the study suggest that C5-6 joint mobilization increases muscle strength of the shoulder external rotators immediately and its effect carries over for 10 minutes but not after 20 minutes. |
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