Gorrell, Lindsay M.Conway, Philip J. W.Herzog, Walter2020-01-072020-01-072019-10-01Gorrell, L. M., Conway, P. J., & Herzog, W. (2019). Reflex Responses of Neck, Back, and Limb Muscles to High-Velocity, Low-Amplitude Manual Cervical and Upper Thoracic Spinal Manipulation of Asymptomatic Individuals—A Descriptive Study. "Journal of Manipulative and Physiological Therapeutics," 42(8), 572–581. doi: 10.1016/j.jmpt.2018.11.025http://hdl.handle.net/1880/111444https://dx.doi.org/10.11575/PRISM/37417Objective: The purpose of this research was to determine the extent of reflex responses after spinal manipulative therapy (SMT) of the cervical and upper thoracic spine. Methods: Eleven asymptomatic participants received 6 commonly used SMTs to the cervical and upper thoracic spine. Bipolar surface electromyography electrodes were used to measure reflex responses of 16 neck, back, and proximal limb muscles bilaterally. The percentage of occurrence and the extent of reflex responses of these muscles were determined. Results: Reflex responses after cervical SMT were typically present in all neck and most back muscles, whereas responses in the outlets to the arm and leg were less frequent. This trend was similar, although decreased in magnitude, after thoracic SMT. Conclusion: Reflex responses were greatest after upper cervical SMT and lowest with thoracic SMT.engUnless otherwise indicated, this material is protected by copyright and has been made available with authorization from the copyright owner. You may use this material in any way that is permitted by the Copyright Act or through licensing that has been assigned to the document. For uses that are not allowable under copyright legislation or licensing, you are required to seek permission.ManipulationChiropracticElectromyographyjournal article10.1016/j.jmpt.2018.11.025