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Spinal manipulation alters electromyographic activity of paraspinal muscles: a descriptive study.
J Manipulative Physiol Ther. 2005 Sep; 28(7):465-71.JM

Abstract

OBJECTIVE

To examine the effect of spinal manipulation on electromyographic (EMG) activity in areas of localized tight muscle bundles of the low back.

METHODS

Surface EMG activity was collected from 16 participants in 2 chiropractic offices during the 5 to 10 minutes of the treatment protocol. Electrodes were placed over the 2 sites of greatest paraspinal muscle tension as determined by manual palpation. Spinal manipulation was administered to 8 participants using Activator protocol; the other 8 were treated using Diversified protocol.

RESULTS

Electromyographic activity decreased by at least 25% after treatment in 24 of the 31 sites that were monitored. There was less than 25% change at 3 sites and more than 25% increase at 4 sites. Multiple distinct increases and decreases were observed in many data plots.

CONCLUSION

The results of this study indicate that manipulation induces a virtually immediate change, usually a reduction, in resting EMG levels in at least some patients with low back pain and tight paraspinal muscle bundles. In some cases, EMG activity increased during the treatment protocol and then usually, but not always, decreased to a level lower than the pretreatment level.

Authors+Show Affiliations

Palmer Center for Chiropractic Research, Davenport, Iowa 52803, USA. devocht_j@palmer.edusNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

16182019

Citation

DeVocht, James W., et al. "Spinal Manipulation Alters Electromyographic Activity of Paraspinal Muscles: a Descriptive Study." Journal of Manipulative and Physiological Therapeutics, vol. 28, no. 7, 2005, pp. 465-71.
DeVocht JW, Pickar JG, Wilder DG. Spinal manipulation alters electromyographic activity of paraspinal muscles: a descriptive study. J Manipulative Physiol Ther. 2005;28(7):465-71.
DeVocht, J. W., Pickar, J. G., & Wilder, D. G. (2005). Spinal manipulation alters electromyographic activity of paraspinal muscles: a descriptive study. Journal of Manipulative and Physiological Therapeutics, 28(7), 465-71.
DeVocht JW, Pickar JG, Wilder DG. Spinal Manipulation Alters Electromyographic Activity of Paraspinal Muscles: a Descriptive Study. J Manipulative Physiol Ther. 2005;28(7):465-71. PubMed PMID: 16182019.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Spinal manipulation alters electromyographic activity of paraspinal muscles: a descriptive study. AU - DeVocht,James W, AU - Pickar,Joel G, AU - Wilder,David G, PY - 2003/11/14/received PY - 2004/01/08/revised PY - 2004/04/08/accepted PY - 2005/9/27/pubmed PY - 2006/8/10/medline PY - 2005/9/27/entrez SP - 465 EP - 71 JF - Journal of manipulative and physiological therapeutics JO - J Manipulative Physiol Ther VL - 28 IS - 7 N2 - OBJECTIVE: To examine the effect of spinal manipulation on electromyographic (EMG) activity in areas of localized tight muscle bundles of the low back. METHODS: Surface EMG activity was collected from 16 participants in 2 chiropractic offices during the 5 to 10 minutes of the treatment protocol. Electrodes were placed over the 2 sites of greatest paraspinal muscle tension as determined by manual palpation. Spinal manipulation was administered to 8 participants using Activator protocol; the other 8 were treated using Diversified protocol. RESULTS: Electromyographic activity decreased by at least 25% after treatment in 24 of the 31 sites that were monitored. There was less than 25% change at 3 sites and more than 25% increase at 4 sites. Multiple distinct increases and decreases were observed in many data plots. CONCLUSION: The results of this study indicate that manipulation induces a virtually immediate change, usually a reduction, in resting EMG levels in at least some patients with low back pain and tight paraspinal muscle bundles. In some cases, EMG activity increased during the treatment protocol and then usually, but not always, decreased to a level lower than the pretreatment level. SN - 1532-6586 UR - https://www.unboundmedicine.com/medline/citation/16182019/Spinal_manipulation_alters_electromyographic_activity_of_paraspinal_muscles:_a_descriptive_study_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0161-4754(05)00180-6 DB - PRIME DP - Unbound Medicine ER -