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J Electromyogr Kinesiol. 2012 Oct;22(5):785-94. doi: 10.1016/j.jelekin.2012.01.015. Epub 2012 Feb 19.

Spinal manipulative therapy and somatosensory activation.

Author information

1
Palmer Center for Chiropractic Research, Palmer College of Chiropractic, Davenport, IA, USA. pickar_j@palmer.edu

Abstract

Manually-applied movement and mobilization of body parts as a healing activity has been used for centuries. A relatively high velocity, low amplitude force applied to the vertebral column with therapeutic intent, referred to as spinal manipulative therapy (SMT), is one such activity. It is most commonly used by chiropractors, but other healthcare practitioners including osteopaths and physiotherapists also perform SMT. The mechanisms responsible for the therapeutic effects of SMT remain unclear. Early theories proposed that the nervous system mediates the effects of SMT. The goal of this article is to briefly update our knowledge regarding several physical characteristics of an applied SMT, and review what is known about the signaling characteristics of sensory neurons innervating the vertebral column in response to spinal manipulation. Based upon the experimental literature, we propose that SMT may produce a sustained change in the synaptic efficacy of central neurons by evoking a high frequency, bursting discharge from several types of dynamically-sensitive, mechanosensitive paraspinal primary afferent neurons.

PMID:
22349622
PMCID:
PMC3399029
DOI:
10.1016/j.jelekin.2012.01.015
[Indexed for MEDLINE]
Free PMC Article
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