Methodology to Describe the Regulation of Sensory Feedback Mechanisms

Jeanmarie R. Burke, Ph.D., New York Chiropractic College


Neuromuscular concepts underlying the benefits of orthotics suggest that improvements in sensorimotor integration may contribute to the reduction in muscle activity and the resultant increase in comfort perception. Sensorimotor inte­gration refers to the modulation of motor outputs via modi­fying sensory feedback signals. Modifications to H-reflex amplitudes that occur as a function of changes in motor task demands, postural orientations, and background muscle activity are considered functional indices of sensorimotor integration. It is hypothesized that sensory feedback mecha­nisms are impaired in patients with chronic low back pain. Clinical efficacy of orthotic interventions in patients with chronic low back pain may involve improvements to the regulation of sensory feedback mechanisms.


The purpose of this research is to determine the effects of Foot Leveler's orthotics on the recruitment profiles of the tibial nerve H-reflex response in chronic low back patients during quiet standing as compared to lying prone on a table.



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