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Establishing Normative Ranges for the Coefficient of Variability in the Marching-In-Place Test During Sensory Deprivation Using OptoGait System

Megan Allison and Cody Dimak, 22 Jun 2012

There are a number of human senses that are utilized in maintaining a balanced system of gait. The human senses of sight and hearing are used along with sensory motor in order to maintain the symmetry of motion. Unpublished research done at Logan College of Chiropractic have collected normal variance ranges for the coefficient of variability in a young adult population. However, there exist some questions as to what parts the other senses of vision and hearing play on the coefficient of variability (CV) of symmetrical gait. To our knowledge, there are no published studies that utilize a marching-in-place test as a means to objectively measure the cadence of the body with and without human sensory input. Previous work at this institution has demonstrated a normal standard CV of 4.5% exists in asymptomatic population. We believe these are un-quantified components of sensory proprioception. The goal of this research was to use the Marching-in-Place test on the OptoGait software with the OptoGait system to collect data and establish a normative range for the coefficient of variability with different sensory deprivations. The mean, median and mode for CV data from Normal Marching, Eyes Closed Marching, Ears Covered Marching, and Eyes Closed/Ears Covered Marching were calculated. Evaluating only the descriptive data shows an interesting outcome of improved Mean CV with vision obstructed.

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