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Rehabilitation Research and Practice
Volume 2018, Article ID 6134529, 6 pages
Research Article

The Effect of a Textured Insole on Symmetry of Turning

Department of Physical Therapy, University of Illinois at Chicago, Chicago, IL, USA

Correspondence should be addressed to Alexander S. Aruin; ude.ciu@niuraa

Received 30 June 2017; Accepted 29 January 2018; Published 20 March 2018

Academic Editor: Eric Kerckhofs

Copyright © 2018 Etem Curuk et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Turning while walking is a common daily activity. Individuals with unilateral impairment frequently perform turns asymmetrically. The purpose of the study was to investigate the effect of a discomfort-inducing textured insole on symmetry of turning. Nine healthy individuals performed turns to the right while walking with no insole, immediately after the insole was inserted in the right shoe, and after walking for six minutes with the insole. The duration of turning, displacements of pelvic markers, and perceived level of discomfort were evaluated. Utilizing the insole was associated with the increased level of perceived discomfort (). Moreover, using the insole was linked to changes in the displacement of two pelvic markers and larger asymmetry index while turning immediately after the insole was inserted in the right shoe as compared to no insole condition (). The duration of right turning increased immediately after the insole was inserted () and after walking with the insole for six minutes. The results indicate that the textured insole creates asymmetry of turning in healthy individuals. The outcome provides a background for future studies focused on using a textured insole to minimize the asymmetry of turning commonly seen in individuals with unilateral impairment.