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The Relationships among Gait Asymmetry, the Gait Velocity and Motor Function of Lower Extremity in Stroke Patients  

Nam, Hyoung-Chun (Department of Physical Therapy, Kyungbuk College)
Kim, Seong-Yeol (Department of Physical Therapy, Kyungnam University)
An, Seung-Heon (Department of Physical Therapy, National Rehabilitation Center)
Publication Information
Journal of the Korean Society of Physical Medicine / v.5, no.3, 2010 , pp. 385-394 More about this Journal
Abstract
Purpose : The present study was to examine the difference and severity of asymmetry in independently ambulating stroke survivors and to establish the association between gait asymmetry, velocity, and the motor function of lower extremity. Methods : The subjects used in this study were 43 subjects with hemiparesis being able to walk independently. Motor function of lower extremity was measured clinically with the Fugl Meyer-Lower /Extremity Assessment. Overground gait velocity and spatia-temporal parameters were collected by the GAITRite system. Results : Thirty(69.77%) patients showed statistically significant temporal asymmetry while 28(65.1%) exhibited statistically significant spatial asymmetry. One-way ANOVA results showed a main effect of temporal asymmetry group(normative, mild, severe) for gait velocity(F=74.129), FM-L/E(F=17.270), swing-stance symmetry(F=66.869, F=13.485, respectively), spatio-temporal asymmetry(F=13.166, F=31.800, respectively) 66, F=31.800, respectively). Gait velocity was negatively associated with temporal asymmetry(r=-.83), spatial asymmetry(r=-.60). Motor function of lower extremity was also associated with temporal asymmetry(r=-.58), and spatial asymmetry(r=-.50). Conclusion : The study attempted to establish the standard assessment of hemiparesis gait symmetry in light of the complex relationship with motor impairment and gait velocity. More future work will need to link the degree of gait asymmetry to clinically relevant outcomes to better establish the clinical significance of such observations.
Keywords
Asymmetry; Function of lower extremity; Gait velocity; Spatio-temporal parameter; Stroke;
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