| Postural Instability and Gait Impairment During Obstacle Crossing in Parkinson's Disease. | |
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MedLine Citation:
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PMID: 22318131 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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Stegemöller EL, Buckley TA, Pitsikoulis C, Barthelemy E, Roemmich R, Hass CJ. Postural instability and gait impairment during obstacle crossing in Parkinson's disease. OBJECTIVE: To examine whether Parkinson's disease (PD) affects gait behavior and stability while walking over an obstacle. DESIGN: Parallel group comparisons were completed in which participants completed 5 trials of normal walking and 5 trials of obstacle crossing while gait kinematics and kinetics were collected. SETTING: University biomechanics laboratory. PARTICIPANTS: Individuals with PD (n=10) and age- and sex-matched healthy older adults (n=10). INTERVENTIONS: Not applicable. MAIN OUTCOME MEASURES: Gait parameters, obstacle clearance parameters, and center of mass motion were calculated during normal walking and obstacle crossing. RESULTS: Results revealed that decrements in gait performance in individuals with PD were amplified during obstacle crossing, suggesting that due to disease-related degradation, individuals with PD chose a more conservative strategy for obstacle crossing. Moreover, an increased duration of single limb support (18% increase), a decrease in anteroposterior range of motion (20% decrease), and an increase in mediolateral range of motion (36% increase, though not significant) coupled with the reduction in the distance between the center of pressure and center of mass (mean of 21% decrease across toe-off and heel strike) and increase in margin of stability (31% increase at toe-off and 71% increase at heel strike) may suggest that deficits in muscle strength and balance may contribute to this impairment. CONCLUSIONS: Persons with PD alter their behavior to reduce the mechanical demands and increase dynamic stability during obstacle avoidance tasks. |
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Authors:
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Elizabeth L Stegemöller; Thomas A Buckley; Chris Pitsikoulis; Ernest Barthelemy; Ryan Roemmich; Chris J Hass |
Publication Detail:
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Type: JOURNAL ARTICLE Date: 2012-2-6 |
Journal Detail:
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Title: Archives of physical medicine and rehabilitation Volume: - ISSN: 1532-821X ISO Abbreviation: - Publication Date: 2012 Feb |
Date Detail:
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Created Date: 2012-2-9 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 2985158R Medline TA: Arch Phys Med Rehabil Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Copyright Information:
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Copyright © 2012 the American Congress of Rehabilitation Medicine. Published by Elsevier Inc. All rights reserved. |
Affiliation:
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Department of Applied Physiology and Kinesiology and Center for Movement Disorders and Neurorestoration, University of Florida, Gainesville, FL. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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