Mechanisms to increase propulsive force for individuals poststroke

Author(s)Hsiao, HaoYuan
Author(s)Knarr, Brian A.
Author(s)Higginson, Jill S.
Author(s)Binder-Macleod, Stuart A.
Ordered AuthorHaoYuan Hsiao, Brian A Knarr, Jill S Higginson3 and Stuart A Binder-Macleod4
UD AuthorHsiao, HaoYuanen_US
UD AuthorHigginson, Jill S.en_US
UD AuthorBinder-Macleod, Stuart A.en_US
Date Accessioned2016-01-15T17:02:03Z
Date Available2016-01-15T17:02:03Z
Copyright DateCopyright © 2015 Hsiao et al.en_US
Publication Date2015-04-18
DescriptionPublisher's PDFen_US
AbstractBACKGROUND: Propulsive force generation is critical to walking speed. Trialing limb angle and ankle moment are major contributors to increases in propulsive force during gait. For able-bodied individuals, trailing limb angle contributes twice as much as ankle moment to increases in propulsive force during speed modulation. The aim of this study was to quantify the relative contribution of ankle moment and trailing limb angle to increases in propulsive force for individuals poststroke. METHODS: A biomechanical-based model previously developed for able-bodied individuals was evaluated and enhanced for individuals poststroke. Gait analysis was performed as subjects (N = 24) with chronic poststroke hemiparesis walked at their self-selected and fast walking speeds on a treadmill. RESULTS: Both trailing limb angle and ankle moment increased during speed modulation. In the paretic limb, the contribution from trailing limb angle versus ankle moment to increases in propulsive force is 74% and 17%. In the non-paretic limb, the contribution from trailing limb angle versus ankle moment to increases in propulsive force is 67% and 22%. CONCLUSIONS: Individuals poststroke increase propulsive force mainly by changing trailing limb angle in both the paretic and non-paretic limbs. This strategy may contribute to the inefficiency in poststroke walking patterns. Future work is needed to examine whether these characteristics can be modified via intervention.en_US
DepartmentUniversity of Delaware. Biomechanics and Movement Science Program.en_US
DepartmentUniversity of Delaware. Department of Mechanical Engineering.en_US
DepartmentUniversity of Delaware. Department of Physical Therapy.en_US
CitationHsiao, HaoYuan, et al. "Mechanisms to increase propulsive force for individuals poststroke." Journal of neuroengineering and rehabilitation 12.1 (2015): 40.en_US
DOI10.1186/s12984-015-0030-8en_US
ISSN1743-0003en_US
URLhttp://udspace.udel.edu/handle/19716/17392
Languageen_USen_US
PublisherBioMed Central Ltd.en_US
dc.rightsCreative Commons Attribution License (http://creativecommons.org/licenses/by/4.0)en_US
dc.sourceJournal of Neuroengineering and Rehabilitationen_US
dc.source.urihttp://jneuroengrehab.biomedcentral.com/abouten_US
TitleMechanisms to increase propulsive force for individuals poststrokeen_US
TypeArticleen_US
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