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An examination of constraints affecting the intralimb coordination of hemiparetic gait

An examination of constraints affecting the intralimb coordination of hemiparetic gait
An examination of constraints affecting the intralimb coordination of hemiparetic gait
A dynamical systems approach to the study of locomotor intralimb coordination in those with hemiparesis led to an examination of the utility of the shank–thigh relative phase (RP) as a collective variable and the identification of potential constraints that may shape this coordination. Eighteen non-disabled individuals formed three groups matched to the age and gender of six participants with chronic right hemiparesis. The three groups differed in the constraints imposed on their walking: (1) walking at their preferred walking speed; (2) walking as slowly as those with hemiparesis; and, (3) walking slowly with a right ankle–foot orthosis (AFO). The results revealed an asymmetry in intralimb coordination between the unaffected and affected leg of those with hemiparesis localized to the latter third of the gait cycle when the limb is advanced from the end of stance to the reestablishment of a new stance. Walking slowly with or without an AFO resulted in no measureable effect in the non-disabled, but accounts for 22% of the variance in the intralimb coordination of the hemiplegic’s affected limb and 16% in the unaffected limb. The AFO offered little additional contribution. These results derive from shank–thigh RP that is shown to provide more information about intralimb coordination than knee angle displacement. Implications for these results and the use of RP for rehabilitation are discussed
0167-9457
251-273
Barela, José A.
cc7227e7-6a48-4ee0-8d50-60dfb5fb0d24
Whitall, Jill
9761aefb-be80-4270-bc1f-0e726399376e
Black, Pam
af70e3a2-3698-49e9-b7b4-73843cf1b6d0
Clark, Jane E.
d5c0297c-431e-4880-b61c-b87d7611f3cb
Barela, José A.
cc7227e7-6a48-4ee0-8d50-60dfb5fb0d24
Whitall, Jill
9761aefb-be80-4270-bc1f-0e726399376e
Black, Pam
af70e3a2-3698-49e9-b7b4-73843cf1b6d0
Clark, Jane E.
d5c0297c-431e-4880-b61c-b87d7611f3cb

Barela, José A., Whitall, Jill, Black, Pam and Clark, Jane E. (2000) An examination of constraints affecting the intralimb coordination of hemiparetic gait. Human Movement Science, 19 (2), 251-273. (doi:10.1016/S0167-9457(00)00014-2).

Record type: Article

Abstract

A dynamical systems approach to the study of locomotor intralimb coordination in those with hemiparesis led to an examination of the utility of the shank–thigh relative phase (RP) as a collective variable and the identification of potential constraints that may shape this coordination. Eighteen non-disabled individuals formed three groups matched to the age and gender of six participants with chronic right hemiparesis. The three groups differed in the constraints imposed on their walking: (1) walking at their preferred walking speed; (2) walking as slowly as those with hemiparesis; and, (3) walking slowly with a right ankle–foot orthosis (AFO). The results revealed an asymmetry in intralimb coordination between the unaffected and affected leg of those with hemiparesis localized to the latter third of the gait cycle when the limb is advanced from the end of stance to the reestablishment of a new stance. Walking slowly with or without an AFO resulted in no measureable effect in the non-disabled, but accounts for 22% of the variance in the intralimb coordination of the hemiplegic’s affected limb and 16% in the unaffected limb. The AFO offered little additional contribution. These results derive from shank–thigh RP that is shown to provide more information about intralimb coordination than knee angle displacement. Implications for these results and the use of RP for rehabilitation are discussed

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Published date: July 2000
Organisations: Faculty of Health Sciences

Identifiers

Local EPrints ID: 361310
URI: https://eprints.soton.ac.uk/id/eprint/361310
ISSN: 0167-9457
PURE UUID: d216d4ba-1096-4174-98e9-bcdc5453b240

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Date deposited: 17 Jan 2014 10:21
Last modified: 18 Jul 2017 03:04

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