Linked Life Data

20006505

Source:http://linkedlifedata.com/resource/pubmed/id/20006505

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
2010-2-22
pubmed:abstractText
Post-stroke hemiparetic walking is typically asymmetric. Assessment of symmetry is often performed at either self-selected or fastest-comfortable walking speeds to gain insight into coordination deficits and compensatory mechanisms. However, how walking speed influences the level of asymmetry is unclear. This study analyzed relative changes in paretic and non-paretic leg symmetry to assess whether one speed is more effective at highlighting asymmetries in hemiparetic walking and whether there is a systematic effect of speed on asymmetry. Forty-six subjects with chronic hemiparesis walked at their self-selected and fastest-comfortable speeds on an instrumented split-belt treadmill. Relative proportions (paretic leg value/(paretic+non-paretic leg value)) were computed at each speed for step length (PSR), propulsion (PP), and joint moment impulses at the ankle and hip. Thirty-six subjects did not change their step length symmetry with speed, while three subjects changed their step length values toward increased asymmetry and seven changed toward increased symmetry. Propulsion symmetry did not change uniformly with speed for the group, with 15 subjects changing their propulsion values toward increased asymmetry while increasing speed from their self-selected to fastest-comfortable and 11 decreasing the asymmetry. Both step length and propulsion symmetry were correlated with ankle impulse proportion at self-selected and fastest-comfortable speed (cf., hip impulse proportion), but ratios (self-selected value/fastest-comfortable value) of the proportion measures (PSR and PP) showed that neither step length nor propulsion symmetry correlated with the ankle impulse proportions. Thus, the individual kinetic mechanisms used to increase speed could not be predicted from PSR or PP.
pubmed:grant
pubmed:commentsCorrections
http://linkedlifedata.com/resource/pubmed/commentcorrection/20006505-10088586, http://linkedlifedata.com/resource/pubmed/commentcorrection/20006505-10499938, http://linkedlifedata.com/resource/pubmed/commentcorrection/20006505-15472095, http://linkedlifedata.com/resource/pubmed/commentcorrection/20006505-15996592, http://linkedlifedata.com/resource/pubmed/commentcorrection/20006505-16456121, http://linkedlifedata.com/resource/pubmed/commentcorrection/20006505-16500169, http://linkedlifedata.com/resource/pubmed/commentcorrection/20006505-16516495, http://linkedlifedata.com/resource/pubmed/commentcorrection/20006505-17207674, http://linkedlifedata.com/resource/pubmed/commentcorrection/20006505-18789692, http://linkedlifedata.com/resource/pubmed/commentcorrection/20006505-19211250, http://linkedlifedata.com/resource/pubmed/commentcorrection/20006505-7762050, http://linkedlifedata.com/resource/pubmed/commentcorrection/20006505-8602480
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
Mar
pubmed:issn
1879-2219
pubmed:author
pubmed:copyrightInfo
Copyright 2009 Elsevier B.V. All rights reserved.
pubmed:issnType
Electronic
pubmed:volume
31
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
311-6
pubmed:dateRevised
2011-9-26
pubmed:meshHeading
pubmed:year
2010
pubmed:articleTitle
Differences in self-selected and fastest-comfortable walking in post-stroke hemiparetic persons.
pubmed:affiliation
Department of Mechanical Engineering, The University of Texas, Austin, TX 78712, USA.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, Non-P.H.S., Research Support, N.I.H., Extramural