Activation of vastus medialis oblique is not delayed in patients with osteoarthritis of the knee compared to asymptomatic participants during open kinetic chain activities

Hdl Handle:
http://hdl.handle.net/10149/58202
Title:
Activation of vastus medialis oblique is not delayed in patients with osteoarthritis of the knee compared to asymptomatic participants during open kinetic chain activities
Authors:
Dixon, J. (John); Howe, T. E. (Tracey)
Affiliation:
University of Teesside. The James Cook University Hospital. Teesside Centre for Rehabilitation Sciences; Glasgow Caledonian University. HealthQWest.
Citation:
Dixon, J. and Howe, T.E. (2007) 'Activation of vastus medialis oblique is not delayed in patients with osteoarthritis of the knee compared to asymptomatic participants during open kinetic chain activities', Manual Therapy, 12 (3), pp.219-225.
Publisher:
Elsevier
Journal:
Manual Therapy
Issue Date:
Aug-2007
URI:
http://hdl.handle.net/10149/58202
DOI:
10.1016/j.math.2006.06.012
Abstract:
This study investigated whether the onset of electromyographic (EMG) activity of vastus medialis oblique (VMO) was delayed relative to that of vastus lateralis (VL) in patients with osteoarthritis (OA) of the knee compared to asymptomatic participants during open kinetic chain activities. An exploratory observational cross sectional study was carried out. Two groups were tested, symptomatic OA knee patients, diagnosed by an orthopaedic surgeon, (n=17), mean (SD) age 66.0 (7.6) years, and asymptomatic participants (n=17), 56.7 (8.6) years. Surface EMG activity of VMO and VL was measured, during concentric contractions extending the knee from 90° flexion, and during maximal voluntary isometric contractions at 60° knee flexion. The EMG onset times of VMO and VL were determined visually and by algorithm. The onset timing difference (OTD) between the two muscles was calculated for each subject, by subtracting the onset time of VL from VMO. Mann–Whitney U-tests revealed that the OTD between VMO and VL was not significantly different between the groups during either contraction type (both p>0.05). The results of this exploratory study may have implications for rehabilitation programmes aimed at developing preferential activation of VMO compared to VL in OA knee patients.
Type:
Article
Keywords:
electromyography; quadriceps; knee; osteoarthritis
ISSN:
1356-689X
Rights:
Author can archive post-print (ie final draft post-refereeing). For full details see http://www.sherpa.ac.uk/romeo/ [Accessed 10/11/09]
Citation Count:
2 [Scopus, 10/11/2009]

Full metadata record

DC FieldValue Language
dc.contributor.authorDixon, J. (John)-
dc.contributor.authorHowe, T. E. (Tracey)-
dc.date.accessioned2009-04-01T10:45:49Z-
dc.date.available2009-04-01T10:45:49Z-
dc.date.issued2007-08-
dc.identifier.citationManual Therapy; 12 (3): 219-225-
dc.identifier.issn1356-689X-
dc.identifier.doi10.1016/j.math.2006.06.012-
dc.identifier.urihttp://hdl.handle.net/10149/58202-
dc.description.abstractThis study investigated whether the onset of electromyographic (EMG) activity of vastus medialis oblique (VMO) was delayed relative to that of vastus lateralis (VL) in patients with osteoarthritis (OA) of the knee compared to asymptomatic participants during open kinetic chain activities. An exploratory observational cross sectional study was carried out. Two groups were tested, symptomatic OA knee patients, diagnosed by an orthopaedic surgeon, (n=17), mean (SD) age 66.0 (7.6) years, and asymptomatic participants (n=17), 56.7 (8.6) years. Surface EMG activity of VMO and VL was measured, during concentric contractions extending the knee from 90° flexion, and during maximal voluntary isometric contractions at 60° knee flexion. The EMG onset times of VMO and VL were determined visually and by algorithm. The onset timing difference (OTD) between the two muscles was calculated for each subject, by subtracting the onset time of VL from VMO. Mann–Whitney U-tests revealed that the OTD between VMO and VL was not significantly different between the groups during either contraction type (both p>0.05). The results of this exploratory study may have implications for rehabilitation programmes aimed at developing preferential activation of VMO compared to VL in OA knee patients.-
dc.publisherElsevier-
dc.rightsAuthor can archive post-print (ie final draft post-refereeing). For full details see http://www.sherpa.ac.uk/romeo/ [Accessed 10/11/09]-
dc.subjectelectromyography-
dc.subjectquadriceps-
dc.subjectknee-
dc.subjectosteoarthritis-
dc.titleActivation of vastus medialis oblique is not delayed in patients with osteoarthritis of the knee compared to asymptomatic participants during open kinetic chain activities-
dc.typeArticle-
dc.contributor.departmentUniversity of Teesside. The James Cook University Hospital. Teesside Centre for Rehabilitation Sciences; Glasgow Caledonian University. HealthQWest.-
dc.identifier.journalManual Therapy-
ref.assessmentRAE 2008-
ref.citationcount2 [Scopus, 10/11/2009]-
or.citation.harvardDixon, J. and Howe, T.E. (2007) 'Activation of vastus medialis oblique is not delayed in patients with osteoarthritis of the knee compared to asymptomatic participants during open kinetic chain activities', Manual Therapy, 12 (3), pp.219-225.-
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