Examination of EMG normalisation methods for the study of the posterior and posterolateral neck muscles in healthy controls

Burnett, Angus, Green, Jonathan, Netto, Kevin and Rodrigues, Julian 2007, Examination of EMG normalisation methods for the study of the posterior and posterolateral neck muscles in healthy controls, Journal of electromyography and kinesiology, vol. 17, no. 5, pp. 635-641.

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Title Examination of EMG normalisation methods for the study of the posterior and posterolateral neck muscles in healthy controls
Author(s) Burnett, Angus
Green, Jonathan
Netto, Kevin
Rodrigues, Julian
Journal name Journal of electromyography and kinesiology
Volume number 17
Issue number 5
Start page 635
End page 641
Publisher Elsevier
Place of publication Amsterdam, The Netherlands
Publication date 2007-10
ISSN 1050-6411
1873-5711
Keyword(s) electromyography
normalisation
intramuscular
reliability
neck
Summary The purpose of this study was to examine the reliability of normalisation methods used in the study of the posterior and posterolateral neck muscles in a group of healthy controls. Six asymptomatic male subjects performed a total of 12 maximum voluntary isometric contractions (MVIC) and 60%-submaximal isometric contractions (60%-MVIC) against the torque arm of an isokinetic dynamometer whilst surface and intramuscular electromyography (EMG) was recorded unilaterally from representative posterior and posterolateral locations. Reliability was calculated using intra-class correlation coefficient (ICC), relative standard error of measurement (%SEM) and relative coefficient of variation (%CV). Maximal torque output was found to be highly reliable in the directions of extension and right lateral bending when the first of three MVIC contractions was excluded. When averaged across contraction direction, high reliability was found for both surface (MVIC: ICC = 0.986, %SEM = 7.5, %CV = 9.2; 60%-MVIC: ICC = 0.975, %SEM = 10, %CV = 13.7) and intramuscular (MVIC: ICC = 0.910, %SEM = 20, %CV = 19.1; 60%-MVIC: ICC = 0.952, %SEM = 16.5, %CV = 13.5) electrodes. Intramuscular electrodes displayed the least reliability in right lateral bending. The use of visual feedback markedly increased the reliability of 60%-MVIC contractions.
Language eng
Field of Research 110601 Biomechanics
Socio Economic Objective 970109 Expanding Knowledge in Engineering
HERDC Research category C1.1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2006, Elsevier Ltd
Persistent URL http://hdl.handle.net/10536/DRO/DU:30020370

Document type: Journal Article
Collection: School of Exercise and Nutrition Sciences
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