Reliability of normalisation methods for EMG analysis of neck muscles
Data(s) |
01/01/2006
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Resumo |
Acceptable reliability of normalisation contractions in electromyography (EMG) is paramount for testing conducted over a number of days or if normal laboratory strength testing equipment is unavailable. This study examined the reliability of maximal voluntary isometric contractions (MVIC) and sub-maximal (60%) isometric contractions for use in neck muscle EMG studies. Surface EMG was recorded bilaterally from eight sites around the neck at C4/5 level from five healthy male subjects. Subjects performed MVIC and sub-maximal normalisation contractions using an isokinetic dynamometer (ID) and a portable cable dynamometer with attached strain gauge (PCD) in addition to a MVIC against a manual resistance (MR). Subjects were tested in flexion, extension, left and right lateral bending and were retested by the same tester within a two-week period. Intra class correlation co-efficients (ICC) were calculated for each testing method and contraction direction and a mean ICC was calculated across all contraction directions. All normalisation methods produced excellent within-day reliability (mean ICC >0.80) but only the MVICs using the ID and PCD had acceptable reliability when assessed between-days. This study confirmed the validity of using MVICs elicited using the ID and PCD as reliable reference contractions for the normalisation of neck EMG.<br /> |
Identificador | |
Idioma(s) |
eng |
Publicador |
I O S Press |
Relação |
http://dro.deakin.edu.au/eserv/DU:30020416/netto-reliabilityofnormalisation-2006.pdf http://search.ebscohost.com/login.aspx?direct=true |
Direitos |
2006, IOS Press and the authors |
Palavras-Chave | #electromyography #neck #cervical #reliability #normalisation |
Tipo |
Journal Article |