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Article: Effect of electrocardiographic contamination on surface electromyography assessment of back muscles

TitleEffect of electrocardiographic contamination on surface electromyography assessment of back muscles
Authors
KeywordsBack muscles
ECG artifacts
Low back pain
Surface EMG
Issue Date2009
PublisherElsevier Ltd. The Journal's web site is located at http://www.elsevier.com/locate/jelekin
Citation
Journal Of Electromyography And Kinesiology, 2009, v. 19 n. 1, p. 145-156 How to Cite?
AbstractThe purpose of this study was to demonstrate the relative effect of electrocardiography (ECG) on back muscle surface electromyography (SEMG) parameters and their corresponding sensitivity in low back pain (LBP) assessment. Back muscle SEMG activities were recorded from 17 healthy subjects and 18 chronic LBP patients under static postures (straight sitting and upright standing), and dynamic action (flexion-extension). ECG cancellation based on independent component analysis (ICA) method was performed. Root mean square (RMS) and median frequency (MF) of raw and denoised SEMG data were computed respectively. Multiple comparisons were then performed. A consistent trend of change (increased MF and decreased RMS) followed ECG removal was noticed. In particular, in SEMG measurements under static postures, a significant decrease in RMS (p < 0.05) and increase in MF (p < 0.05) were found in all recording muscle groups. Level of corruption by ECG artifacts on SEMG measurements was found to be more serious and prominent in static postures than that in dynamic action. After ECG removal, significant improvements in the ability of SEMG to discriminate LBP patients from healthy subjects were seen in RMS amplitude recorded while standing (p < 0.05) and MF in all measuring conditions (p < 0.05). This study provides a more complete understanding on the relative effect of ECG contamination on back muscles SEMG parameters and LBP assessment. © 2007 Elsevier Ltd. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/59471
ISSN
2015 Impact Factor: 1.53
2015 SCImago Journal Rankings: 0.886
ISI Accession Number ID
Funding AgencyGrant Number
Occupational Safety and Health Council Research Committee2000/04
SK Yee Medical Foundation203210
Funding Information:

This study is supported by Hong Kong Research Grant or Occupational Safety and Health Council Research Committee (2000/04) and SK Yee Medical Foundation Grant (203210).

References
Grants

 

DC FieldValueLanguage
dc.contributor.authorHu, Yen_HK
dc.contributor.authorMak, JNFen_HK
dc.contributor.authorLuk, KDKen_HK
dc.date.accessioned2010-05-31T03:50:53Z-
dc.date.available2010-05-31T03:50:53Z-
dc.date.issued2009en_HK
dc.identifier.citationJournal Of Electromyography And Kinesiology, 2009, v. 19 n. 1, p. 145-156en_HK
dc.identifier.issn1050-6411en_HK
dc.identifier.urihttp://hdl.handle.net/10722/59471-
dc.description.abstractThe purpose of this study was to demonstrate the relative effect of electrocardiography (ECG) on back muscle surface electromyography (SEMG) parameters and their corresponding sensitivity in low back pain (LBP) assessment. Back muscle SEMG activities were recorded from 17 healthy subjects and 18 chronic LBP patients under static postures (straight sitting and upright standing), and dynamic action (flexion-extension). ECG cancellation based on independent component analysis (ICA) method was performed. Root mean square (RMS) and median frequency (MF) of raw and denoised SEMG data were computed respectively. Multiple comparisons were then performed. A consistent trend of change (increased MF and decreased RMS) followed ECG removal was noticed. In particular, in SEMG measurements under static postures, a significant decrease in RMS (p < 0.05) and increase in MF (p < 0.05) were found in all recording muscle groups. Level of corruption by ECG artifacts on SEMG measurements was found to be more serious and prominent in static postures than that in dynamic action. After ECG removal, significant improvements in the ability of SEMG to discriminate LBP patients from healthy subjects were seen in RMS amplitude recorded while standing (p < 0.05) and MF in all measuring conditions (p < 0.05). This study provides a more complete understanding on the relative effect of ECG contamination on back muscles SEMG parameters and LBP assessment. © 2007 Elsevier Ltd. All rights reserved.en_HK
dc.languageengen_HK
dc.publisherElsevier Ltd. The Journal's web site is located at http://www.elsevier.com/locate/jelekinen_HK
dc.relation.ispartofJournal of Electromyography and Kinesiologyen_HK
dc.subjectBack musclesen_HK
dc.subjectECG artifactsen_HK
dc.subjectLow back painen_HK
dc.subjectSurface EMGen_HK
dc.titleEffect of electrocardiographic contamination on surface electromyography assessment of back musclesen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1&volume=19&spage=145&epage=56. &date=2009&atitle=Effect+of+electrocardiographic+contamination+on+surface+electromyography+assessment+of+back+muscles.en_HK
dc.identifier.emailHu, Y:yhud@hku.hken_HK
dc.identifier.emailLuk, KDK:hcm21000@hku.hken_HK
dc.identifier.authorityHu, Y=rp00432en_HK
dc.identifier.authorityLuk, KDK=rp00333en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.jelekin.2007.07.001en_HK
dc.identifier.pmid17716916-
dc.identifier.scopuseid_2-s2.0-55749092103en_HK
dc.identifier.hkuros159709en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-55749092103&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume19en_HK
dc.identifier.issue1en_HK
dc.identifier.spage145en_HK
dc.identifier.epage156en_HK
dc.identifier.isiWOS:000263808000017-
dc.publisher.placeUnited Kingdomen_HK
dc.relation.projectProvision of individualized biomechanical and electrophysiological service for occupational low back disorder patients-
dc.identifier.scopusauthoridHu, Y=7407116091en_HK
dc.identifier.scopusauthoridMak, JNF=35980187600en_HK
dc.identifier.scopusauthoridLuk, KDK=7201921573en_HK

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