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Article: Electromyographic activity of the cervical musculature during dynamic lateral bending

TitleElectromyographic activity of the cervical musculature during dynamic lateral bending
Authors
Keywordscervical musculature
dynamic loading
lateral bending
muscle synergies
Issue Date1996
PublisherLippincott, Williams & Wilkins. The Journal's web site is located at http://www.spinejournal.com
Citation
Spine, 1996, v. 21 n. 21, p. 2443-2449 How to Cite?
AbstractStudy Design. Electromyographic profiles from the neck muscles of five young, healthy men were obtained to study the muscular activation patterns during dynamic external loading. Objectives. To examine the myoelectric activity of selected cervical muscles during dynamic loading, and to explore the reaction of the cervical muscles to different loading conditions. Summary of Background Data. The response of cervical muscles throughout dynamic external loading is not well understood. Electromyography provides information, within certain limitations, about the neural drive to various components of the musculature. Such information on activation, combined with geometric parameters of the musculoskeletal tissues, constitutes a tool for helping to understand the mechanism of head and neck impact-related injury. Methods. Subjects were tested with the head and neck in the neutral and prebent positions. Dynamic loads were applied laterally to each subject by free-falling masses to create peak dynamic loads ranging from about 40 to 100 N. Force and electromyographic data were recorded, and cross-correlations from linear envelope electromyography were calculated. Results. The peak electromyogram showed large differences between the two applied loads and between subjects. There were time delays (75-165 msec) between the peak applied force and the peak electromyogram. The muscles on the contralateral side demonstrated different electromyographic profiles between subjects. Within subjects, the electromyographic profiles from each muscle were consistent for the same trial conditions. Conclusions. Electromyographic profiles and the cross-correlation coefficients for cervical muscles have shown reproducible intrasubject muscle synergies, which were not sensitive to the magnitude of applied load and the posture of the head. Intersubject muscle activity patterns varied.
Persistent Identifierhttp://hdl.handle.net/10722/79399
ISSN
2015 Impact Factor: 2.439
2015 SCImago Journal Rankings: 1.459
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorLu, WWen_HK
dc.contributor.authorBishop, PJen_HK
dc.date.accessioned2010-09-06T07:54:15Z-
dc.date.available2010-09-06T07:54:15Z-
dc.date.issued1996en_HK
dc.identifier.citationSpine, 1996, v. 21 n. 21, p. 2443-2449en_HK
dc.identifier.issn0362-2436en_HK
dc.identifier.urihttp://hdl.handle.net/10722/79399-
dc.description.abstractStudy Design. Electromyographic profiles from the neck muscles of five young, healthy men were obtained to study the muscular activation patterns during dynamic external loading. Objectives. To examine the myoelectric activity of selected cervical muscles during dynamic loading, and to explore the reaction of the cervical muscles to different loading conditions. Summary of Background Data. The response of cervical muscles throughout dynamic external loading is not well understood. Electromyography provides information, within certain limitations, about the neural drive to various components of the musculature. Such information on activation, combined with geometric parameters of the musculoskeletal tissues, constitutes a tool for helping to understand the mechanism of head and neck impact-related injury. Methods. Subjects were tested with the head and neck in the neutral and prebent positions. Dynamic loads were applied laterally to each subject by free-falling masses to create peak dynamic loads ranging from about 40 to 100 N. Force and electromyographic data were recorded, and cross-correlations from linear envelope electromyography were calculated. Results. The peak electromyogram showed large differences between the two applied loads and between subjects. There were time delays (75-165 msec) between the peak applied force and the peak electromyogram. The muscles on the contralateral side demonstrated different electromyographic profiles between subjects. Within subjects, the electromyographic profiles from each muscle were consistent for the same trial conditions. Conclusions. Electromyographic profiles and the cross-correlation coefficients for cervical muscles have shown reproducible intrasubject muscle synergies, which were not sensitive to the magnitude of applied load and the posture of the head. Intersubject muscle activity patterns varied.en_HK
dc.languageengen_HK
dc.publisherLippincott, Williams & Wilkins. The Journal's web site is located at http://www.spinejournal.comen_HK
dc.relation.ispartofSpineen_HK
dc.subjectcervical musculatureen_HK
dc.subjectdynamic loadingen_HK
dc.subjectlateral bendingen_HK
dc.subjectmuscle synergiesen_HK
dc.titleElectromyographic activity of the cervical musculature during dynamic lateral bendingen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0887-9869&volume=21&issue=21&spage=2443&epage=2449&date=1996&atitle=Electromyographic+activity+of+the+cervical+musculature+during+dynamic+lateral+bendingen_HK
dc.identifier.emailLu, WW: wwlu@hkusua.hku.hken_HK
dc.identifier.authorityLu, WW=rp00411en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1097/00007632-199611010-00007en_HK
dc.identifier.pmid8923629-
dc.identifier.scopuseid_2-s2.0-0029802732en_HK
dc.identifier.hkuros25225en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0029802732&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume21en_HK
dc.identifier.issue21en_HK
dc.identifier.spage2443en_HK
dc.identifier.epage2449en_HK
dc.identifier.isiWOS:A1996VR73500007-
dc.publisher.placeUnited Statesen_HK

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