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dc.contributor.authorEdmondston, Stephen
dc.contributor.authorSharp, M.
dc.contributor.authorSymes, A.
dc.contributor.authorAlhabib, N.
dc.contributor.authorAllison, Garry
dc.date.accessioned2017-01-30T13:20:59Z
dc.date.available2017-01-30T13:20:59Z
dc.date.created2012-03-27T20:01:11Z
dc.date.issued2011
dc.identifier.citationEdmondston, Stephen J. and Sharp, Michael and Symes, Andrew and Alhabib, Nawaf and Allison, Garry T. 2011. Changes in mechanical load and extensor muscle activity in the cervico-thoracic spine induced by sitting posture modification. Ergonomics. 54 (2): pp. 179-186.
dc.identifier.urihttp://hdl.handle.net/20.500.11937/30690
dc.identifier.doi10.1080/00140139.2010.544765
dc.description.abstract

The influence of whole body sitting posture on cervico-thoracic posture, mechanical load and extensor muscle activity was examined in 23 asymptomatic adults. Cervical and upper thoracic extensor muscle activity measured in guided slouched and lumbo-pelvic neutral postures was normalised to that measured in a self-selected habitual posture. Head and neck posture and gravitational load moment measurements were obtained in each posture. Sagittal head translation, upper cervical extension and load moment were significantly greater in the slouched posture (p < 0.001). Contrasting patterns of cervical and thoracic extensor activity were observed in the slouched and neutral postures, with cervical extensor activity 40% higher in the slouched posture (p < 0.0001). Thoracic extensor activity was significantly higher in the lumbo-pelvic neutral posture than the habitual posture (p = 0.002). The significant changes in extensor muscle activity with postural modification appear to be induced by the associated change in mechanical load moment of the head.

dc.publisherTaylor & Francis Ltd.
dc.titleChanges in mechanical load and extensor muscle activity in the cervico-thoracic spine induced by sitting posture modification
dc.typeJournal Article
dcterms.source.volume54
dcterms.source.number2
dcterms.source.startPage179
dcterms.source.endPage186
dcterms.source.issn00140139
dcterms.source.titleErgonomics
curtin.departmentSchool of Physiotherapy
curtin.accessStatusFulltext not available


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