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Effect on discomfort of frequency of wrist exertions combined with wrist articulations and forearm rotation

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dc.contributor.author Khan, Abid Ali
dc.contributor.author O'Sullivan, Leonard
dc.contributor.author Gallwey, Timothy J.
dc.date.accessioned 2017-04-11T14:40:52Z
dc.date.available 2017-04-11T14:40:52Z
dc.date.issued 2010
dc.identifier.issn 0169-8141
dc.identifier.uri http://hdl.handle.net/10344/5691
dc.description peer-reviewed en_US
dc.description.abstract This study investigated the combined effects of forearm rotation, radial/ulnar deviation and flexion/extension on discomfort score for two levels of frequency (10 exertions/min and 20 exertions/min) in a repetitive wrist flexion task with a force of 10 N. There were three levels of wrist deviation (neutral, 35%ROM in radial and ulnar), three levels of wrist flexion/extension (neutral, 35%ROM in flexion and extension) and three levels of forearm rotation (neutral, 60%ROM in prone and supine). The dependent variable was discomfort on a Visual Analogue Scale. ANOVA results showed that there were highly significant effects of all the main factors (p < 0.001) on discomfort. The two-way interaction of forearm rotation with radial/ulnar wrist deviation was highly significant (p = 0.001) as was forearm rotation by participant. Similarly, three of the three-way interactions and one four-way interaction were highly significant (p < 0.001 and p < 0.01), probably due to having participants as one of the factors in them. Posture changes from neutral to 35%ROM increased discomfort by about 20%, but combinations of deviated postures increased discomfort by up to 70%. The higher frequency increased discomfort by 28%. Some of the increase in discomfort appears to have been due to reductions in wrist flexion MVC at non-neutral postures. en_US
dc.language.iso eng en_US
dc.publisher Elsevier en_US
dc.relation.ispartofseries International Journal of Industrial Ergonomics;40 (5), pp 492-503
dc.relation.uri http://doi.org/10.1016/j.ergon.2010.05.003
dc.rights This is the author’s version of a work that was accepted for publication in International Journal of Industrial Ergonomics. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Interational Journal of Industrial Ergonomics, 2010, 40 (5), pp. 492-503, http://doi.org/10.1016/j.ergon.2010.05.003 en_US
dc.subject wrist and forearm postures en_US
dc.subject musculoskeletal disorders en_US
dc.subject discomfort en_US
dc.title Effect on discomfort of frequency of wrist exertions combined with wrist articulations and forearm rotation en_US
dc.type info:eu-repo/semantics/article en_US
dc.type.supercollection all_ul_research en_US
dc.type.supercollection ul_published_reviewed en_US
dc.date.updated 2017-04-11T11:58:29Z
dc.description.version ACCEPTED
dc.identifier.doi 10.1016/j.ergon.2010.05.003
dc.relation.projectid MIRTH-CT-2001-00574 en_US
dc.rights.accessrights info:eu-repo/semantics/openAccess en_US
dc.internal.rssid 1135209
dc.internal.copyrightchecked Yes
dc.contributor.funder European Union
dc.identifier.journaltitle International Journal of Industrial Ergonomics
dc.description.status peer-reviewed


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