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Effects of upper arm articulations on shoulder-arm discomfort profile in a pronation task

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dc.contributor.author Mukhopadhyay, Prabir
dc.contributor.author O'Sullivan, Leonard
dc.contributor.author Gallwey, Timothy J.
dc.date.accessioned 2017-04-11T15:26:25Z
dc.date.available 2017-04-11T15:26:25Z
dc.date.issued 2007
dc.identifier.issn 13599364
dc.identifier.uri http://hdl.handle.net/10344/5693
dc.description peer-reviewed en_US
dc.description.abstract Twenty right-handed male university students performed a full factorial experiment, consisting of three forearm rotation angles (60% prone and supine, and neutral), two elbow angles (45°and 90°), three humeral rotation angles (45°, 90° and 135°), and two upper arm angles (45° flexion and neutral). The task was a one-second pronation torque of 20% Maximum Voluntary Contraction (MVC) relative to MVC at the standard position of the arm, 15 times per minute for 5 minutes, at each postural combination. Discomfort rating after the end of each five minute exertion was recorded on a visual analogue scale. A repeated measures ANCOVA on discomfort score indicated that endurance time was a significant covariate. Other significant factors were upper arm flexion angle, forearm rotation angle, and the interactions of upper arm*elbow and humeral rotation*forearm*endurance time. A supplementary experiment showed that in some of the deviated postures combinations the subjects required additional muscle force to achieve the 20% MVC from the original testing posture. Such data can be helpful for designing workplaces and developing biomechanical models, especially for assessment of designs in virtual environments. en_US
dc.language.iso eng en_US
dc.publisher IOS Press en_US
dc.relation.ispartofseries Occupational Ergonomics;7 (3), pp. 169-181
dc.subject humeral rotation en_US
dc.subject pronation en_US
dc.subject supination en_US
dc.subject musculoskeletal disorders en_US
dc.subject discomfort en_US
dc.subject torque MVC en_US
dc.title Effects of upper arm articulations on shoulder-arm discomfort profile in a pronation task 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 2017-04-11T15:18:39Z
dc.description.version ACCEPTED
dc.contributor.sponsor European Union (EU)
dc.relation.projectid GIRTH-CT-2001-005740 en_US
dc.rights.accessrights info:eu-repo/semantics/openAccess en_US
dc.internal.rssid 1135204
dc.internal.copyrightchecked Yes
dc.identifier.journaltitle Occupational Ergonomics
dc.description.status peer-reviewed


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