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Consistent individual motor variability traits demonstrated by females performing a long-cycle assembly task under conditions differing in temporal organisation

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dc.contributor.authorJackson, Jennie A.en
dc.contributor.authorSrinivasan, Divyaen
dc.contributor.authorMathiassen, Svend Eriken
dc.contributor.departmentIndustrial and Systems Engineeringen
dc.date.accessioned2020-12-23T20:06:36Zen
dc.date.available2020-12-23T20:06:36Zen
dc.date.issued2020-05en
dc.description.abstractResearch suggests an association between motor variability (MV) during repetitive work and work-related musculoskeletal disorders (MSDs). However, whether MV is a consistent individual trait, even across working conditions or tasks, remains unknown. This study assessed whether individual MV traits were consistent during complex work performed under different temporal conditions. Fifteen women performed cyclic assembly under four conditions differing in pace and organisation (line-type, batch-type). MV of trapezius muscle activity and upper arm elevation was quantified and partitioned into variance components. For all MV metrics, a non-zero between-subjects variance was found, indicating consistent individual MV traits across conditions. Variance between subjects was higher for electromyography (EMG) MV metrics compared with kinematic metrics. Our results showed individuals exhibited consistent MV traits across working conditions differing in pace and production process. Further research is needed to understand whether MV is an individual predictive factor for MSD onset or progression.en
dc.description.notesThe authors would like to acknowledge Niall V. O'Brien and Patrick Dempsey for their assistance in study design and data collection efforts. We are also grateful to the Liberty Mutual Research Institute for Safety for financial support and hosting the data collection, and for the financial support received from the Canadian National Science and Engineering Research Council and the Swedish Research Council for Health, Working Life and Welfare, Forte grant: 2009-1761.en
dc.description.sponsorshipLiberty Mutual Research Institute for Safety; Canadian National Science and Engineering Research CouncilNatural Sciences and Engineering Research Council of Canada; Swedish Research Council for Health, Working Life and Welfare, Forte grant [2009-1761]en
dc.format.mimetypeapplication/pdfen
dc.identifier.doihttps://doi.org/10.1016/j.apergo.2020.103046en
dc.identifier.eissn1872-9126en
dc.identifier.issn0003-6870en
dc.identifier.other103046en
dc.identifier.pmid32174342en
dc.identifier.urihttp://hdl.handle.net/10919/101628en
dc.identifier.volume85en
dc.language.isoenen
dc.rightsCreative Commons Attribution-NonCommercial-NoDerivs 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/en
dc.subjectMotor controlen
dc.subjectTrapezius electromyographyen
dc.subjectUpper arm elevation angleen
dc.titleConsistent individual motor variability traits demonstrated by females performing a long-cycle assembly task under conditions differing in temporal organisationen
dc.title.serialApplied Ergonomicsen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten
dc.type.dcmitypeStillImageen

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