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Consistent individual motor variability traits demonstrated by females performing a long-cycle assembly task under conditions differing in temporal organisation
University of Gävle, Faculty of Health and Occupational Studies, Department of Occupational Health Science and Psychology, Occupational Health Science. University of Gävle, Centre for Musculoskeletal Research.ORCID iD: 0000-0003-2939-0236
Department of Industrial and Systems Engineering, Virginia Tech, Blacksburg, Virginia, USA.ORCID iD: 0000-0001-9327-6177
University of Gävle, Faculty of Health and Occupational Studies, Department of Occupational Health Science and Psychology, Occupational Health Science. University of Gävle, Centre for Musculoskeletal Research.ORCID iD: 0000-0003-1443-6211
2019 (English)In: Applied Ergonomics, ISSN 0003-6870, E-ISSN 1872-9126Article in journal (Refereed) Submitted
Abstract [en]

Low motor variability (MV) during repetitive work has shown association with higher risk for developing work-related musculoskeletal disorders (MSDs). Whether consistent individual MV characteristics exist across working conditions remains unknown. This study aimed to determine if individual MV traits were consistent during complex assembly work performed under conditions differing in temporal organisation.

Fifteen women performed cyclic-assembly under four conditions differing in pace and organisation (line-type, batch-type). Variability of trapezius muscle activity and upper arm elevation was quantified. Total MV variance was partitioned into components attributable to subjects, days and conditions.

For all metrics, a non-zero between-subjects variance was found, indicating consistent individual MV traits across conditions. Variance between subjects was higher for EMG MV metrics compared with kinematic metrics.

Our results showed individuals exhibited consistent MV traits across working conditions differing in pace and production process, and support continued research into MV as a possible individual risk factor for MSDs.

Place, publisher, year, edition, pages
2019.
Keywords [en]
motor control, trapezius electromyography, upper arm elevation angle
National Category
Occupational Health and Environmental Health
Identifiers
URN: urn:nbn:se:hig:diva-30605OAI: oai:DiVA.org:hig-30605DiVA, id: diva2:1346648
Part of project
Forte-centre Working Life: The Body at Work - from problem to potential, ForteAvailable from: 2019-08-28 Created: 2019-08-28 Last updated: 2019-08-29Bibliographically approved

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Jackson, JennieSrinivasan, DivyaMathiassen, Svend Erik

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CiteExportLink to record
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