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dc.contributor.authorSandlund, J.
dc.contributor.authorSrinivasan, D.
dc.contributor.authorHeiden, M.
dc.contributor.authorMathiassen, Svend
dc.date.accessioned2018-06-29T12:28:11Z
dc.date.available2018-06-29T12:28:11Z
dc.date.created2018-06-29T12:09:02Z
dc.date.issued2017
dc.identifier.citationSandlund, J. and Srinivasan, D. and Heiden, M. and Mathiassen, S. 2017. Differences in motor variability among individuals performing a standardized short-cycle manual task. Human Movement Science. 51: pp. 17-26.
dc.identifier.urihttp://hdl.handle.net/20.500.11937/69028
dc.identifier.doi10.1016/j.humov.2016.10.009
dc.description.abstract

� 2016 Elsevier B.V. Motor variability (MV) has been suggested to be a determinant of the risk for developing musculoskeletal disorders in repetitive work. In this study we examined whether individuals consistently differed in the extent of motor variability when performing a standardized short-cycle manual task. On three separate days, arm kinematics was recorded in 14 healthy subjects performing a pipetting task, transferring liquid from a pick-up tube to eight target tubes with a cycle time of 2.8�s. Cycle-to-cycle standard deviations (SD) of a large selection of shoulder and elbow kinematic variables, were processed using principal component analysis (PCA). Thereafter, between-subjects and between-days (within-subject) variance components were calculated using a random effects model for each of four extracted principal components. The results showed that MV differed consistently between subjects (95% confidence intervals of the between-subjects variances did not include zero) and that subjects differed consistently in MV between days. Thus, our results support the notion that MV may be a consistent personal trait, even though further research is needed to verify whether individuals rank consistently in MV even across tasks. If so, MV may be a candidate determinant of the risk of developing fatigue and musculoskeletal disorders in repetitive occupational work.

dc.publisherElsevier BV; North Holland
dc.titleDifferences in motor variability among individuals performing a standardized short-cycle manual task
dc.typeJournal Article
dcterms.source.volume51
dcterms.source.startPage17
dcterms.source.endPage26
dcterms.source.issn0167-9457
dcterms.source.titleHuman Movement Science
curtin.departmentSchool of Physiotherapy and Exercise Science
curtin.accessStatusFulltext not available


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