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Partly visible periods in posture observation from video: prevalence and effect on summary estimates of postures in the job
University of Gävle, Faculty of Health and Occupational Studies, Department of Occupational and Public Health Sciences, Occupational health science. University of Gävle, Centre for Musculoskeletal Research.
University of Gävle, Faculty of Health and Occupational Studies, Department of Occupational and Public Health Sciences, Occupational health science. University of Gävle, Centre for Musculoskeletal Research.ORCID iD: 0000-0003-1443-6211
School of Public Health, University of Saskatchewan, Canada.
2015 (English)In: Applied Ergonomics, ISSN 0003-6870, E-ISSN 1872-9126, Vol. 49, p. 63-69Article in journal (Refereed) Published
Abstract [en]

We investigated the extent to which observers rate clearly visible postures on video differently from postures that are only partly visible, and whether this would have an effect on full-shift posture summaries. Trunk and upper arm postures were observed from 10,413 video frames representing 80 shifts of baggage handling; observers reported whether postures were fully or only partly visible.  Postures were summarized for each shift into several standard metrics using all available data, only fully visible frames, or only partly visible frames. 78% of trunk and 71% of upper arm postural observations were inferred.  When based on all data, mean and 90th percentile trunk postures were 1.3° and 5.4° lower, respectively, than when based only on fully visible situations.  For the arm; differences in mean and 90thpercentile were 2.5° and 8.1°.  Daily posture summaries can, thus, be significantly influenced by whether partly visible postures are included or not

Place, publisher, year, edition, pages
2015. Vol. 49, p. 63-69
Keywords [en]
Observation, ergonomics, posture, exposure assessment, validity
National Category
Occupational Health and Environmental Health
Identifiers
URN: urn:nbn:se:hig:diva-17479DOI: 10.1016/j.apergo.2015.02.001ISI: 000351978800009PubMedID: 25766424Scopus ID: 2-s2.0-84924229100OAI: oai:DiVA.org:hig-17479DiVA, id: diva2:744941
Funder
Forte, Swedish Research Council for Health, Working Life and Welfare, 2009-1761AFA Insurance, 100071Available from: 2014-09-09 Created: 2014-09-09 Last updated: 2018-03-13Bibliographically approved

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Trask, CatherineMathiassen, Svend Erik

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