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Alternations between physical and cognitive tasks in repetitive work – Effect of cognitive task difficulty on fatigue development in women
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: 0000-0002-4283-4199
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
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: 0000-0002-2741-1868
2019 (English)In: Ergonomics, ISSN 0014-0139, E-ISSN 1366-5847, Vol. 62, no 8, p. 1008-1022Article in journal (Refereed) Published
Abstract [en]

In a context of job rotation, this study determined the extent to which the difficulty of a cognitive task (CT) interspersed between bouts of repetitive, low-intensity work (pipetting) influences recovery from fatigue. Fifteen participants performed three experimental sessions, each comprising 10 repeats of a 7 min + 3 min combination of pipetting and CT. The CT was easy, moderate or hard. Surface electromyography (EMG amplitude of the forearm extensor and trapezius muscles) and self-reports was used to assess fatigability. Perceived fatigue and trapezius EMG amplitude increased during sessions. CT difficulty influenced fatigue development only little, besides forearm extensor EMG increasing more in CT3 than in CT1 and CT2. During CT bouts, fatigability recovered, and to a similar extent irrespective of CT. Thus, CT difficulty influenced recovery of perceived as well as performance fatigability to a minor extent, and may not be a critical issue in job rotation comprising alternating physical and cognitive tasks.

Place, publisher, year, edition, pages
2019. Vol. 62, no 8, p. 1008-1022
Keywords [en]
Repetitive work, fatigue, recovery, physical load, mental load, variation
National Category
Occupational Health and Environmental Health
Identifiers
URN: urn:nbn:se:hig:diva-26536DOI: 10.1080/00140139.2019.1614229ISI: 000469647700001PubMedID: 31056015Scopus ID: 2-s2.0-85065848351OAI: oai:DiVA.org:hig-26536DiVA, id: diva2:1203604
Funder
AFA Insurance, 120223Available from: 2018-05-03 Created: 2018-05-03 Last updated: 2019-08-19Bibliographically approved

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Mixter, SusannaMathiassen, Svend ErikHallman, David

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