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Are There Sex Differences in Wrist Velocity and Forearm Muscle Activity When Performing Identical Hand-Intensive Work Tasks?
Department of Epidemiology and Global Health, Umeå University, Umeå, S-901 87, Sweden; Department of Community Medicine and Rehabilitation, Physiotherapy, Umeå University, Umeå, S-901 87, Sweden.ORCID iD: 0000-0003-0882-818X
Department of Public Health and Clinical Medicine, Umeå University, Umeå, S-901 87, Sweden.
Section of Biomedical Engineering and Radiation Physics, Department of Diagnostics and Intervention, Umeå University, Umeå, S-901 87, Sweden.ORCID iD: 0000-0003-3363-7414
Department of Epidemiology and Global Health, Umeå University, Umeå, S-901 87, Sweden.
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2025 (English)In: Sensors, E-ISSN 1424-8220, Vol. 25, no 17, article id 5517Article in journal (Refereed) Published
Abstract [en]

Among workers performing hand-intensive tasks, musculoskeletal disorders in the upper extremities are more frequent in women than in men. However, risk assessments are generally not sex-specific, and it is not known whether exposures in regular work differ between females and males. The aim of this study was to compare measured wrist joint velocity and muscle activity between men and women performing identical tasks. Participants (28 female–male pairs) performed one of eighteen hand-intensive on-site tasks. Wrist velocity was measured using inertial units. Forearm muscle activity was measured via surface electromyography and normalized to maximal voluntary electrical activation (MVE). The 10th, 50th, and 90th percentiles and time in muscle recovery (< 0.5 %MVE) were computed. Between-sex differences were tested using the Wilcoxon signed-rank test. Wrist angular velocities did not significantly differ between sexes in any percentile (all p > 0.374). The muscle activity was significantly higher in female workers (p < 0.001–0.004), ranging from 1.3 to 2.8 times higher, and they spent less time in muscle recovery (p < 0.001). In hand-intensive tasks involving women and men, risk assessments should prioritize assessments of women to ensure protection against work-related musculoskeletal disorders for all workers.

Place, publisher, year, edition, pages
MDPI AG , 2025. Vol. 25, no 17, article id 5517
Keywords [en]
hand-intensive work, risk assessment, sex difference, surface electromyography, wrist angular velocity
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Occupational Health and Environmental Health
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URN: urn:nbn:se:kth:diva-370714DOI: 10.3390/s25175517ISI: 001571530900001PubMedID: 40942946Scopus ID: 2-s2.0-105015894614OAI: oai:DiVA.org:kth-370714DiVA, id: diva2:2002189
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QC 20250930

Available from: 2025-09-30 Created: 2025-09-30 Last updated: 2025-09-30Bibliographically approved

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Forsman, Mikael

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