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Combining microdialysis and near infrared spectroscopy for studying effects of low-load repetitive work on the intramuscular chemistry in trapezius myalgia
University of Gävle, Centre for Musculoskeletal Research. University of Gävle, Faculty of Health and Occupational Studies, Department of Occupational and Public Health Sciences.
University of Gävle, Centre for Musculoskeletal Research. University of Gävle, Faculty of Health and Occupational Studies, Department of Occupational and Public Health Sciences.
University of Gävle, Centre for Musculoskeletal Research. University of Gävle, Faculty of Health and Occupational Studies, Department of Occupational and Public Health Sciences.ORCID iD: 0000-0002-4556-2846
Department of Community Medicine and Rehabilitation, Umeå University .
2010 (English)In: Journal of Biomedicine and Biotechnology, ISSN 1110-7243, E-ISSN 1110-7251, Vol. 2010, 513803Article in journal (Refereed) Published
Abstract [en]

Epidemiological research provides strong evidence for a link between repetitive work (RW) and the development of chronic trapezius myalgia (TM). The aims were to further elucidate if an accumulation of sensitising substances or impaired oxygenation is evident in painful muscles during RW. Females with TM (n=14) were studied during rest, 30 min RW and 60 min recovery. Microdialysate samples were obtained to determine changes in [glutamate], [PGE2], [lactate], and [pyruvate] relative to work. Muscle oxygenation (%StO2) was assessed using near-infrared spectroscopy. During work all investigated substances, except PGE2, increased significantly: [glutamate] (54%, P<0.0001), [lactate] (26%, P<0.005), [pyruvate] (19%, P<0.0001), while the %StO2 decreased (P<0.05). During recovery [PGE2] decreased (P<0.005), [lactate] remained increased (P<0.001), [pyruvate] increased progressively (P<0.0001), and %StO2 had returned to baseline. Changes in substance concentrations and oxygenation in response to work indicate normal increase in metabolism but no ongoing inflammation in subjects withTM.

Place, publisher, year, edition, pages
2010. Vol. 2010, 513803
Keyword [en]
glutamate, prostaglandin E2, lactate, pyruvate, trapezius muscle pain
National Category
Environmental Health and Occupational Health
Identifiers
URN: urn:nbn:se:hig:diva-6622DOI: 10.1155/2010/513803ISI: 000279789700001PubMedID: 20625491Scopus ID: 2-s2.0-77954546721OAI: oai:DiVA.org:hig-6622DiVA: diva2:307176
Note

Article ID 513803

Available from: 2010-04-01 Created: 2010-04-01 Last updated: 2016-07-04Bibliographically approved

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