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Muscle metabolism in fibromyalgia studied by P-31 magnetic resonance spectroscopy during aerobic and anaerobic exercise
Linköping University, Faculty of Health Sciences. Linköping University, Department of Medicine and Care, Radio Physics.
Linköping University, Faculty of Health Sciences. Linköping University, Department of Neuroscience and Locomotion, Rehabilitation Medicine. Östergötlands Läns Landsting, Centre for Medicine, Pain and Rehabilitation Centre.
Linköping University, Faculty of Health Sciences. Linköping University, Department of Medicine and Care, Clinical Physiology. Östergötlands Läns Landsting, Heart Centre, Department of Clinical Physiology.
Linköping University, Faculty of Health Sciences. Linköping University, Department of Molecular and Clinical Medicine, Rheumatology. Östergötlands Läns Landsting, Centre for Medicine, Department of Rheumatology in Östergötland.
2003 (English)In: Scandinavian Journal of Rheumatology, ISSN 0300-9742, E-ISSN 1502-7732, Vol. 32, no 3, 138-145 p.Article in journal (Refereed) Published
Abstract [en]

Objective: To investigate mechanisms underlying the reduced work capacity of fibromyalgia (FM) patients were compared to healthy controls at specified workloads, using P-31 magnetic resonance spectroscopy (MRS). Methods: The forearm flexor muscle group was examined with MRS at rest, at sub maximal and at maximal controlled dynamic work as well as at maximal isometric contraction. Aerobic fitness was determined by bicycle ergonometry. Results: Metabolite concentrations and muscle pH were similar for patients and controls at lower workloads. At maximal dynamic and static contractions the concentration of inorganic phosphate was lower and at static contractions the pH decrease was smaller in patients. The performed work by patients was only 50% compared to controls and the patients experienced more pain. Maximal oxygen uptake was lower in the fibromyalgia group. Expired gas-analysis in this group showed ventilatory equivalents at similar relative levels of maximal work capacity. Conclusion: Fibromyalgia patients seem to utilise less of the energy rich phosphorous metabolites at maximal work despite pH reduction. They seemed to be less aerobic fitted and reached the anaerobic threshold earlier than the controls.

Place, publisher, year, edition, pages
2003. Vol. 32, no 3, 138-145 p.
National Category
Medical and Health Sciences
Identifiers
URN: urn:nbn:se:liu:diva-26379DOI: 10.1080/03009740310002461Local ID: 10913OAI: oai:DiVA.org:liu-26379DiVA: diva2:246928
Available from: 2009-10-08 Created: 2009-10-08 Last updated: 2017-12-13

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Lund, EvaKendall, SallyJanerot-Sjöberg, BirgittaBengtsson, Ann

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Lund, EvaKendall, SallyJanerot-Sjöberg, BirgittaBengtsson, Ann
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Faculty of Health SciencesRadio PhysicsRehabilitation MedicinePain and Rehabilitation CentreClinical PhysiologyDepartment of Clinical PhysiologyRheumatologyDepartment of Rheumatology in Östergötland
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Scandinavian Journal of Rheumatology
Medical and Health Sciences

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