Change search
ReferencesLink to record
Permanent link

Direct link
Altered neuromuscular control mechanisms of the trapezius muscle in fibromyalgia.
Umeå University, Faculty of Medicine, Department of Radiation Sciences, Radiation Physics.
Umeå University, Faculty of Medicine, Department of Radiation Sciences, Radiation Physics.
Show others and affiliations
2010 (English)In: BMC Musculoskeletal Disorders, ISSN 1471-2474, Vol. 11, 42- p.Article in journal (Refereed) Published
Abstract [en]

BACKGROUND: fibromyalgia is a relatively common condition with widespread pain and pressure allodynia, but unknown aetiology. For decades, the association between motor control strategies and chronic pain has been a topic for debate. One long held functional neuromuscular control mechanism is differential activation between regions within a single muscle. The aim of this study was to investigate differences in neuromuscular control, i.e. differential activation, between myalgic trapezius in fibromyalgia patients and healthy controls. METHODS: 27 fibromyalgia patients and 30 healthy controls performed 3 minutes bilateral shoulder elevations with different loads (0-4 Kg) with a high-density surface electromyographical (EMG) grid placed above the upper trapezius. Differential activation was quantified by the power spectral median frequency of the difference in EMG amplitude between the cranial and caudal parts of the upper trapezius. The average duration of the differential activation was described by the inverse of the median frequency of the differential activations. RESULTS: the median frequency of the differential activations was significantly lower, and the average duration of the differential activations significantly longer in fibromyalgia compared with controls at the two lowest load levels (0-1 Kg) (p < 0.04), but not at the two highest load levels (2 and 4 Kg). CONCLUSION: these findings illustrate a different neuromuscular control between fibromyalgia patients and healthy controls during a low load functional task, either sustaining or resulting from the chronic painful condition. The findings may have clinical relevance for rehabilitation strategies for fibromyalgia.

Place, publisher, year, edition, pages
2010. Vol. 11, 42- p.
National Category
Medical and Health Sciences
URN: urn:nbn:se:umu:diva-33174DOI: 10.1186/1471-2474-11-42ISI: 000275666200001PubMedID: 20205731OAI: diva2:310510
Available from: 2010-04-14 Created: 2010-04-14 Last updated: 2011-08-24Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textPubMed

Search in DiVA

By author/editor
Grönlund, ChristerKarlsson, Stefan J
By organisation
Radiation Physics
In the same journal
BMC Musculoskeletal Disorders
Medical and Health Sciences

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 64 hits
ReferencesLink to record
Permanent link

Direct link