Article (Scientific journals)
Fibromyalgia and related conditions: Electromyogram profile during isometric muscle contraction
Maquet, Didier; Croisier, Jean-Louis; Dupont, Catherine et al.
2010In Joint Bone Spine, 77, p. 264–267
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Keywords :
Fibromyalgia; Chronic fatigue syndrome; depression; muscle; electromyogram
Abstract :
[en] Objectives: To evaluate electromyogram (EMG) profiles in patients with three related conditions: fibromyalgia, chronic fatigue syndrome, and depression. Methods: We studied 44 healthy volunteers, 22 patients with fibromyalgia, 11 patients with chronic fatigue syndrome, and 10 patients admitted for depression. The trapezius electromyogram was recorded during maximally sustained, bilateral, 90◦ abduction of the shoulders. EMG signal frequency and amplitude were measured throughout the test. Results: In the fibromyalgia group, isometric contraction duration was significantly shorter than in the other two patient groups (P < 0.001) and the EMG frequency and amplitude pattern indicated premature discontinuation of the muscle contraction. Findings in the chronic fatigue patients were similar to those in the healthy controls. The patients with depression had a distinctive EMG profile characterized by excessive initial motor-unit recruitment with a shift in the frequency spectrum. Conclusions: Fibromyalgia was associated with a specific EMG pattern indicating premature discontinuation of the muscle contraction. Therefore, maximal voluntary muscle contraction tests may be of limited value for assessing function in fibromyalgia patients. Chronic fatigue syndrome patients had similar EMG findings to those in the healthy controls. The EMG alterations in the patients with depression were consistent with manifestations of psychomotor retardation.
Disciplines :
Laboratory medicine & medical technology
Orthopedics, rehabilitation & sports medicine
Author, co-author :
Maquet, Didier ;  Université de Liège - ULiège > Département des sciences de la motricité > Département des sciences de la motricité
Croisier, Jean-Louis ;  Université de Liège - ULiège > Département des sciences de la motricité > Kinésithérapie générale et réadaptation
Dupont, Catherine ;  Université de Liège - ULiège > Médecine de l'appareil locomoteur
Moutschen, Michel  ;  Université de Liège - ULiège > Département des sciences cliniques > GIGA-R:Immunopath. - Maladies infect. et médec. inter. gén.
Ansseau, Marc ;  Université de Liège - ULiège > Département des sciences cliniques > Psychiatrie et psychologie médicale
Zeevaert, Bernard ;  Université de Liège - ULiège > Médecine de l'appareil locomoteur
Crielaard, Jean-Michel ;  Université de Liège - ULiège > Département des sciences de la motricité > Evaluation et entraînement des aptitudes physiques - Médecine physique et réadaptation fonctionnelle
Language :
English
Title :
Fibromyalgia and related conditions: Electromyogram profile during isometric muscle contraction
Publication date :
2010
Journal title :
Joint Bone Spine
ISSN :
1297-319X
eISSN :
1778-7254
Publisher :
Elsevier Science, Paris, France
Volume :
77
Pages :
264–267
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 27 April 2010

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