ArticleBMC musculoskeletal disorders2009
Muscle modifications in fibromyalgic patients revealed by surface electromyography (SEMG) analysis.
Article in BMC musculoskeletal disorders, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.
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Who cites it
12 citing papers in PubMed, 29 citations in OpenAlex.
- Analysis of the Muscular Activity, Peak Torque in the Lower Limbs, and Static Balance after Virtual Rehabilitation in Women with Fibromyalgia: A Randomized Controlled Study.Games for health journal · 2021Trial
- Trial
- Evidence of Mitochondrial Dysfunction in Fibromyalgia: Deviating Muscle Energy Metabolism Detected Using Microdialysis and Magnetic Resonance.Journal of clinical medicine · 2020Article
- The impact of anxiety and catastrophizing on interleukin-6 responses to acute painful stress.Journal of pain research · 2018Article
- Balance deficiencies in women with fibromyalgia assessed using computerised dynamic posturography: a cross-sectional study in Spain.BMJ open · 2017Article
- Morphological Alterations in Gastrocnemius and Soleus Muscles in Male and Female Mice in a Fibromyalgia Model.PloS one · 2016Article
- Fibromyalgia: A Critical and Comprehensive Review.Clinical reviews in allergy & immunology · 2015Review
- Ischemia-hyperpnea test is useful to detect patients with fibromyalgia syndrome.European journal of rheumatology · 2015Article
- Prevalence of falls in fibromyalgia patients.Acta ortopedica brasileira · 2014Article
- Trapezius activity of fibromyalgia patients is enhanced in stressful situations, but is similar to healthy controls in a quiet naturalistic setting: a case-control study.BMC musculoskeletal disorders · 2013Article
- Thyroid autoimmunity may represent a predisposition for the development of fibromyalgia?Rheumatology international · 2012Article
- Postural control deficits in people with fibromyalgia: a pilot study.Arthritis research & therapy · 2011Article
Corrections and comments
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Authors and funding
10 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundSeveral studies have been carried out in order to investigate surface electromyography (SEMG) response on fibromyalgic (FM) patients. Some studies failed to demonstrate differences between FM patients and healthy individuals while others found differences in SEMG parameters. Different muscular region have been analyzed in FM patients and heterogeneity is also produced because of the different ways in which the SEMG technique is used. The aims of this study were to evaluate muscle modifications by SEMG analysis in FM women with respect to a sample of healthy controls and to investigate the relationships between SEMG parameters and the clinical aspects of the disease.
methodsSEMG was recorded in 100 FM women (48.10 +/- 11.96 yr) and in 50 healthy women (48.60 +/- 11.18 yr), from the tibialis anterior and the distal part of vastus medialis muscle during isometric contraction. Initial values and rate of change of median spectral frequency (MDF) and conduction velocity (CV) of the SEMG signal were calculated.The clinical parameters "Fibromyalgia Impact Questionnaire", pain, tender points, tiredness were evaluated and the relationships between these data and the SEMG results were also studied. For the statistical analysis Mann-Whitney test, chi-square test and Spearman correlation were used.
resultsMDF absolute values and the so-called Fatigue Index (FI) were significantly lower (p < 0.001) in both muscles studied in FM patients (MDF: 93.2 microV; FI: 1.10, 0.89) with respect to healthy controls (MDF: 138.2 microV; FI: 2.41, 1.66) and a smaller reduction in the percentage values of MDF was observed in FM patients vs controls (22% vs 38%). A significant correlation was found between the SEMG parameter decrement of normalized median frequency (MNF) (%) and seriousness of FM (evaluated by means of tender points).
conclusionWe have found some interesting muscle modifications in FM patients with respect to healthy controls, regarding MDF, CV and FI values which resulted significantly lower in FM. Patients might have a different fiber recruitment or a possible atrophy of type II fibers suggesting that they are not able to reach muscle relaxation.
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