Resistance exercise improves muscle strength, health status and pain intensity in fibromyalgia: a randomized controlled trial
2015 (English)In: Arthritis Research & Therapy, ISSN 1478-6354, E-ISSN 1478-6362, Vol. 17, no 161Article in journal (Refereed) Published
Introduction: Fibromyalgia (FM) is characterized by persistent widespread pain, increased pain sensitivity and tenderness. Muscle strength in women with FM is reduced compared to healthy women. The aim of this study was to examine the effects of a progressive resistance exercise program on muscle strength, health status, and current pain intensity in women with FM. Methods: A total of 130 women with FM (age 22-64 years, symptom duration 0-35 years) were included in this assessor-blinded randomized controlled multi-center trial examining the effects of progressive resistance group exercise compared with an active control group. A person-centred model of exercise was used to support the participants self-confidence for management of exercise because of known risks of activity-induced pain in FM. The intervention was performed twice a week for 15 weeks and was supervised by experienced physiotherapists. Primary outcome measure was isometric knee-extension force (Steve Strong (R)), secondary outcome measures were health status (FIQ total score), current pain intensity (VAS), 6MWT, isometric elbow-flexion force, hand-grip force, health related quality of life, pain disability, pain acceptance, fear avoidance beliefs, and patient global impression of change (PGIC). Outcomes were assessed at baseline and immediately after the intervention. Long-term follow up comprised the self-reported questionnaires only and was conducted after 13-18 months. Between-group and within-group differences were calculated using non-parametric statistics. Results: Significant improvements were found for isometric knee-extension force (p = 0.010), health status (p = 0.038), current pain intensity (p = 0.033), 6MWT (p = 0.003), isometric elbow flexion force (p = 0.02), pain disability (p = 0.005), and pain acceptance (p = 0.043) in the resistance exercise group (n = 56) when compared to the control group (n = 49). PGIC differed significantly (p = 0.001) in favor of the resistance exercise group at post-treatment examinations. No significant differences between the resistance exercise group and the active control group were found regarding change in self-reported questionnaires from baseline to 13-18 months. Conclusions: Person-centered progressive resistance exercise was found to be a feasible mode of exercise for women with FM, improving muscle strength, health status, and current pain intensity when assessed immediately after the intervention.
Place, publisher, year, edition, pages
BioMed Central , 2015. Vol. 17, no 161
IdentifiersURN: urn:nbn:se:liu:diva-120355DOI: 10.1186/s13075-015-0679-1ISI: 000357248900001PubMedID: 26084281OAI: oai:DiVA.org:liu-120355DiVA: diva2:843870
Funding Agencies|Swedish Rheumatism Association; Health and Medical Care Executive Board of Vastra Gotaland Region; ALF-LUA at Sahlgrenska University Hospital; Stockholm County Council (ALF); Norrbacka-Eugenia foundation; Gothenburg Center for Person Centered Care (GPCC); Swedish Research Council2015-07-312015-07-312015-09-02