{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,23]],"date-time":"2026-09-23T06:46:31Z","timestamp":1790145991539,"version":"4.0.1"},"reference-count":62,"publisher":"Springer Science and Business Media LLC","issue":"1","license":[{"start":{"date-parts":[[2015,6,18]],"date-time":"2015-06-18T00:00:00Z","timestamp":1434585600000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"},{"start":{"date-parts":[[2015,6,18]],"date-time":"2015-06-18T00:00:00Z","timestamp":1434585600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"}],"content-domain":{"domain":["link.springer.com"],"crossmark-restriction":false},"short-container-title":["Arthritis Res Ther"],"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Introduction<\/jats:title>\n                    <jats:p>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.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>A total of 130 women with FM (age 22\u201364 years, symptom duration 0\u201335 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\u2019 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\u00ae), 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\u201318 months. Between-group and within-group differences were calculated using non-parametric statistics.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      Significant improvements were found for isometric knee-extension force (\n                      <jats:italic>p<\/jats:italic>\n                      = 0.010), health status (\n                      <jats:italic>p<\/jats:italic>\n                      = 0.038), current pain intensity (\n                      <jats:italic>p<\/jats:italic>\n                      = 0.033), 6MWT (\n                      <jats:italic>p<\/jats:italic>\n                      = 0.003), isometric elbow flexion force (\n                      <jats:italic>p<\/jats:italic>\n                      = 0.02), pain disability (\n                      <jats:italic>p<\/jats:italic>\n                      = 0.005), and pain acceptance (\n                      <jats:italic>p<\/jats:italic>\n                      = 0.043) in the resistance exercise group (\n                      <jats:italic>n<\/jats:italic>\n                      = 56) when compared to the control group (\n                      <jats:italic>n<\/jats:italic>\n                      = 49). PGIC differed significantly (\n                      <jats:italic>p<\/jats:italic>\n                      = 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\u201318 months.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>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.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Trial registration<\/jats:title>\n                    <jats:p>\n                      ClinicalTrials.gov identification number:\n                      <jats:ext-link xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" ext-link-type=\"uri\" xlink:href=\"https:\/\/clinicaltrials.gov\/ct2\/show\/NCT01226784?term=NCT01226784&amp;rank=1\">NCT01226784<\/jats:ext-link>\n                      , Oct 21, 2010.\n                    <\/jats:p>\n                  <\/jats:sec>","DOI":"10.1186\/s13075-015-0679-1","type":"journal-article","created":{"date-parts":[[2015,6,15]],"date-time":"2015-06-15T06:45:48Z","timestamp":1434350748000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":155,"title":["Resistance exercise improves muscle strength, health status and pain intensity in fibromyalgia\u2014a randomized controlled trial"],"prefix":"10.1186","volume":"17","author":[{"given":"Anette","family":"Larsson","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Annie","family":"Palstam","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Monika","family":"L\u00f6fgren","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Malin","family":"Ernberg","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jan","family":"Bjersing","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Indre","family":"Bileviciute-Ljungar","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Bj\u00f6rn","family":"Gerdle","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Eva","family":"Kosek","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kaisa","family":"Mannerkorpi","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2015,6,18]]},"reference":[{"key":"679_CR1","doi-asserted-by":"publisher","first-page":"765","DOI":"10.1097\/JOM.0b013e318222af81","volume":"53","author":"M McDonald","year":"2011","unstructured":"McDonald M, daCosta DiBonaventura M, Ullman S. 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