{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,11]],"date-time":"2026-09-11T16:05:24Z","timestamp":1789142724920,"version":"build-2803163510"},"reference-count":49,"publisher":"MDPI AG","issue":"2","license":[{"start":{"date-parts":[[2026,5,4]],"date-time":"2026-05-04T00:00:00Z","timestamp":1777852800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100002809","name":"Secretariat of the Universities and Research of the Department of Research and Universities of the Generalitat of Catalonia","doi-asserted-by":"publisher","award":["2025 FI-2 00538"],"award-info":[{"award-number":["2025 FI-2 00538"]}],"id":[{"id":"10.13039\/501100002809","id-type":"DOI","asserted-by":"publisher"}]},{"name":"European Social Plus Fund"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Medical Sciences"],"abstract":"<jats:p>Background: Performance-based tests (PBTs) objectively assess functional capacity and are increasingly applied in fibromyalgia (FM) to complement patient-reported outcomes (PROMs). However, evidence regarding their reliability, especially considering patients\u2019 socio-occupational status, is limited. This study aimed to determine test\u2013retest reliability of a standardized PBT battery in women with FM and to examine the influence of employment status on measurement stability. Methods: A total of 119 women were assessed (89 with FM). The battery included the 6 min walk test (6MWT), handgrip strength test (HST), and 8 feet up and go test (8FUGT). Test\u2013retest reliability was examined using the intraclass correlation coefficient (ICC), standard error of measurement (SEM), and smallest real difference (SRD). Analyses were conducted for the total FM group and socio-occupational subgroups (actively working, claiming disability, and permanent disability). Results: All PBTs demonstrated excellent test\u2013retest reliability. Measurement stability was consistently higher in controls. Absolute reliability indices confirmed acceptable measurement stability. However, the claiming disability group showed markedly higher SEM% and SRD% for HST, suggesting reduced reproducibility. The 6MWT and 8FUGT maintained excellent reliability and stability across all groups. PROMs showed good-to-excellent reliability. Conclusions: PBTs showed excellent reliability in women with FM. However, reliability varied across socio-occupational groups, particularly for HST in patients claiming disability. PROMSs showed lower reliability than PBTs.<\/jats:p>","DOI":"10.3390\/medsci14020236","type":"journal-article","created":{"date-parts":[[2026,5,5]],"date-time":"2026-05-05T07:57:29Z","timestamp":1777967849000},"page":"236","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Test\u2013Retest Reliability of a Performance-Based Test Battery in Patients with Fibromyalgia According to Socio-Occupational Status"],"prefix":"10.3390","volume":"14","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-4265-0568","authenticated-orcid":false,"given":"Jos\u00e9 Luis","family":"Socorro-Cumplido","sequence":"first","affiliation":[{"name":"Blanquerna School of Psychology, Education and Sports Sciences, Universitat Ramon Llull, 08022 Barcelona, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1804-2324","authenticated-orcid":false,"given":"Blanca","family":"Roman-Vi\u00f1as","sequence":"additional","affiliation":[{"name":"Blanquerna School of Psychology, Education and Sports Sciences, Universitat Ramon Llull, 08022 Barcelona, Spain"},{"name":"EUSES University School of Health and Sports, University of Girona, 17190 Salt, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4874-8013","authenticated-orcid":false,"given":"Miriam","family":"Almirall","sequence":"additional","affiliation":[{"name":"Rheumatology Department, University Hospital Vall d\u2019Hebron, 08035 Barcelona, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9356-7211","authenticated-orcid":false,"given":"Judith","family":"S\u00e1nchez-Raya","sequence":"additional","affiliation":[{"name":"Physical Medicine and Rehabilitation, Hospital Vall d\u2019Hebron, 08035 Barcelona, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Josep","family":"Blanch-Rubi\u00f3","sequence":"additional","affiliation":[{"name":"Rheumatology Department, Hospital del Mar, 08003 Barcelona, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Maria Jos\u00e9","family":"Castro","sequence":"additional","affiliation":[{"name":"Clinical Expertise Unit for Central Sensitization Syndromes, Hospital del Mar, 08003 Barcelona, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Maria","family":"Gin\u00e9-Garriga","sequence":"additional","affiliation":[{"name":"Blanquerna School of Psychology, Education and Sports Sciences, Universitat Ramon Llull, 08022 Barcelona, Spain"},{"name":"Blanquerna School of Health Sciences, Universitat Ramon Llull, 08025 Barcelona, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Patricia","family":"Launois","sequence":"additional","affiliation":[{"name":"Physical Medicine and Rehabilitation, Hospital Vall d\u2019Hebron, 08035 Barcelona, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2540-1455","authenticated-orcid":false,"given":"Tamara Libertad Rodr\u00edguez","family":"Araya","sequence":"additional","affiliation":[{"name":"Rheumatology Department, Hospital Clinic, 08036 Barcelona, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Anna Arias","family":"Gassol","sequence":"additional","affiliation":[{"name":"Rheumatology Department, Hospital Clinic, 08036 Barcelona, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3857-9666","authenticated-orcid":false,"given":"Raimon","family":"Mil\u00e0 Villarroel","sequence":"additional","affiliation":[{"name":"Blanquerna School of Health Sciences, Universitat Ramon Llull, 08025 Barcelona, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4097-4403","authenticated-orcid":false,"given":"Joaquim","family":"Chaler","sequence":"additional","affiliation":[{"name":"Physical Medicine and Rehabilitation Department, Hospital Egarsat, 08022 Barcelona, Spain"},{"name":"EUSES University School of Health and Sports, University of Girona, 08907 L\u2019Hospitalet de Llobregat, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2026,5,4]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"71","DOI":"10.1186\/1477-7525-9-71","article-title":"The Comparative Burden of Mild, Moderate and Severe Fibromyalgia: Results from a Cross-Sectional Survey in the United States","volume":"9","author":"Schaefer","year":"2011","journal-title":"Health Qual. 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