{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,5]],"date-time":"2026-06-05T06:31:58Z","timestamp":1780641118463,"version":"3.54.1"},"reference-count":32,"publisher":"MDPI AG","issue":"13","license":[{"start":{"date-parts":[[2019,7,2]],"date-time":"2019-07-02T00:00:00Z","timestamp":1562025600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100010198","name":"Ministerio de Econom\u00eda, Industria y Competitividad, Gobierno de Espa\u00f1a","doi-asserted-by":"publisher","award":["DEP2015-70356-R"],"award-info":[{"award-number":["DEP2015-70356-R"]}],"id":[{"id":"10.13039\/501100010198","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100008432","name":"Consejer\u00eda de Educaci\u00f3n y Empleo, Junta de Extremadura","doi-asserted-by":"publisher","award":["GR18155"],"award-info":[{"award-number":["GR18155"]}],"id":[{"id":"10.13039\/501100008432","id-type":"DOI","asserted-by":"publisher"}]},{"name":"Government of Extremadura","award":["PD16008"],"award-info":[{"award-number":["PD16008"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["IJERPH"],"abstract":"<jats:p>Background: The 30 s chair stand test is often used to evaluate physical fitness in chronic pain populations. In patients with fibromyalgia, physical fitness is closely related to pain, quality of life, and fear of falling. However, the reliability of this test has only been evaluated concerning the number of repetitions. Objective: To evaluate the test\u2013retest reliability of the 30 s chair stand test in women with fibromyalgia (n = 30), using data from the contact and non-contact time registered with an automatic chronometer (chronojump). Methods: Participants carried out the 30 s chair stand test twice with five minutes as a rest period, while an automatic chronometer recorded the time elapsed in contact with the chair (impulse phase) and not in contact (non-contact phase). Number and fear of falls in the last year and in the last six weeks were also recorded. Results: The reliability of duration of both phases was good. A relationship between these results and the number and fear of falling was also found. Conclusion: The analysis of movement phases in the 30 s chair stand test showed a good reliability in females with fibromyalgia, providing further useful information about the onset of muscle fatigue during the test.<\/jats:p>","DOI":"10.3390\/ijerph16132344","type":"journal-article","created":{"date-parts":[[2019,7,2]],"date-time":"2019-07-02T12:11:17Z","timestamp":1562069477000},"page":"2344","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":20,"title":["Reliability of the 30 s Chair Stand Test in Women with Fibromyalgia"],"prefix":"10.3390","volume":"16","author":[{"given":"Juan Pedro","family":"Mart\u00edn-Mart\u00ednez","sequence":"first","affiliation":[{"name":"Faculty of Sport Science, University of Extremadura, Avda: Universidad S\/N, 10003 C\u00e1ceres, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5140-465X","authenticated-orcid":false,"given":"Daniel","family":"Collado-Mateo","sequence":"additional","affiliation":[{"name":"Faculty of Sport Science, University of Extremadura, Avda: Universidad S\/N, 10003 C\u00e1ceres, Spain"},{"name":"Facultad de Educaci\u00f3n, Universidad Aut\u00f3noma de Chile, Talca 1670, Chile"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Francisco Javier","family":"Dom\u00ednguez-Mu\u00f1oz","sequence":"additional","affiliation":[{"name":"Faculty of Sport Science, University of Extremadura, Avda: Universidad S\/N, 10003 C\u00e1ceres, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0784-1753","authenticated-orcid":false,"given":"Santos","family":"Villafaina","sequence":"additional","affiliation":[{"name":"Faculty of Sport Science, University of Extremadura, Avda: Universidad S\/N, 10003 C\u00e1ceres, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1001-8883","authenticated-orcid":false,"given":"Narc\u00eds","family":"Gusi","sequence":"additional","affiliation":[{"name":"Faculty of Sport Science, University of Extremadura, Avda: Universidad S\/N, 10003 C\u00e1ceres, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jorge","family":"P\u00e9rez-G\u00f3mez","sequence":"additional","affiliation":[{"name":"Faculty of Sport Science, University of Extremadura, Avda: Universidad S\/N, 10003 C\u00e1ceres, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2019,7,2]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"600","DOI":"10.1002\/acr.20140","article-title":"The American College of Rheumatology preliminary diagnostic criteria for fibromyalgia and measurement of symptom severity","volume":"62","author":"Wolfe","year":"2010","journal-title":"Arthritis Care Res."},{"key":"ref_2","first-page":"589014","article-title":"Fear of Falling in Women with Fibromyalgia and Its Relation with Number of Falls and Balance Performance","volume":"2015","author":"Adsuar","year":"2015","journal-title":"Biomed Res. 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