{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,18]],"date-time":"2026-04-18T07:35:11Z","timestamp":1776497711900,"version":"3.51.2"},"reference-count":41,"publisher":"BMJ","issue":"1","funder":[{"DOI":"10.13039\/100020908","name":"Pfizer France","doi-asserted-by":"crossref","id":[{"id":"10.13039\/100020908","id-type":"DOI","asserted-by":"crossref"}]},{"name":"Lilly France"},{"name":"BMS France"}],"content-domain":{"domain":["bmj.com"],"crossmark-restriction":true},"short-container-title":["RMD Open"],"accepted":{"date-parts":[[2017,5,16]]},"published-print":{"date-parts":[[2017,6]]},"abstract":"<jats:sec>\n                  <jats:title>Background<\/jats:title>\n                  <jats:p>The evolution of rheumatoid arthritis (RA) and axial spondyloarthritis (axSpA) is marked by flares, although their frequency is unclear. Flares may impact physical activity. Activity can be assessed objectively using activity trackers. The objective was to assess longitudinally the frequency of flares and the association between flares and objective physical activity.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Methods<\/jats:title>\n                  <jats:p>This prospective observational study (ActConnect) included patients with definite clinician-confirmed RA or axSpA, owning a smartphone. During 3 months, physical activity was assessed continuously by number of steps\/day, using an activity tracker, and disease flares were self-assessed weekly using a specific flare question and, if relevant, the duration of the flare. The relationship between flares and physical activity for each week (time point) was assessed by linear mixed models.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Results<\/jats:title>\n                  <jats:p>In all, 170\/178 patients (91 patients with RA and 79 patients with axSpA; 1553 time points) were analysed: mean age was 45.5\u00b112.4 years, mean disease duration was 10.3\u00b18.7 years, 60 (35.3%) were men and 90 (52.9%) received biologics. The disease was well-controlled (mean Disease Activity Score 28: 2.3\u00b11.2; mean Bath Ankylosing Spondylitis Disease Activity Index score: 3.3\u00b12.1). Patients self-reported flares in 28.2%\u00b128.1% of the weekly assessments. Most flares (78.9%\u00b131.4%) lasted \u22643 days. Persistent flares lasting more than 3 days were independently associated with less weekly physical activity (p=0.03), leading to a relative decrease of 12%\u201321%\u2009and an absolute decrease ranging from 836 to 1462 steps\/day.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Conclusion<\/jats:title>\n                  <jats:p>Flares were frequent but usually of short duration in these stable patients with RA and axSpA. Persistent flares were related to a moderate decrease in physical activity, confirming objectively the functional impact of patient-reported flares.<\/jats:p>\n               <\/jats:sec>","DOI":"10.1136\/rmdopen-2017-000434","type":"journal-article","created":{"date-parts":[[2017,6,29]],"date-time":"2017-06-29T20:10:56Z","timestamp":1498767056000},"page":"e000434","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":41,"title":["Flares assessed weekly in patients with rheumatoid arthritis or axial spondyloarthritis and relationship with physical activity measured using a connected activity tracker: a 3-month study"],"prefix":"10.1136","volume":"3","author":[{"given":"Charlotte","family":"Jacquemin","sequence":"first","affiliation":[{"name":"Rheumatology Department, UPMC University Paris 06, GRC-UPMC 08 (EEMOIS), Piti\u00e9 Salp\u00eatri\u00e8re Hospital, APHP, Paris, France"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Anna","family":"Molto","sequence":"additional","affiliation":[{"name":"Rheumatology B Department, Cochin Hospital, AP-HP, Paris, France"},{"name":"INSERM (U1153), Clinical Epidemiology and Biostatistics, PRES Sorbonne Paris-Cit\u00e9, Paris Descartes University, Paris, France"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Herv\u00e9","family":"Servy","sequence":"additional","affiliation":[{"name":"Sano\u00efa, e-Health Services, Gardanne, France"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"J\u00e9r\u00e9mie","family":"Sellam","sequence":"additional","affiliation":[{"name":"Rheumatology Department, INSERM UMRS_938, Sorbonnes University, UPMC University Paris 06, St-Antoine Hospital, DHU i2B, Paris, France"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Violaine","family":"Foltz","sequence":"additional","affiliation":[{"name":"Rheumatology Department, UPMC University Paris 06, GRC-UPMC 08 (EEMOIS), Piti\u00e9 Salp\u00eatri\u00e8re Hospital, APHP, Paris, France"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Fr\u00e9d\u00e9rique","family":"Gandjbakhch","sequence":"additional","affiliation":[{"name":"Rheumatology Department, UPMC University Paris 06, GRC-UPMC 08 (EEMOIS), Piti\u00e9 Salp\u00eatri\u00e8re Hospital, APHP, Paris, France"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Christophe","family":"Hudry","sequence":"additional","affiliation":[{"name":"Rheumatology B Department, Cochin Hospital, AP-HP, Paris, France"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"St\u00e9phane","family":"Mitrovic","sequence":"additional","affiliation":[{"name":"Rheumatology Department, UPMC University Paris 06, GRC-UPMC 08 (EEMOIS), Piti\u00e9 Salp\u00eatri\u00e8re Hospital, APHP, Paris, France"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Benjamin","family":"Granger","sequence":"additional","affiliation":[{"name":"Biostatistics Department, Piti\u00e9 Salp\u00eatri\u00e8re Hospital, APHP, Paris, France"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Bruno","family":"Fautrel","sequence":"additional","affiliation":[{"name":"Rheumatology Department, UPMC University Paris 06, GRC-UPMC 08 (EEMOIS), Piti\u00e9 Salp\u00eatri\u00e8re Hospital, APHP, Paris, France"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Laure","family":"Gossec","sequence":"additional","affiliation":[{"name":"Rheumatology Department, UPMC University Paris 06, GRC-UPMC 08 (EEMOIS), Piti\u00e9 Salp\u00eatri\u00e8re Hospital, APHP, Paris, France"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"239","published-online":{"date-parts":[[2017,6,29]]},"reference":[{"key":"2025090312232695000_3.1.e000434.1","doi-asserted-by":"publisher","DOI":"10.1093\/rheumatology\/ken176"},{"key":"2025090312232695000_3.1.e000434.2","doi-asserted-by":"publisher","DOI":"10.1136\/ard.2010.142901"},{"key":"2025090312232695000_3.1.e000434.3","doi-asserted-by":"publisher","DOI":"10.1136\/annrheumdis-2013-203967"},{"key":"2025090312232695000_3.1.e000434.4","doi-asserted-by":"publisher","DOI":"10.1136\/ard.2011.153734"},{"key":"2025090312232695000_3.1.e000434.5","doi-asserted-by":"publisher","DOI":"10.1136\/annrheumdis-2015-208593"},{"key":"2025090312232695000_3.1.e000434.6","doi-asserted-by":"publisher","DOI":"10.1136\/rmdopen-2015-000225"},{"key":"2025090312232695000_3.1.e000434.7","first-page":"2250","article-title":"Incorporating the patient perspective into outcome assessment in rheumatoid arthritis\u2013progress at OMERACT 7","volume":"32","author":"Kirwan","year":"2005","journal-title":"J Rheumatol"},{"key":"2025090312232695000_3.1.e000434.8","doi-asserted-by":"publisher","DOI":"10.1002\/1529-0131(200108)45:4<372::AID-ART350>3.0.CO;2-D"},{"key":"2025090312232695000_3.1.e000434.9","doi-asserted-by":"crossref","unstructured":"Fautrel B , Morel J , Berthelot J-M , et al . 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