{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,25]],"date-time":"2026-02-25T15:37:19Z","timestamp":1772033839463,"version":"3.50.1"},"reference-count":29,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2020,10,29]],"date-time":"2020-10-29T00:00:00Z","timestamp":1603929600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"DOI":"10.13039\/100000069","name":"National Institute of Arthritis and Musculoskeletal and Skin Diseases","doi-asserted-by":"publisher","award":["R01AR005160"],"award-info":[{"award-number":["R01AR005160"]}],"id":[{"id":"10.13039\/100000069","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100000069","name":"National Institute of Arthritis and Musculoskeletal and Skin Diseases","doi-asserted-by":"publisher","award":["R01AR055160"],"award-info":[{"award-number":["R01AR055160"]}],"id":[{"id":"10.13039\/100000069","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Journal of Sleep Research"],"published-print":{"date-parts":[[2021,2]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Patients with fibromyalgia (FM) suffer from chronic pain, which limits physical activity and is associated with disturbed sleep. However, the relationship between physical activity, pain and sleep is unclear in these patients. This study examined whether actigraphic (Actiwatch\u20102, Philips Respironics) afternoon and evening activity and pain are associated with actigraphic sleep. Adults with FM and insomnia complaints (<jats:italic>n<\/jats:italic>\u00a0=\u00a0160, mean age [<jats:italic>M<\/jats:italic><jats:sub>age<\/jats:sub>]\u00a0=\u00a052, <jats:italic>SD<\/jats:italic>\u00a0=\u00a012, 94% female) completed 14\u00a0days of actigraphy. Activity levels (i.e., activity counts per minute) were recorded, and average afternoon\/evening activity for intervals 12:00\u20133:00\u00a0PM, 3:00\u20136:00\u00a0PM and 6:00\u20139:00\u00a0PM was computed. Multiple linear regressions examined whether afternoon\/evening activity, pain (daily evening diaries from 0 [no pain sensation] to 100 [most intense pain imaginable]), or their interaction, predicted sleep onset latency (SOL), wake time after sleep onset (WASO), total sleep time (TST) and sleep efficiency (SE). Greater afternoon activity was independently associated with lower SE (<jats:italic>B<\/jats:italic>\u00a0=\u00a0\u22120.08, <jats:italic>p<\/jats:italic>\u00a0&lt;\u00a0.001), lower TST (<jats:italic>\u03b2<\/jats:italic>\u00a0=\u00a0\u22120.36, standard error [<jats:italic>SE<\/jats:italic>]\u00a0=\u00a00.06, <jats:italic>p<\/jats:italic>\u00a0&lt;\u00a0.001) and longer WASO (<jats:italic>B<\/jats:italic>\u00a0=\u00a00.34, <jats:italic>p<\/jats:italic>\u00a0&lt;\u00a0.001). Greater early evening activity was independently associated with lower SE (<jats:italic>B<\/jats:italic>\u00a0=\u00a0\u22120.06, <jats:italic>p<\/jats:italic>\u00a0&lt;\u00a0.001), lower TST (<jats:italic>\u03b2<\/jats:italic>\u00a0=\u00a0\u22120.26, <jats:italic>SE<\/jats:italic>\u00a0=\u00a00.06, <jats:italic>p<\/jats:italic>\u00a0&lt;\u00a0.001) and longer WASO (<jats:italic>B<\/jats:italic>\u00a0=\u00a00.23, <jats:italic>p<\/jats:italic>\u00a0&lt;\u00a0.001). Self\u2010reported pain intensity interacted with afternoon and early evening physical activity, such that associations between higher activity and lower SE were stronger for individuals reporting higher pain. Late evening activity was not associated with sleep outcomes. Results suggest that in FM, increased afternoon and early evening physical activity is associated with sleep disturbance, and this relationship is stronger in individuals with higher pain.<\/jats:p>","DOI":"10.1111\/jsr.13220","type":"journal-article","created":{"date-parts":[[2020,10,30]],"date-time":"2020-10-30T01:14:05Z","timestamp":1604020445000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":7,"title":["Associations between objective afternoon and evening physical activity and objective sleep in patients with fibromyalgia and insomnia"],"prefix":"10.1111","volume":"30","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-6999-0765","authenticated-orcid":false,"given":"Kevin D.","family":"McGovney","sequence":"first","affiliation":[{"name":"Department of Psychological Sciences University of Missouri Columbia MO USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2311-5674","authenticated-orcid":false,"given":"Ashley F.","family":"Curtis","sequence":"additional","affiliation":[{"name":"Department of Psychological Sciences University of Missouri Columbia MO USA"},{"name":"Department of Psychiatry University of Missouri Columbia MO USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4313-6867","authenticated-orcid":false,"given":"Christina S.","family":"McCrae","sequence":"additional","affiliation":[{"name":"Department of Psychiatry University of Missouri Columbia MO USA"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2020,10,29]]},"reference":[{"key":"e_1_2_8_2_1","doi-asserted-by":"publisher","DOI":"10.2522\/ptj.20130302"},{"key":"e_1_2_8_3_1","doi-asserted-by":"publisher","DOI":"10.1177\/0193945906297371"},{"key":"e_1_2_8_4_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.smrv.2009.05.002"},{"key":"e_1_2_8_5_1","doi-asserted-by":"publisher","DOI":"10.1111\/sms.13318"},{"key":"e_1_2_8_6_1","doi-asserted-by":"publisher","DOI":"10.1007\/s11325-012-0709-z"},{"key":"e_1_2_8_7_1","doi-asserted-by":"publisher","DOI":"10.1007\/s11916-011-0214-2"},{"key":"e_1_2_8_8_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.semarthrit.2014.01.001"},{"key":"e_1_2_8_9_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jpain.2013.08.007"},{"key":"e_1_2_8_10_1","doi-asserted-by":"publisher","DOI":"10.1155\/2013\/918216"},{"key":"e_1_2_8_11_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.smrv.2014.10.001"},{"key":"e_1_2_8_12_1","doi-asserted-by":"publisher","DOI":"10.1002\/art.20779"},{"key":"e_1_2_8_13_1","doi-asserted-by":"publisher","DOI":"10.1016\/S1389-9457(00)00098-8"},{"key":"e_1_2_8_14_1","doi-asserted-by":"publisher","DOI":"10.1249\/MSS.0000000000000361"},{"key":"e_1_2_8_15_1","doi-asserted-by":"publisher","DOI":"10.1136\/annrheumdis-2016-209724"},{"key":"e_1_2_8_16_1","doi-asserted-by":"publisher","DOI":"10.1378\/chest.10-1872"},{"key":"e_1_2_8_17_1","doi-asserted-by":"publisher","DOI":"10.1093\/sleep\/zsy234"},{"key":"e_1_2_8_18_1","doi-asserted-by":"publisher","DOI":"10.1093\/sleep\/zsz067.424"},{"key":"e_1_2_8_19_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1365-2869.2011.00929.x"},{"key":"e_1_2_8_20_1","doi-asserted-by":"publisher","DOI":"10.1186\/1471-2474-10-122"},{"key":"e_1_2_8_21_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00421-014-2873-2"},{"key":"e_1_2_8_22_1","doi-asserted-by":"publisher","DOI":"10.1097\/AJP.0000000000000526"},{"key":"e_1_2_8_23_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jcrc.2014.05.014"},{"key":"e_1_2_8_24_1","doi-asserted-by":"publisher","DOI":"10.1002\/art.39252"},{"key":"e_1_2_8_25_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.sleh.2016.09.001"},{"key":"e_1_2_8_26_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jpsychores.2006.09.013"},{"key":"e_1_2_8_27_1","doi-asserted-by":"publisher","DOI":"10.1371\/journal.pone.0138024"},{"issue":"9","key":"e_1_2_8_28_1","first-page":"1","article-title":"The London fibromyalgia epidemiology study: The prevalence of fibromyalgia syndrome in London, Ontario","volume":"10","author":"White K. 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