{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,17]],"date-time":"2026-09-17T16:09:11Z","timestamp":1789661351442,"version":"4.0.1"},"reference-count":32,"publisher":"Elsevier BV","issue":"5","license":[{"start":{"date-parts":[[2026,10,1]],"date-time":"2026-10-01T00:00:00Z","timestamp":1790812800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/tdm\/userlicense\/1.0\/"},{"start":{"date-parts":[[2026,10,1]],"date-time":"2026-10-01T00:00:00Z","timestamp":1790812800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/legal\/tdmrep-license"},{"start":{"date-parts":[[2026,7,6]],"date-time":"2026-07-06T00:00:00Z","timestamp":1783296000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100003593","name":"Conselho Nacional de Desenvolvimento Cient\u00edfico e Tecnol\u00f3gico","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100003593","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001807","name":"State of Sao Paulo Research Foundation","doi-asserted-by":"publisher","award":["2022\/09447-7"],"award-info":[{"award-number":["2022\/09447-7"]}],"id":[{"id":"10.13039\/501100001807","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001807","name":"State of Sao Paulo Research Foundation","doi-asserted-by":"publisher","award":["2023\/07889-5"],"award-info":[{"award-number":["2023\/07889-5"]}],"id":[{"id":"10.13039\/501100001807","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["clinicalkey.com","clinicalkey.com.au","clinicalkey.es","clinicalkey.fr","clinicalkey.jp","sleephealthjournal.org","elsevier.com","sciencedirect.com"],"crossmark-restriction":true},"short-container-title":["Sleep Health"],"published-print":{"date-parts":[[2026,10]]},"DOI":"10.1016\/j.sleh.2026.07.002","type":"journal-article","created":{"date-parts":[[2026,8,24]],"date-time":"2026-08-24T19:54:34Z","timestamp":1787601274000},"page":"858-865","update-policy":"https:\/\/doi.org\/10.1016\/elsevier_cm_policy","source":"Crossref","is-referenced-by-count":0,"title":["Tracking sleep in ultramarathon male runners before, during, and after a mountain race: Actigraphic evidence of sleep restriction"],"prefix":"10.1016","volume":"12","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-8959-943X","authenticated-orcid":false,"given":"Nat\u00e1lia Vilela Silva","family":"Daniel","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5928-9265","authenticated-orcid":false,"given":"Diogo Thimoteo","family":"da Cunha","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6755-1099","authenticated-orcid":false,"given":"Taisa","family":"Belli","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6961-6688","authenticated-orcid":false,"given":"Andrea Maculano","family":"Esteves","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"78","reference":[{"issue":"1","key":"10.1016\/j.sleh.2026.07.002_bib1","doi-asserted-by":"crossref","first-page":"3","DOI":"10.1097\/JSA.0000000000000198","article-title":"Participation trends of ultra endurance events","volume":"27","author":"Scheer","year":"2019","journal-title":"Sports Med Arthrosc Rev"},{"issue":"7","key":"10.1016\/j.sleh.2026.07.002_bib2","doi-asserted-by":"crossref","first-page":"1052","DOI":"10.1123\/ijspp.2020-0151","article-title":"State of the science on ultramarathon running after a half century: a systematic analysis and commentary","volume":"15","author":"Hoffman","year":"2020","journal-title":"Int J Sports Physiol Perform"},{"issue":"5","key":"10.1016\/j.sleh.2026.07.002_bib3","doi-asserted-by":"crossref","first-page":"3006","DOI":"10.3390\/ijerph19053006","article-title":"Sleep\u2013wake behaviour of 200-mile ultra-marathon competitors: a case study","volume":"19","author":"Bianchi","year":"2022","journal-title":"Int J Environ Res Public Health"},{"issue":"2","key":"10.1016\/j.sleh.2026.07.002_bib4","doi-asserted-by":"crossref","first-page":"123","DOI":"10.1007\/s42978-021-00154-w","article-title":"Sleep and subjective recovery in amateur trail runners after the Ultra-Trail du Mont Blanc\u00ae (UTMB\u00ae)","volume":"5","author":"Baron","year":"2023","journal-title":"J Sci Sport Exerc"},{"issue":"1","key":"10.1016\/j.sleh.2026.07.002_bib5","doi-asserted-by":"crossref","first-page":"34","DOI":"10.1186\/s40798-024-00704-w","article-title":"Sleep and ultramarathon: exploring patterns, strategies, and repercussions of 1,154 mountain ultramarathons finishers","volume":"10","author":"Kishi","year":"2024","journal-title":"Sports Med Open"},{"issue":"2","key":"10.1016\/j.sleh.2026.07.002_bib6","doi-asserted-by":"crossref","first-page":"20","DOI":"10.3390\/clockssleep7020020","article-title":"The sleep\u2013wake cycle pattern of a blind trail ultramarathon runner and his guide: the world\u2019s first case","volume":"7","author":"Guilherme","year":"2025","journal-title":"Clocks Sleep"},{"issue":"2","key":"10.1016\/j.sleh.2026.07.002_bib7","doi-asserted-by":"crossref","first-page":"130","DOI":"10.1123\/ijsnem.2018-0255","article-title":"Nutrition for ultramarathon running: trail, track, and road","volume":"29","author":"Costa","year":"2019","journal-title":"Int J Sport Nutr Exerc Metab"},{"issue":"3","key":"10.1016\/j.sleh.2026.07.002_bib8","doi-asserted-by":"crossref","first-page":"330","DOI":"10.1080\/15438627.2015.1040916","article-title":"Sleep management strategy and performance in an extreme mountain ultra-marathon","volume":"23","author":"Poussel","year":"2015","journal-title":"Res Sports Med"},{"issue":"4","key":"10.1016\/j.sleh.2026.07.002_bib9","doi-asserted-by":"crossref","first-page":"482","DOI":"10.1080\/15438627.2018.1492401","article-title":"Cognitive performance and self-reported sleepiness are modulated by time-of-day during a mountain ultramarathon","volume":"26","author":"Hurdiel","year":"2018","journal-title":"Res Sports Med"},{"issue":"3","key":"10.1016\/j.sleh.2026.07.002_bib10","doi-asserted-by":"crossref","first-page":"428","DOI":"10.1017\/S0007114514000907","article-title":"Perturbed energy balance and hydration status in ultra-endurance runners during a 24h ultra-marathon","volume":"112","author":"Costa","year":"2014","journal-title":"Br J Nutr"},{"issue":"7","key":"10.1016\/j.sleh.2026.07.002_bib11","doi-asserted-by":"crossref","first-page":"670","DOI":"10.1080\/02640414.2014.960883","article-title":"Combined effects of sleep deprivation and strenuous exercise on cognitive performances during The North Face\u00ae Ultra Trail du Mont Blanc\u00ae (UTMB\u00ae)","volume":"33","author":"Hurdiel","year":"2015","journal-title":"J Sports Sci"},{"issue":"1","key":"10.1016\/j.sleh.2026.07.002_bib12","doi-asserted-by":"crossref","first-page":"100","DOI":"10.1080\/17461391.2020.1733670","article-title":"The examination of mental toughness, sleep, mood and injury rates in an Arctic ultra-marathon","volume":"21","author":"Graham","year":"2020","journal-title":"Eur J Sport Sci"},{"issue":"5","key":"10.1016\/j.sleh.2026.07.002_bib13","doi-asserted-by":"crossref","DOI":"10.1371\/journal.pone.0194705","article-title":"Sleep habits and strategies of ultramarathon runners","volume":"13","author":"Martin","year":"2018","journal-title":"PLoS One"},{"issue":"2","key":"10.1016\/j.sleh.2026.07.002_bib14","doi-asserted-by":"crossref","first-page":"161","DOI":"10.1007\/s40279-014-0260-0","article-title":"Sleep and athletic performance: the effects of sleep loss on exercise performance, and physiological and cognitive responses to exercise","volume":"45","author":"Fullagar","year":"2015","journal-title":"Sports Med"},{"key":"10.1016\/j.sleh.2026.07.002_bib15","doi-asserted-by":"crossref","first-page":"243","DOI":"10.2147\/NSS.S158598","article-title":"From pillow to podium: a review on understanding sleep for elite athletes","volume":"10","author":"O\u2019donnell","year":"2018","journal-title":"Nat Sci Sleep"},{"issue":"8","key":"10.1016\/j.sleh.2026.07.002_bib16","doi-asserted-by":"crossref","first-page":"513","DOI":"10.1136\/bjsports-2018-099322","article-title":"Effects of training and competition on the sleep of elite athletes: a systematic review and meta-analysis","volume":"53","author":"Roberts","year":"2019","journal-title":"Br J Sports Med"},{"issue":"2","key":"10.1016\/j.sleh.2026.07.002_bib17","doi-asserted-by":"crossref","first-page":"65","DOI":"10.26773\/mjssm.200907","article-title":"Wakeup call: reviewing the effects of sleep on decision-making in athletes and implications for sports officials","volume":"9","author":"Lastella","year":"2020","journal-title":"Montenegrin J Sports Sci Med"},{"issue":"4","key":"10.1016\/j.sleh.2026.07.002_bib18","doi-asserted-by":"crossref","first-page":"699","DOI":"10.1007\/s00421-017-3565-5","article-title":"One night of partial sleep deprivation impairs recovery from a single exercise training session","volume":"117","author":"Rae","year":"2017","journal-title":"Eur J Appl Physiol"},{"issue":"4","key":"10.1016\/j.sleh.2026.07.002_bib19","doi-asserted-by":"crossref","first-page":"1330","DOI":"10.3390\/nu13041330","article-title":"The sleep and recovery practices of athletes","volume":"13","author":"Doherty","year":"2021","journal-title":"Nutrients"},{"issue":"7","key":"10.1016\/j.sleh.2026.07.002_bib20","doi-asserted-by":"crossref","first-page":"792","DOI":"10.3390\/ejihpe12070058","article-title":"Running on empty: self-reported sleep\/wake behaviour during ultra-marathon events exceeding 100 miles","volume":"12","author":"Miller","year":"2022","journal-title":"Eur J Investig Health Psychol Educ"},{"key":"10.1016\/j.sleh.2026.07.002_bib21","doi-asserted-by":"crossref","first-page":"85","DOI":"10.1016\/j.sleep.2024.06.005","article-title":"Ultramarathon runners and support crew: the influence of pre-race sleep and training profiles on performance in a 217-km mountain race","volume":"120","author":"Daniel","year":"2024","journal-title":"Sleep Med"},{"issue":"10","key":"10.1016\/j.sleh.2026.07.002_bib22","doi-asserted-by":"crossref","first-page":"1487","DOI":"10.1007\/s40279-019-01119-4","article-title":"Sleep monitoring in athletes: motivation, methods, miscalculations and why it matters","volume":"49","author":"Halson","year":"2019","journal-title":"Sports Med"},{"issue":"10","key":"10.1016\/j.sleh.2026.07.002_bib23","doi-asserted-by":"crossref","first-page":"848","DOI":"10.1016\/j.jsams.2015.12.007","article-title":"The validity of activity monitors for measuring sleep in elite athletes","volume":"19","author":"Sargent","year":"2016","journal-title":"J Sci Med Sport"},{"issue":"4","key":"10.1016\/j.sleh.2026.07.002_bib24","doi-asserted-by":"crossref","first-page":"311","DOI":"10.1111\/apha.12134","article-title":"Sleep, its regulation and possible mechanisms of sleep disturbances","volume":"208","author":"Porkka-Heiskanen","year":"2013","journal-title":"Acta Physiol"},{"issue":"4","key":"10.1016\/j.sleh.2026.07.002_bib25","doi-asserted-by":"crossref","first-page":"233","DOI":"10.1016\/j.sleh.2015.10.004","article-title":"National Sleep Foundation\u2019s updated sleep duration recommendations: final report","volume":"1","author":"Hirshkowitz","year":"2015","journal-title":"Sleep Health"},{"key":"10.1016\/j.sleh.2026.07.002_bib26","first-page":"843","article-title":"Recommended amount of sleep for a healthy adult: a joint consensus statement of the American Academy of Sleep Medicine and Sleep Research Society","volume":"38","author":"Watson","year":"2015","journal-title":"Sleep"},{"issue":"7","key":"10.1016\/j.sleh.2026.07.002_bib27","doi-asserted-by":"crossref","first-page":"356","DOI":"10.1136\/bjsports-2020-102025","article-title":"Sleep and the athlete: narrative review and 2021 expert consensus recommendations","volume":"55","author":"Walsh","year":"2021","journal-title":"Br J Sports Med"},{"issue":"1","key":"10.1016\/j.sleh.2026.07.002_bib28","doi-asserted-by":"crossref","first-page":"13","DOI":"10.1016\/j.jsams.2014.02.007","article-title":"Understanding sleep disturbance in athletes prior to important competitions","volume":"18","author":"Juliff","year":"2015","journal-title":"J Sci Med Sport"},{"issue":"6","key":"10.1016\/j.sleh.2026.07.002_bib29","doi-asserted-by":"crossref","first-page":"413","DOI":"10.1249\/JSR.0000000000000418","article-title":"Sleep and athletic performance","volume":"16","author":"Watson","year":"2017","journal-title":"Curr Sports Med Rep"},{"issue":"2","key":"10.1016\/j.sleh.2026.07.002_bib30","doi-asserted-by":"crossref","first-page":"131","DOI":"10.1111\/jsr.12371","article-title":"The two-process model of sleep regulation: a reappraisal","volume":"25","author":"Borb\u00e9ly","year":"2016","journal-title":"J Sleep Res"},{"issue":"2","key":"10.1016\/j.sleh.2026.07.002_bib31","doi-asserted-by":"crossref","first-page":"269","DOI":"10.1007\/s40279-018-1015-0","article-title":"Effects of evening exercise on sleep in healthy participants: a systematic review and meta-analysis","volume":"49","author":"Stutz","year":"2019","journal-title":"Sports Med"},{"issue":"1","key":"10.1016\/j.sleh.2026.07.002_bib32","doi-asserted-by":"crossref","first-page":"6","DOI":"10.1016\/j.sleh.2016.11.006","article-title":"National Sleep Foundation\u2019s sleep quality recommendations: first report","volume":"3","author":"Ohayon","year":"2017","journal-title":"Sleep Health"}],"container-title":["Sleep Health"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S2352721826001531?httpAccept=text\/xml","content-type":"text\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S2352721826001531?httpAccept=text\/plain","content-type":"text\/plain","content-version":"vor","intended-application":"text-mining"}],"deposited":{"date-parts":[[2026,9,17]],"date-time":"2026-09-17T15:44:22Z","timestamp":1789659862000},"score":1,"resource":{"primary":{"URL":"https:\/\/linkinghub.elsevier.com\/retrieve\/pii\/S2352721826001531"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026,10]]},"references-count":32,"journal-issue":{"issue":"5","published-print":{"date-parts":[[2026,10]]}},"alternative-id":["S2352721826001531"],"URL":"https:\/\/doi.org\/10.1016\/j.sleh.2026.07.002","relation":{},"ISSN":["2352-7218"],"issn-type":[{"value":"2352-7218","type":"print"}],"subject":[],"published":{"date-parts":[[2026,10]]},"assertion":[{"value":"Elsevier","name":"publisher","label":"This article is maintained by"},{"value":"Tracking sleep in ultramarathon male runners before, during, and after a mountain race: Actigraphic evidence of sleep restriction","name":"articletitle","label":"Article Title"},{"value":"Sleep Health","name":"journaltitle","label":"Journal Title"},{"value":"https:\/\/doi.org\/10.1016\/j.sleh.2026.07.002","name":"articlelink","label":"CrossRef DOI link to publisher maintained version"},{"value":"article","name":"content_type","label":"Content Type"},{"value":"\u00a9 2026 The Author(s). Published by Elsevier Inc. on behalf of National Sleep Foundation.","name":"copyright","label":"Copyright"}]}}