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Sleep\u2013wake patterns are crucial for optimal performances in UTRs, which present unique physiological and behavioral challenges. This case study evaluated the sleep\u2013wake cycle of a blind trail ultramarathoner (BTR) and his guide (GTR) before, during, and after an 80 km UTR. Two male participants (BTR: 54 years, BMI: 26.1 kg\/m2; GTR: 48 years, BMI: 24.2 kg\/m2) were assessed using validated questionnaires (MEQ, ESS, ISI, and PSQI) and actigraphy over 35 days. The BTR exhibited a morning chronotype (MEQ = 63), mild insomnia (ISI = 11), poor sleep quality (PSQI = 5), and prolonged sleep latency (&gt;60 min), while the GTR showed an indifferent chronotype (MEQ = 52), good sleep quality (PSQI = 3), and shorter latency (10 min). Post-competition, both athletes experienced an increased total sleep time (TST): the BTR by 17.8% (05:32:00 vs. 04:25:00) and the GTR by 5.5% (07:01:00 vs. 06:39:00). The BTR demonstrated a greater Wakefulness after sleep onset (WASO 01:00:00 vs. 00:49:00) and awakenings (15.4 vs. 6.1). A time series analysis revealed greater variability in the BTR\u2019s post-competition sleep efficiency and TST, while the GTR exhibited a greater stability of the circadian phase. These findings highlight the intricate sleep challenges faced by blind athletes, informing strategies to optimize recovery and performance.<\/jats:p>","DOI":"10.3390\/clockssleep7020020","type":"journal-article","created":{"date-parts":[[2025,4,15]],"date-time":"2025-04-15T10:49:54Z","timestamp":1744714194000},"page":"20","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["The Sleep\u2013Wake Cycle Pattern of a Blind Trail Ultramarathon Runner and His Guide: The World\u2019s First Case"],"prefix":"10.3390","volume":"7","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-3620-6751","authenticated-orcid":false,"given":"Larissa Quint\u00e3o","family":"Guilherme","sequence":"first","affiliation":[{"name":"Department of Physical Education, Federal University of Vi\u00e7osa (UFV), Vi\u00e7osa 36570-900, Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0007-1080-4087","authenticated-orcid":false,"given":"Julia Pagotto","family":"Matos","sequence":"additional","affiliation":[{"name":"Department of Physical Education, Federal University of Vi\u00e7osa (UFV), Vi\u00e7osa 36570-900, Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2919-2806","authenticated-orcid":false,"given":"Ana Claudia Pelissari","family":"Kravchychyn","sequence":"additional","affiliation":[{"name":"Department of Nutrition, Federal University of Vi\u00e7osa (UFV), Vi\u00e7osa 36570-900, Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3896-2208","authenticated-orcid":false,"given":"Marco Tulio","family":"De Mello","sequence":"additional","affiliation":[{"name":"Department of Sports, Federal University of Minas Gerais (UFMG), Belo Horizonte 31270-901, Brazil"},{"name":"Faculty of Health Sciences, Universidad Aut\u00f3noma de Chile, Providencia 7500912, Chile"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4327-9190","authenticated-orcid":false,"given":"Paulo Roberto","family":"dos Santos Amorim","sequence":"additional","affiliation":[{"name":"Department of Physical Education, Federal University of Vi\u00e7osa (UFV), Vi\u00e7osa 36570-900, Brazil"},{"name":"Department of Nutrition, Federal University of Vi\u00e7osa (UFV), Vi\u00e7osa 36570-900, Brazil"},{"name":"Department of Sports, Federal University of Minas Gerais (UFMG), Belo Horizonte 31270-901, Brazil"},{"name":"Research Center on Motor Activities (CRAM), University of Catania, 95124 Catania, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0525-5371","authenticated-orcid":false,"given":"Helton","family":"de S\u00e1 Souza","sequence":"additional","affiliation":[{"name":"Department of Physical Education, Federal University of Vi\u00e7osa (UFV), Vi\u00e7osa 36570-900, Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2025,4,15]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"2193","DOI":"10.1080\/17430437.2021.1898590","article-title":"Enablers and barriers in ultra-running: A comparison of male and female ultra-runners","volume":"25","author":"Valentin","year":"2021","journal-title":"Sport Soc."},{"key":"ref_2","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."},{"key":"ref_3","doi-asserted-by":"crossref","unstructured":"Knechtle, B., and Nikolaidis, P.T. (2018). Physiology and Pathophysiology in Ultra-Marathon Running. Front. Physiol., 9.","DOI":"10.3389\/fphys.2018.00634"},{"key":"ref_4","doi-asserted-by":"crossref","unstructured":"Hoppel, F., Calabria, E., Pesta, D., Kantner-Rumplmair, W., Gnaiger, E., and Burtscher, M. (2019). Physiological and pathophysiological responses to ultramarathon running in non-elite runners. Front. Physiol., 10.","DOI":"10.3389\/fphys.2019.01300"},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"441","DOI":"10.5935\/1984-0063.20220076","article-title":"Sleep and nutritional profile of endurance and ultra-endurance running athletes","volume":"15","author":"Daniel","year":"2022","journal-title":"Sleep Sci."},{"key":"ref_6","doi-asserted-by":"crossref","unstructured":"Belinch\u00f3n-Demiguel, P., Ruisoto, P., Knechtle, B., Nikolaidis, P.T., Herrera-Tapias, B., and Clemente-Su\u00e1rez, V.J. (2021). Predictors of Athlete\u2019s Performance in Ultra-Endurance Mountain Races. Int. J. Environ. Res. Public Health, 18.","DOI":"10.3390\/ijerph18030956"},{"key":"ref_7","doi-asserted-by":"crossref","unstructured":"Lecina, M., Castellar-Ot\u00edn, C., L\u00f3pez-Laval, I., P\u00e1ez, L.C., and Pradas, F. (2022). Acute Kidney Injury and Hyponatremia in Ultra-Trail Racing: A Systematic Review. Medicina, 58.","DOI":"10.3390\/medicina58050569"},{"key":"ref_8","doi-asserted-by":"crossref","unstructured":"Martin, T., Arnal, P.J., Hoffman, M.D., and Millet, G.Y. (2018). Sleep habits and strategies of ultramarathon runners. PLoS ONE, 13.","DOI":"10.1371\/journal.pone.0194705"},{"key":"ref_9","doi-asserted-by":"crossref","unstructured":"Driller, M.W., Dunican, I.C., Omond, S.E.T., Boukhris, O., Stevenson, S., Lambing, K., and Bender, A.M. (2023). Pyjamas, Polysomnography and Professional Athletes: The Role of Sleep Tracking Technology in Sport. Sports, 11.","DOI":"10.3390\/sports11010014"},{"key":"ref_10","doi-asserted-by":"crossref","unstructured":"Nikolaidis, P.T., Weiss, K., Knechtle, B., and Trakada, G. (2023). Sleep in marathon and ultramarathon runners: A brief narrative review. Front. Neurol., 14.","DOI":"10.3389\/fneur.2023.1217788"},{"key":"ref_11","doi-asserted-by":"crossref","unstructured":"Warman, G.R., Pawley, M.D.M., Bolton, C., Cheeseman, J.F., Fernando, A.T., Arendt, J., and Wirz-Justice, A. (2011). Circadian-related sleep disorders and sleep medication use in the New Zealand blind population: An observational prevalence survey. PLoS ONE, 6.","DOI":"10.1037\/t28037-000"},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"65","DOI":"10.1007\/s11910-018-0876-9","article-title":"Circadian Rhythm Disturbances in the Blind","volume":"18","author":"Hartley","year":"2018","journal-title":"Curr. Neurol. Neurosci. Rep."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"1659","DOI":"10.5664\/jcsm.6354","article-title":"A Nationwide Cross-Sectional Survey of Sleep-Related Problems in Japanese Visually Impaired Patients: Prevalence and Association with Health-Related Quality of Life","volume":"12","author":"Tamura","year":"2016","journal-title":"J. Clin. Sleep Med."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"111","DOI":"10.4274\/tjo.galenos.2022.59296","article-title":"The Effect of Blindness on Biological Rhythms and the Consequences of Circadian Rhythm Disorder","volume":"53","author":"Atan","year":"2023","journal-title":"Turk. J. Ophthalmol."},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"175","DOI":"10.1016\/j.sleep.2020.11.011","article-title":"Prevalence and risk factors of sleep disorders in visually impaired athletes","volume":"79","author":"Monma","year":"2020","journal-title":"Sleep Med."},{"key":"ref_16","doi-asserted-by":"crossref","unstructured":"Salva, M.A.Q., Hartley, S., L\u00e9ger, D., and Dauvilliers, Y.A. (2017). Non-24-Hour Sleep-Wake Rhythm Disorder in the Totally Blind: Diagnosis and Management. Front. Neurol., 8.","DOI":"10.3389\/fneur.2017.00686"},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"850","DOI":"10.1080\/17461391.2015.1120781","article-title":"Prevalence of poor sleep quality, sleepiness and obstructive sleep apnoea risk factors in athletes","volume":"16","author":"Swinbourne","year":"2015","journal-title":"Eur. J. Sport Sci."},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"78","DOI":"10.1111\/jsr.12509","article-title":"Self-reported sleep quantity, quality and sleep hygiene in elite athletes","volume":"27","author":"Knufinke","year":"2017","journal-title":"J. Sleep Res."},{"key":"ref_19","first-page":"25","article-title":"Earlier shift in race pacing can predict future performance during a single-effort ultramarathon under sleep deprivation","volume":"13","author":"Brager","year":"2020","journal-title":"Sleep Sci."},{"key":"ref_20","doi-asserted-by":"crossref","unstructured":"Bianchi, D., Miller, D.J., and Lastella, M. (2022). Sleep-Wake Behaviour of 200-Mile Ultra-Marathon Competitors: A Case Study. Int. J. Environ. Res. Public Health, 19.","DOI":"10.3390\/ijerph19053006"},{"key":"ref_21","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"},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"40","DOI":"10.1016\/j.sleh.2014.12.010","article-title":"National Sleep Foundation\u2019s sleep time duration recommendations: Methodology and results summary","volume":"1","author":"Hirshkowitz","year":"2015","journal-title":"Sleep Health"},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"e106","DOI":"10.3928\/19382359-20170221-01","article-title":"The Value of Sleep on Athletic Performance, Injury, and Recovery in the Young Athlete","volume":"46","author":"Copenhaver","year":"2017","journal-title":"Pediatr. Ann."},{"key":"ref_24","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":"2020","journal-title":"Br. J. Sports Med."},{"key":"ref_25","first-page":"1159","article-title":"Sleep disruption considerations for Paralympic athletes competing at Tokyo 2020","volume":"61","author":"Roberts","year":"2021","journal-title":"J. Sports Med. Phys. Fit."},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"203","DOI":"10.1123\/jsr.2021-0407","article-title":"The Sleep Parameters of Paralympic Athletes: Characteristics and Assessment Instruments","volume":"32","author":"Grade","year":"2023","journal-title":"J. Sport Rehabilit."},{"key":"ref_27","doi-asserted-by":"crossref","unstructured":"Rosa, J.P.P., Silva, A., de Lira, C.A.B., and de Mello, M.T. (2024). The Potential Impact of Heat on Athletes\u2019 Sleep at the Paris 2024 Olympics and Paralympics Games. Sleep Sci.","DOI":"10.1055\/s-0044-1791236"},{"key":"ref_28","doi-asserted-by":"crossref","unstructured":"Benchetrit, S., Badariotti, J.I., Corbett, J., and Costello, J.T. (2024). The effects of sleep deprivation and extreme exertion on cognitive performance at the world-record breaking Suffolk Back Yard Ultra-marathon. PLoS ONE, 19.","DOI":"10.1371\/journal.pone.0299475"},{"key":"ref_29","doi-asserted-by":"crossref","first-page":"41","DOI":"10.1016\/j.jsmc.2019.11.005","article-title":"Sleep and Athletic Performance: Impacts on Physical Performance, Mental Performance, Injury Risk and Recovery, and Mental Health","volume":"15","author":"Charest","year":"2020","journal-title":"Sleep Med. Clin."},{"key":"ref_30","doi-asserted-by":"crossref","first-page":"225","DOI":"10.4103\/cjp.cjp_57_21","article-title":"Visual hallucinations in 246-km mountain ultra-marathoners: An observational study","volume":"64","author":"Huang","year":"2021","journal-title":"Chin. J. Physiol."},{"key":"ref_31","doi-asserted-by":"crossref","unstructured":"Stuldreher, I.V., Maasland, E., Bottenheft, C., van Erp, J.B.F., and Brouwer, A.M. (2023). Physiological synchrony in electrodermal activity predicts decreased vigilant attention induced by sleep deprivation. Front. Neuroergon., 4.","DOI":"10.3389\/fnrgo.2023.1199347"},{"key":"ref_32","doi-asserted-by":"crossref","first-page":"909","DOI":"10.1249\/MSS.0000000000002207","article-title":"Sleep Deprivation: Cytokine and Neuroendocrine Effects on Perception of Effort","volume":"52","author":"Cullen","year":"2020","journal-title":"Med. Sci. Sports Exerc."},{"key":"ref_33","doi-asserted-by":"crossref","first-page":"318","DOI":"10.3109\/07420520903502226","article-title":"Subjective perceptions of the effects of sustained performance under sleep-deprivation conditions","volume":"27","author":"Bradley","year":"2010","journal-title":"Chrono. Int."},{"key":"ref_34","doi-asserted-by":"crossref","first-page":"113165","DOI":"10.1016\/j.physbeh.2020.113165","article-title":"Partial sleep deprivation affects endurance performance and psychophysiological responses during 12-minute self-paced running exercise","volume":"227","author":"Souissi","year":"2020","journal-title":"Physiol. Behav."},{"key":"ref_35","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."},{"key":"ref_36","doi-asserted-by":"crossref","first-page":"935","DOI":"10.2147\/NSS.S467531","article-title":"Effects of Acute Sleep Deprivation on Sporting Performance in Athletes: A Comprehensive Systematic Review and Meta-Analysis","volume":"16","author":"Gong","year":"2024","journal-title":"Nat. Sci. Sleep"},{"key":"ref_37","doi-asserted-by":"crossref","first-page":"212","DOI":"10.1123\/ijspp.2023-0267","article-title":"Addressing Circadian Disruptions in Visually Impaired Paralympic Athletes","volume":"19","author":"Anderson","year":"2024","journal-title":"Int. J. Sports Physiol. Perform."},{"key":"ref_38","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":"Beaven","year":"2018","journal-title":"Nat. Sci. Sleep"},{"key":"ref_39","doi-asserted-by":"crossref","first-page":"301","DOI":"10.31887\/DCNS.2007.9.3\/slockley","article-title":"Visual impairment and circadian rhythm disorders","volume":"9","author":"Lockley","year":"2007","journal-title":"Dialog. Clin. Neurosci."},{"key":"ref_40","doi-asserted-by":"crossref","first-page":"58","DOI":"10.1186\/s40798-023-00599-z","article-title":"The Impact of Sleep Interventions on Athletic Performance: A Systematic Review","volume":"9","author":"Cunha","year":"2023","journal-title":"Sports Med. Open"},{"key":"ref_41","doi-asserted-by":"crossref","first-page":"24","DOI":"10.1016\/j.ptsp.2022.06.001","article-title":"Sleep in Paralympic athletes and its relationship with injuries and illnesses","volume":"56","author":"Silva","year":"2022","journal-title":"Phys. Ther. Sport"},{"key":"ref_42","first-page":"97","article-title":"A self-assessment questionnaire to determine morningness-eveningness in human circadian rhythms","volume":"4","author":"Horne","year":"1976","journal-title":"Int. J. Chronobiol."},{"key":"ref_43","doi-asserted-by":"crossref","first-page":"540","DOI":"10.1093\/sleep\/14.6.540","article-title":"A New Method for Measuring Daytime Sleepiness: The Epworth Sleepiness Scale","volume":"14","author":"Johns","year":"1991","journal-title":"Sleep"},{"key":"ref_44","doi-asserted-by":"crossref","first-page":"877","DOI":"10.1590\/S1806-37132009000900009","article-title":"Valida\u00e7\u00e3o da escala de sonol\u00eancia de Epworth em portugu\u00eas para uso no Brasil","volume":"35","author":"Bertolazi","year":"2009","journal-title":"J. Bras. Pneumol."},{"key":"ref_45","unstructured":"Laura de Siqueira, C. (2025, January 07). Adapta\u00e7\u00e3o e Valida\u00e7\u00e3o do \u00cdndice de Gravidade de Ins\u00e2nia (IGI): Caracteriza\u00e7\u00e3o Populacional, Valores Normativos e Aspectos Associados. Universidade Federal de S\u00e3o Paulo (UNIFESP). Available online: http:\/\/repositorio.unifesp.br\/handle\/11600\/23193."},{"key":"ref_46","doi-asserted-by":"crossref","first-page":"70","DOI":"10.1016\/j.sleep.2010.04.020","article-title":"Validation of the Brazilian Portuguese Version of the Pittsburgh Sleep Quality Index","volume":"12","author":"Bertolazi","year":"2011","journal-title":"Sleep Med."},{"key":"ref_47","doi-asserted-by":"crossref","first-page":"e000475","DOI":"10.1136\/bmjsem-2018-000475","article-title":"Which parameters to use for sleep quality monitoring in team sport athletes? A systematic review and meta-analysis","volume":"5","author":"Claudino","year":"2019","journal-title":"BMJ Open Sport Exerc. Med."},{"key":"ref_48","doi-asserted-by":"crossref","first-page":"158","DOI":"10.1016\/j.slsci.2014.09.013","article-title":"Nonparametric methods in actigraphy: An update","volume":"7","author":"Cavalcanti","year":"2014","journal-title":"Sleep Sci."},{"key":"ref_49","doi-asserted-by":"crossref","unstructured":"Cornelissen, G. (2014). Cosinor-based rhythmometry. Theor. Biol. Med. Model., 11.","DOI":"10.1186\/1742-4682-11-16"},{"key":"ref_50","first-page":"267","article-title":"Sleep quality monitoring in individual sports athletes: Parameters and definitions by systematic review","volume":"13","author":"Simim","year":"2020","journal-title":"Sleep Sci."},{"key":"ref_51","doi-asserted-by":"crossref","first-page":"350","DOI":"10.1093\/annweh\/wxaa007","article-title":"Actigraphy-Based Assessment of Sleep Parameters","volume":"64","author":"Fekedulegn","year":"2020","journal-title":"Ann. Work. Expo. Health"},{"key":"ref_52","unstructured":"Greene, W. (2018). Econometric Analysis, Pearson Education Limited. [8th ed.]."},{"key":"ref_53","doi-asserted-by":"crossref","unstructured":"Jebb, A.T., Tay, L., Wang, W., and Huang, Q. (2015). Time series analysis for psychological research: Examining and forecasting change. Front. Psychol., 6.","DOI":"10.3389\/fpsyg.2015.00727"}],"container-title":["Clocks &amp; Sleep"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/2624-5175\/7\/2\/20\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,9]],"date-time":"2025-10-09T17:15:08Z","timestamp":1760030108000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/2624-5175\/7\/2\/20"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2025,4,15]]},"references-count":53,"journal-issue":{"issue":"2","published-online":{"date-parts":[[2025,6]]}},"alternative-id":["clockssleep7020020"],"URL":"https:\/\/doi.org\/10.3390\/clockssleep7020020","relation":{},"ISSN":["2624-5175"],"issn-type":[{"value":"2624-5175","type":"electronic"}],"subject":[],"published":{"date-parts":[[2025,4,15]]}}}