{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,23]],"date-time":"2025-10-23T16:09:50Z","timestamp":1761235790190,"version":"build-2065373602"},"reference-count":23,"publisher":"Human Kinetics","issue":"10","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2025]]},"abstract":"<jats:p>\n                    <jats:italic>\n                      <jats:bold>Purpose:<\/jats:bold>\n                    <\/jats:italic>\n                    A sport-related concussion (SRC) can cause sleep disturbances within 72\u00a0hours of injury. However, most research focuses on sleep after\u2009&gt;72\u00a0hours, with limited attention to acute sleep responses, despite their potential impact on SRC recovery.\n                    <jats:italic>\n                      <jats:bold>Methods:<\/jats:bold>\n                    <\/jats:italic>\n                    This case study examines a 22-year-old professional rugby union player who sustained an SRC during an away match. Sleep architecture (sleep stages: N1, N2, N3, and rapid eye movement [REM]\u00a0sleep) and physiological responses during sleep over 4 nights were analyzed\u2014sleep before injury (PRE), the 2 nights immediately following injury (INJ and INJ\u2009+\u20091), and after recovery from injury (POST)\u2014using home-based polysomnography. Return transmeridian travel was undertaken on INJ\u2009+\u20091.\n                    <jats:italic>\n                      <jats:bold>Results:<\/jats:bold>\n                    <\/jats:italic>\n                    The player took 15\u00a0minutes to fall asleep and slept &lt;6\u00a0hours on INJ, with reductions in N3 (19% vs 22%\u201337%) and REM sleep (18% vs 20%\u201332%) compared with all other nights. Despite increased N3 and REM sleep on INJ\u2009+\u20091, sleep disturbances persisted (23\u00a0min to fall asleep, 69\u00a0min of wake after sleep onset, 40 awakenings, and sleep efficiency below 85%). Compared with sleep on PRE and POST, mean oxygen saturation and heart-rate variability were lower, mean heart rate was elevated, and respiratory events during sleep were greater on INJ and INJ\u2009+\u20091.\n                    <jats:italic>\n                      <jats:bold>Conclusion:<\/jats:bold>\n                    <\/jats:italic>\n                    Acute responses after the SRC included sleep disturbances and elevated sympathetic activity (during sleep). The player had difficulty achieving deep, restorative sleep the first night following the SRC, aligning with the non-restorative-sleep complaints commonly reported by concussed athletes on the night(s) immediately following injury.\n                  <\/jats:p>","DOI":"10.1123\/ijspp.2025-0091","type":"journal-article","created":{"date-parts":[[2025,8,23]],"date-time":"2025-08-23T19:05:59Z","timestamp":1755975959000},"page":"1452-1457","source":"Crossref","is-referenced-by-count":0,"title":["Sleep Architecture Immediately After a Sport-Related Concussion Sustained During a Professional Rugby Union Match: A Retrospective Case Study"],"prefix":"10.1123","volume":"20","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-5541-6431","authenticated-orcid":true,"given":"Kanon","family":"Uchiyama","sequence":"first","affiliation":[{"name":"School of Human Sciences (Exercise and Sport Science), University of Western Australia, Perth, WA, Australia"},{"name":"Western Force, Perth, WA, Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3895-0015","authenticated-orcid":true,"given":"Peter","family":"Peeling","sequence":"additional","affiliation":[{"name":"School of Human Sciences (Exercise and Sport Science), University of Western Australia, Perth, WA, Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1047-3878","authenticated-orcid":true,"given":"Shona L.","family":"Halson","sequence":"additional","affiliation":[{"name":"School of Behavioural and Health Sciences, McAuley at Banyo, Australian Catholic University, Brisbane, QLD, Australia"},{"name":"Sports Performance, Recovery, Injury and New Technologies Research Centre (SPRINT), Faculty of Health Sciences, Australian Catholic University, Brisbane, QLD, Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7196-3731","authenticated-orcid":true,"given":"Machar","family":"Reid","sequence":"additional","affiliation":[{"name":"School of Human Sciences (Exercise and Sport Science), University of Western Australia, Perth, WA, Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9768-6736","authenticated-orcid":true,"given":"Karen","family":"Wallman","sequence":"additional","affiliation":[{"name":"School of Human Sciences (Exercise and Sport Science), University of Western Australia, Perth, WA, Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3950-6079","authenticated-orcid":true,"given":"Jennifer","family":"Walsh","sequence":"additional","affiliation":[{"name":"Centre for Sleep Science, School of Human Sciences, University of Western Australia, Crawley, WA, Australia"},{"name":"Department of Pulmonary Physiology & Sleep Medicine, West Australian Sleep Disorders Research Institute, Sir Charles Gairdner Hospital, Nedlands, WA, Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Simon","family":"Thomas","sequence":"additional","affiliation":[{"name":"Western Force, Perth, WA, Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4101-1649","authenticated-orcid":true,"given":"Olivier","family":"Girard","sequence":"additional","affiliation":[{"name":"School of Human Sciences (Exercise and Sport Science), University of Western Australia, Perth, WA, Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"100","reference":[{"issue":"11","key":"r1","series-title":"Br J Sports Med","doi-asserted-by":"publisher","DOI":"10.1136\/bjsports-2023-106898","article-title":"Consensus statement on concussion in sport: the 6th International Conference on Concussion in Sport\u2013Amsterdam, October 2022","volume":"57","author":"Patricios JS","year":"2023","unstructured":"Patricios JS, Schneider KJ, Dvorak J, et\u00a0al. 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