{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,21]],"date-time":"2026-09-21T19:21:10Z","timestamp":1790018470459,"version":"4.0.1"},"reference-count":22,"publisher":"Aerospace Medical Association","issue":"9","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["aerosp med hum perform"],"published-print":{"date-parts":[[2023,9,1]]},"abstract":"<jats:p><jats:bold>BACKGROUND:<\/jats:bold> In military aviation, due to high-altitude flight operations, hypoxia training is mandatory and nowadays is mainly done as normobaric hypoxia training in flight simulators. During the last decade, scientific data has been published about delayed recovery after normobaric\n hypoxia, known as a \u201chypoxia hangover.\u201d Sopite syndrome is a symptom complex that develops as a result of exposure to real or apparent motion, and it is characterized by yawning, excessive drowsiness, lassitude, lethargy, mild depression, and a reduced ability to focus on an assigned\n task.<jats:bold>CASE REPORT:<\/jats:bold> In this study, we present the case of a 49-yr-old pilot who participated in normobaric hypoxia refreshment training in an F\/A-18C Hornet simulator and experienced delayed drowsiness, even 3\u2009h after the training.<jats:bold>DISCUSSION:<\/jats:bold> This case report demonstrates\n the danger of deep hypoxia. Hypoxia training instructions should include restrictions related to driving a car immediately after hypoxia training. In addition, hypoxia may lower the brain threshold for sopite syndrome.<jats:bold>Varis N, Leinonen A, Per\u00e4l\u00e4 J, Leino TK, Husa L, Sovelius\n R. <jats:italic>Delayed drowsiness after normobaric hypoxia training in an F\/A-18 Hornet simulator<\/jats:italic>. Aerosp Med Hum Perform. 2023; 94(9):715\u2013718.<\/jats:bold><\/jats:p>","DOI":"10.3357\/amhp.6238.2023","type":"journal-article","created":{"date-parts":[[2023,8,17]],"date-time":"2023-08-17T04:43:20Z","timestamp":1692247400000},"page":"715-718","source":"Crossref","is-referenced-by-count":1,"title":["Delayed Drowsiness After Normobaric Hypoxia Training in an F\/A-18 Hornet Simulator"],"prefix":"10.3357","volume":"94","author":[{"given":"Nikke","family":"Varis","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Antti","family":"Leinonen","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jesper","family":"Per\u00e4l\u00e4","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tuomo 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