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Recovery in airplanes: sleep, and oxygen saturation

Elmenhorst, E.-M. und Rooney, D. und Pennig, S. und Wittkowski, M. und Vejvoda, M. und Wenzel, J. (2012) Recovery in airplanes: sleep, and oxygen saturation. Sleep Kongress, 09.-13.06.2012, Boston, USA.

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Kurzfassung

Introduction: With increasing number and duration of long-haul flights the topic of crews’ on-board sleep and recovery gets progressively more important. At travelling altitude sleep takes place under hypobaric conditions corresponding to an altitude of 8000 ft. Methods: We investigated 24 healthy subjects (12 female, average age 27 years ± 4 SD) sleeping in a pressure chamber furnished as crew-rest-compartment. The flight simulation was realistic concerning the atmospheric conditions, the in-flight noise, and the 4h time in bed. Sleep-EEG, blood oxygen saturation (SpO2), and subjective sleep quality were recorded. Results were compared to a control group of 23 healthy subjects (9 female, average age 26 years ± 6 SD) that spent 4h time in bed in private rooms of the DLR-sleep laboratory under normobaric, silent conditions. Results: The recuperative value of sleep (to date subgroup of n=16) was reduced in hypobaric conditions since deep sleep (p<0.05) and REM sleep (p<0.01) were reduced whereas the light sleep phases (N1 p<0.05, N2 p<0.01) were increased. Sleep period time (SPT) and sleep efficiency did not differ between groups. The objective measures were emphasized by the subjective ratings (calmness of sleep: p<0.001; sleep depth: p<0.05). “In-flight”, subjects spent 83% (± 5%) of SPT in a state of hypobaric hypoxia (<90% SpO2), 4% of SPT even below 85% SpO2. The mean SpO2 level in-flight was 88% (± 1 SD) with a mean minimum of 81% (± 3 SD) while the control group had a mean SpO2 level of 96% (± 1 SD) (p<0.0001). Conclusion: Hypobaric hypoxia reduced the recuperative value of sleep. Young and healthy subjects were clearly affected. Older flight crews or diseased passengers might suffer from stronger effects while sleeping on board.

Dokumentart:Konferenzbeitrag (Poster)
Titel:Recovery in airplanes: sleep, and oxygen saturation
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID
Elmenhorst, E.-M.eva-maria.elmenhorst@dlr.deNICHT SPEZIFIZIERT
Rooney, D.daniel.rooney@dlr.deNICHT SPEZIFIZIERT
Pennig, S.sibylle.pennig@dlr.deNICHT SPEZIFIZIERT
Wittkowski, M.martin.wittkowski@dlr.deNICHT SPEZIFIZIERT
Vejvoda, M.martin.vejvoda@dlr.deNICHT SPEZIFIZIERT
Wenzel, J.juergen.wenzel@dlr.deNICHT SPEZIFIZIERT
Datum:2012
In Open Access:Nein
In SCOPUS:Nein
In ISI Web of Science:Nein
Status:veröffentlicht
Stichwörter:sleep, recovery, oxygen saturation, airplane
Veranstaltungstitel:Sleep Kongress
Veranstaltungsort:Boston, USA
Veranstaltungsart:internationale Konferenz
Veranstaltungsdatum:09.-13.06.2012
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Luftfahrt
HGF - Programmthema:ATM und Flugbetrieb (alt)
DLR - Schwerpunkt:Luftfahrt
DLR - Forschungsgebiet:L AO - Luftverkehrsmanagement und Flugbetrieb
DLR - Teilgebiet (Projekt, Vorhaben):L - Faktor Mensch und Sicherheit in der Luftfahrt (alt)
Standort: Köln-Porz
Institute & Einrichtungen:Institut für Luft- und Raumfahrtmedizin > Flugphysiologie
Hinterlegt von: Sender, Alina
Hinterlegt am:09 Aug 2012 08:37
Letzte Änderung:09 Aug 2012 08:37

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