Sleep Quality Changes during Overwintering at the German Antarctic Stations Neumayer II and III : The Gender Factor
Purpose Antarctic residence holds many challenges to human physiology, like increased psycho-social tension and altered circadian rhythm, known to influence sleep. We assessed changes in sleep patterns during 13 months of overwintering at the German Stations Neumayer II and III from 2008 to 2014, wi...
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ftdatacite:10.17169/refubium-18920 2023-05-15T13:50:13+02:00 Sleep Quality Changes during Overwintering at the German Antarctic Stations Neumayer II and III : The Gender Factor Steinach, Mathias Kohlberg, Eberhard Maggioni, Martina Anna Mendt, Stefan Opatz, Oliver Stahn, Alexander Gunga, Hanns-Christian 2016 https://dx.doi.org/10.17169/refubium-18920 https://refubium.fu-berlin.de/handle/fub188/14730 unknown Charité - Universitätsmedizin Berlin http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0150099 https://dx.doi.org/10.1371/journal.pone.0150099 http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0150099 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 CC-BY 600 Technik, Medizin, angewandte Wissenschaften610 Medizin und Gesundheit Text article-journal Wissenschaftlicher Artikel ScholarlyArticle 2016 ftdatacite https://doi.org/10.17169/refubium-18920 https://doi.org/10.1371/journal.pone.0150099 2021-11-05T12:55:41Z Purpose Antarctic residence holds many challenges to human physiology, like increased psycho-social tension and altered circadian rhythm, known to influence sleep. We assessed changes in sleep patterns during 13 months of overwintering at the German Stations Neumayer II and III from 2008 to 2014, with focus on gender, as many previous investigations were inconclusive regarding gender-based differences or had only included men. Materials & Methods Time in bed, sleep time, sleep efficiency, number of arousals, sleep latency, sleep onset, sleep offset, and physical activity level were determined twice per month during seven overwintering campaigns of n = 54 participants (37 male, 17 female) using actimetry. Data were analyzed using polynomial regression and analysis of covariance for change over time with the covariates gender, inhabited station, overwintering season and influence of physical activity and local sunshine radiation. Results We found overall longer times in bed (p = 0.004) and sleep time (p = 0.014) for women. The covariate gender had a significant influence on time in bed (p<0.001), sleep time (p<0.001), number of arousals (p = 0.04), sleep latency (p = 0.04), and sleep onset (p<0.001). Women separately (p = 0.02), but not men (p = 0.165), showed a linear increase in number of arousals. Physical activity decreased over overwintering time for men (p = 0.003), but not for women (p = 0.174). The decline in local sunshine radiation led to a 48 minutes longer time in bed (p<0.001), 3.8% lower sleep efficiency (p<0.001), a delay of 32 minutes in sleep onset (p<0.001), a delay of 54 minutes in sleep offset (p<0.001), and 11% less daily energy expenditure (p<0.001), for all participants in reaction to the Antarctic winter’s darkness-phase. Conclusions Overwinterings at the Stations Neumayer II and III are associated with significant changes in sleep patterns, with dependences from overwintering time and local sunshine radiation. Gender appears to be an influence, as women showed a declining sleep quality, despite that their physical activity remained unchanged, suggesting other causes such as a higher susceptibility to psycho-social stress and changes in environmental circadian rhythm during long-term isolation in Antarctica. Text Antarc* Antarctic Antarctica DataCite Metadata Store (German National Library of Science and Technology) Antarctic The Antarctic Neumayer |
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DataCite Metadata Store (German National Library of Science and Technology) |
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topic |
600 Technik, Medizin, angewandte Wissenschaften610 Medizin und Gesundheit |
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600 Technik, Medizin, angewandte Wissenschaften610 Medizin und Gesundheit Steinach, Mathias Kohlberg, Eberhard Maggioni, Martina Anna Mendt, Stefan Opatz, Oliver Stahn, Alexander Gunga, Hanns-Christian Sleep Quality Changes during Overwintering at the German Antarctic Stations Neumayer II and III : The Gender Factor |
topic_facet |
600 Technik, Medizin, angewandte Wissenschaften610 Medizin und Gesundheit |
description |
Purpose Antarctic residence holds many challenges to human physiology, like increased psycho-social tension and altered circadian rhythm, known to influence sleep. We assessed changes in sleep patterns during 13 months of overwintering at the German Stations Neumayer II and III from 2008 to 2014, with focus on gender, as many previous investigations were inconclusive regarding gender-based differences or had only included men. Materials & Methods Time in bed, sleep time, sleep efficiency, number of arousals, sleep latency, sleep onset, sleep offset, and physical activity level were determined twice per month during seven overwintering campaigns of n = 54 participants (37 male, 17 female) using actimetry. Data were analyzed using polynomial regression and analysis of covariance for change over time with the covariates gender, inhabited station, overwintering season and influence of physical activity and local sunshine radiation. Results We found overall longer times in bed (p = 0.004) and sleep time (p = 0.014) for women. The covariate gender had a significant influence on time in bed (p<0.001), sleep time (p<0.001), number of arousals (p = 0.04), sleep latency (p = 0.04), and sleep onset (p<0.001). Women separately (p = 0.02), but not men (p = 0.165), showed a linear increase in number of arousals. Physical activity decreased over overwintering time for men (p = 0.003), but not for women (p = 0.174). The decline in local sunshine radiation led to a 48 minutes longer time in bed (p<0.001), 3.8% lower sleep efficiency (p<0.001), a delay of 32 minutes in sleep onset (p<0.001), a delay of 54 minutes in sleep offset (p<0.001), and 11% less daily energy expenditure (p<0.001), for all participants in reaction to the Antarctic winter’s darkness-phase. Conclusions Overwinterings at the Stations Neumayer II and III are associated with significant changes in sleep patterns, with dependences from overwintering time and local sunshine radiation. Gender appears to be an influence, as women showed a declining sleep quality, despite that their physical activity remained unchanged, suggesting other causes such as a higher susceptibility to psycho-social stress and changes in environmental circadian rhythm during long-term isolation in Antarctica. |
format |
Text |
author |
Steinach, Mathias Kohlberg, Eberhard Maggioni, Martina Anna Mendt, Stefan Opatz, Oliver Stahn, Alexander Gunga, Hanns-Christian |
author_facet |
Steinach, Mathias Kohlberg, Eberhard Maggioni, Martina Anna Mendt, Stefan Opatz, Oliver Stahn, Alexander Gunga, Hanns-Christian |
author_sort |
Steinach, Mathias |
title |
Sleep Quality Changes during Overwintering at the German Antarctic Stations Neumayer II and III : The Gender Factor |
title_short |
Sleep Quality Changes during Overwintering at the German Antarctic Stations Neumayer II and III : The Gender Factor |
title_full |
Sleep Quality Changes during Overwintering at the German Antarctic Stations Neumayer II and III : The Gender Factor |
title_fullStr |
Sleep Quality Changes during Overwintering at the German Antarctic Stations Neumayer II and III : The Gender Factor |
title_full_unstemmed |
Sleep Quality Changes during Overwintering at the German Antarctic Stations Neumayer II and III : The Gender Factor |
title_sort |
sleep quality changes during overwintering at the german antarctic stations neumayer ii and iii : the gender factor |
publisher |
Charité - Universitätsmedizin Berlin |
publishDate |
2016 |
url |
https://dx.doi.org/10.17169/refubium-18920 https://refubium.fu-berlin.de/handle/fub188/14730 |
geographic |
Antarctic The Antarctic Neumayer |
geographic_facet |
Antarctic The Antarctic Neumayer |
genre |
Antarc* Antarctic Antarctica |
genre_facet |
Antarc* Antarctic Antarctica |
op_relation |
http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0150099 https://dx.doi.org/10.1371/journal.pone.0150099 http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0150099 |
op_rights |
Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.17169/refubium-18920 https://doi.org/10.1371/journal.pone.0150099 |
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1766253221875023872 |