ArticleScientific reports2019
Sleep, napping and alertness during an overwintering mission at Belgrano II Argentine Antarctic station.
Article in Scientific reports, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
8 citing papers in PubMed, 23 citations in OpenAlex.
- Autonomic regulation across sleep and wake during an Antarctic overwintering.Scientific reports · 2026Observational
- An integrated multi-omics analysis identifies novel regulators of circadian rhythm and sleep disruptions under unique light environment in Antarctica.Molecular psychiatry · 2025Article
- Vagal predominance correlates with mood state changes of winter-over expeditioners during prolonged Antarctic residence.PloS one · 2024Article
- Chronotype delay and sleep disturbances shaped by the Antarctic polar night.Scientific reports · 2023Article
- How Sleep Research in Extreme Environments Can Inform the Military: Advocating for a Transactional Model of Sleep Adaptation.Current psychiatry reports · 2023Review
- The role of circadian phase in sleep and performance during Antarctic winter expeditions.Journal of pineal research · 2022Article
- Mood and Sleep Status and Mental Disorders During Prolonged Winter-Over Residence in Two Korean Antarctic Stations.Nature and science of sleep · 2022Article
- Sleep in Isolated, Confined, and Extreme (ICE): A Review on the Different Factors Affecting Human Sleep in ICE.Frontiers in neuroscience · 2020Review
Corrections and comments
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Authors and funding
13 authors at 5 institutions in 3 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
During Antarctic isolation personnel are exposed to extreme photoperiods. A frequent observation is a sleep onset phase delay during winter. It is not known if, as a result, daytime sleeping in the form of naps increases. We sought to assess sleep patterns - with focus on daytime sleeping - and alertness in a Latin American crew overwintering in Argentine Antarctic station Belgrano II. Measurements were collected in 13 males during March, May, July, September and November, and included actigraphy and psychomotor vigilance tasks. Sleep duration significantly decreased during winter. A total of eight participants took at least one weekly nap across all measurement points. During winter, the nap onset was delayed, its duration increased and its efficiency improved. We observed a significant effect of seasonality in the association of evening alertness with sleep onset. Our results replicate previous findings regarding sleep during overwintering in Antarctica, adding the description of the role of napping and the report of a possible modulatory effect of seasonality in the relation between sleep and alertness. Napping should be considered as an important factor in the scheduling of activities of multicultural crews that participate in Antarctica.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.