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Título : Sleep, napping and alertness during an overwintering mission at Belgrano II Argentine Antarctic station
Autor : Folgueira, Agustín 
Simonelli, Guido 
Plano, Santiago Andrés 
Tortello, Camila 
Cuiuli, Juan Manuel 
Blanchard, Abel 
Patagua, Alejandro 
Brager, Allison J. 
Capaldi, Vicente F. 
Aubert, André E. 
Barbarito, Marta 
Golombek, Diego A. 
Vigo, Daniel Eduardo 
Fecha de publicación : 2019
Editorial : Nature Research
Cita : Folgueira A et al. Sleep, napping and alertness during an overwintering mission at Belgrano II Argentine Antarctic station [en línea]. Scientific Reports 2019;9. Disponible en:
Proyecto: Cronobiología del aislamiento antártico: la utilización de la Base Belgrano II como modelo de desincronización biológica y análogo espacial 
Resumen : 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.
Cobertura Espacial: Antártida Argentina
ISSN : 2045-2322 (online)
Disciplina: MEDICINA
DOI: 10.1038/s41598-019-46900-7
Derechos: Acceso abierto
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