Chronotype-dependent changes in sleep habits associated with dim light melatonin onset in the Antarctic summer
Dim light melatonin onset (DLMO) is the most reliable measure of human central circadian timing. Its modulation by light exposure and chronotype has been scarcely approached. We evaluated the impact of light changes on the interaction between melatonin, sleep, and chronotype in university students (...
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| Format: | article |
| Sprog: | engelsk |
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2019
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| Online adgang: | https://hdl.handle.net/20.500.12008/28624 |
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| _version_ | 1868890171623079936 |
|---|---|
| author | Silva Barbato, Ana Celia |
| author2 | Simón, Diego Pannunzio, Bruno Casaravilla, Cecilia Díaz, Álvaro Tassino, Bettina |
| author2_role | author author author author author |
| author_browse | Casaravilla, Cecilia Díaz, Álvaro Pannunzio, Bruno Silva Barbato, Ana Celia Simón, Diego Tassino, Bettina |
| author_facet | Silva Barbato, Ana Celia Simón, Diego Pannunzio, Bruno Casaravilla, Cecilia Díaz, Álvaro Tassino, Bettina |
| author_role | author |
| collection | COLIBRI |
| dc.contributor.none.fl_str_mv | Silva Barbato Ana Celia, Universidad de la República (Uruguay). Facultad de Ciencias. Instituto de Biología. Simón Diego, Universidad de la República (Uruguay). Facultad de Ciencias. Instituto de Biología Pannunzio Bruno, Universidad de la República (Uruguay). Facultad de Ciencias. Instituto de Biología Casaravilla Cecilia, Universidad de la República (Uruguay). Facultad de Ciencias. Instituto de Química Biológica Díaz Álvaro, Universidad de la República (Uruguay). Facultad de Ciencias. Instituto de Química Biológica Tassino Bettina, Universidad de la República (Uruguay). Facultad de Ciencias. Instituto de Biología. |
| dc.creator.none.fl_str_mv | Silva Barbato, Ana Celia Simón, Diego Pannunzio, Bruno Casaravilla, Cecilia Díaz, Álvaro Tassino, Bettina |
| dc.date.none.fl_str_mv | 2019 2021-07-21T14:58:48Z 2021-07-21T14:58:48Z |
| dc.format.none.fl_str_mv | 15 h. application/pdf |
| dc.identifier.none.fl_str_mv | Silva Barbato, A, Simón, D, Pannunzio, B, y otros "Chronotype-dependent changes in sleep habits associated with dim light melatonin onset in the Antarctic summer". Clocks & Sleep. [en línea] 2019, 1(3): 352-366. 15 h. DOI: 10.3390/clockssleep1030029 2624-5175 https://hdl.handle.net/20.500.12008/28624 10.3390/clockssleep1030029 |
| dc.language.none.fl_str_mv | en eng |
| dc.publisher.none.fl_str_mv | MDPI |
| dc.relation.none.fl_str_mv | Clocks & Sleep, 2019, 1(3): 352-366 |
| dc.rights.none.fl_str_mv | info:eu-repo/semantics/openAccess Licencia Creative Commons Atribución (CC - By 4.0) |
| dc.source.none.fl_str_mv | reponame:COLIBRI instname:Universidad de la República instacron:Universidad de la República |
| dc.subject.none.fl_str_mv | Antarctica DLMO MEQ Circadian preferences |
| dc.title.none.fl_str_mv | Chronotype-dependent changes in sleep habits associated with dim light melatonin onset in the Antarctic summer |
| dc.type.none.fl_str_mv | Artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
| description | Dim light melatonin onset (DLMO) is the most reliable measure of human central circadian timing. Its modulation by light exposure and chronotype has been scarcely approached. We evaluated the impact of light changes on the interaction between melatonin, sleep, and chronotype in university students (n = 12) between the Antarctic summer (10 days) and the autumn equinox in Montevideo, Uruguay (10 days). Circadian preferences were tested by validated questionnaires. A Morningness–Eveningness Questionnaire average value (47 ± 8.01) was used to separate late and early participants. Daylight exposure (measured by actimetry) was significantly higher in Antarctica versus Montevideo in both sensitive time windows (the morning phase-advancing and the evening phase-delaying). Melatonin was measured in hourly saliva samples (18–24 h) collected in dim light conditions (<30 lx) during the last night of each study period. Early and late participants were exposed to similar amounts of light in both sites and time windows, but only early participants were significantly more exposed during the late evening in Antarctica. Late participants advanced their DLMO with no changes in sleep onset time in Antarctica, while early participants delayed their DLMO and sleep onset time. This different susceptibility to respond to light may be explained by a subtle difference in evening light exposure between chronotypes. |
| eu_rights_str_mv | openAccess |
| format | article |
| id | anni_b4789b4b5957cc50a20fe2cf3a3bebc2 |
| identifier_str_mv | Silva Barbato, A, Simón, D, Pannunzio, B, y otros "Chronotype-dependent changes in sleep habits associated with dim light melatonin onset in the Antarctic summer". Clocks & Sleep. [en línea] 2019, 1(3): 352-366. 15 h. DOI: 10.3390/clockssleep1030029 2624-5175 10.3390/clockssleep1030029 |
| instacron_str | Universidad de la República |
| institution | Universidad de la República |
| instname_str | Universidad de la República |
| language | eng |
| language_invalid_str_mv | en |
| network_acronym_str | anni |
| network_name_str | oai-lr-anni |
| oai_identifier_str | oai:colibri.udelar.edu.uy:20.500.12008/28624 |
| publishDate | 2019 |
| publishDateSort | 2019 |
| publisher.none.fl_str_mv | MDPI |
| reponame_str | COLIBRI |
| repository.mail.fl_str_mv | |
| repository.name.fl_str_mv | |
| repository_id_str | |
| rights_invalid_str_mv | Licencia Creative Commons Atribución (CC - By 4.0) |
| spelling | Chronotype-dependent changes in sleep habits associated with dim light melatonin onset in the Antarctic summerSilva Barbato, Ana CeliaSimón, DiegoPannunzio, BrunoCasaravilla, CeciliaDíaz, ÁlvaroTassino, BettinaAntarcticaDLMOMEQCircadian preferencesDim light melatonin onset (DLMO) is the most reliable measure of human central circadian timing. Its modulation by light exposure and chronotype has been scarcely approached. We evaluated the impact of light changes on the interaction between melatonin, sleep, and chronotype in university students (n = 12) between the Antarctic summer (10 days) and the autumn equinox in Montevideo, Uruguay (10 days). Circadian preferences were tested by validated questionnaires. A Morningness–Eveningness Questionnaire average value (47 ± 8.01) was used to separate late and early participants. Daylight exposure (measured by actimetry) was significantly higher in Antarctica versus Montevideo in both sensitive time windows (the morning phase-advancing and the evening phase-delaying). Melatonin was measured in hourly saliva samples (18–24 h) collected in dim light conditions (<30 lx) during the last night of each study period. Early and late participants were exposed to similar amounts of light in both sites and time windows, but only early participants were significantly more exposed during the late evening in Antarctica. Late participants advanced their DLMO with no changes in sleep onset time in Antarctica, while early participants delayed their DLMO and sleep onset time. This different susceptibility to respond to light may be explained by a subtle difference in evening light exposure between chronotypes.MDPISilva Barbato Ana Celia, Universidad de la República (Uruguay). Facultad de Ciencias. Instituto de Biología.Simón Diego, Universidad de la República (Uruguay). Facultad de Ciencias. Instituto de BiologíaPannunzio Bruno, Universidad de la República (Uruguay). Facultad de Ciencias. Instituto de BiologíaCasaravilla Cecilia, Universidad de la República (Uruguay). Facultad de Ciencias. Instituto de Química BiológicaDíaz Álvaro, Universidad de la República (Uruguay). Facultad de Ciencias. Instituto de Química BiológicaTassino Bettina, Universidad de la República (Uruguay). Facultad de Ciencias. Instituto de Biología.2021-07-21T14:58:48Z2021-07-21T14:58:48Z2019Artículoinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersion15 h.application/pdfSilva Barbato, A, Simón, D, Pannunzio, B, y otros "Chronotype-dependent changes in sleep habits associated with dim light melatonin onset in the Antarctic summer". Clocks & Sleep. [en línea] 2019, 1(3): 352-366. 15 h. DOI: 10.3390/clockssleep10300292624-5175https://hdl.handle.net/20.500.12008/2862410.3390/clockssleep1030029reponame:COLIBRIinstname:Universidad de la Repúblicainstacron:Universidad de la RepúblicaenengClocks & Sleep, 2019, 1(3): 352-366Las obras depositadas en el Repositorio se rigen por la Ordenanza de los Derechos de la Propiedad Intelectual de la Universidad de la República.(Res. Nº 91 de C.D.C. de 8/III/1994 – D.O. 7/IV/1994) y por la Ordenanza del Repositorio Abierto de la Universidad de la República (Res. Nº 16 de C.D.C. de 07/10/2014)info:eu-repo/semantics/openAccessLicencia Creative Commons Atribución (CC - By 4.0)oai:colibri.udelar.edu.uy:20.500.12008/286242026-04-14T10:09:41Z |
| spellingShingle | Chronotype-dependent changes in sleep habits associated with dim light melatonin onset in the Antarctic summer Silva Barbato, Ana Celia Antarctica DLMO MEQ Circadian preferences |
| status_str | publishedVersion |
| title | Chronotype-dependent changes in sleep habits associated with dim light melatonin onset in the Antarctic summer |
| title_full | Chronotype-dependent changes in sleep habits associated with dim light melatonin onset in the Antarctic summer |
| title_fullStr | Chronotype-dependent changes in sleep habits associated with dim light melatonin onset in the Antarctic summer |
| title_full_unstemmed | Chronotype-dependent changes in sleep habits associated with dim light melatonin onset in the Antarctic summer |
| title_short | Chronotype-dependent changes in sleep habits associated with dim light melatonin onset in the Antarctic summer |
| title_sort | Chronotype-dependent changes in sleep habits associated with dim light melatonin onset in the Antarctic summer |
| topic | Antarctica DLMO MEQ Circadian preferences |
| url | https://hdl.handle.net/20.500.12008/28624 |