Relationship of Morning Cortisol to Circadian Phase and Rising Time in Young Adults with Delayed Sleep Times
Author(s) -
Mark S. Rea,
Mariana G. Figueiro,
Katherine M. Sharkey,
Mary A. Carskadon
Publication year - 2012
Publication title -
international journal of endocrinology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.875
H-Index - 60
eISSN - 1687-8345
pISSN - 1687-8337
DOI - 10.1155/2012/749460
Subject(s) - circadian rhythm , morning , melatonin , medicine , cortisol awakening response , delayed sleep phase , free running sleep , endocrinology , audiology , circadian clock , hydrocortisone , psychiatry , insomnia , sleep disorder , light effects on circadian rhythm
The present study was aimed at further elucidating the relationship between circadian phase, rising time, and the morning cortisol awakening response (CAR). The results presented here are a secondary analysis of experimental data obtained from a study of advanced sleep-wake schedules and light exposures on circadian phase advances measured by dim-light melatonin onset (DLMO). The present results demonstrate that morning CAR is strongly related to rising time and more weakly related to DLMO phase.
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