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J Health Psychol. 2017 Oct 1:1359105317738323. doi: 10.1177/1359105317738323. [Epub ahead of print]

The cortisol awakening response after sleep deprivation: Is the cortisol awakening response a "response" to awakening or a circadian process?

Author information

1
1 University of Pennsylvania, USA.
2
2 University of Michigan, USA.

Abstract

This study tested whether the cortisol awakening response is dependent on the transition from sleep to awakening, or alternatively, a circadian-driven process that is independent of awakening. A total of 40 participants were randomly assigned to either a total sleep deprivation or a sleep condition. Salivary cortisol was also assessed. Participants in the sleep condition demonstrated a traditional cortisol awakening response, whereas participants in the total sleep deprivation condition showed no increases in morning cortisol. These results are consistent with the notion that if circadian-driven processes are related to the cortisol awakening response, they may only be activated when awakening occurs or is anticipated.

KEYWORDS:

cortisol; health behavior; sleep; stress; students

PMID:
29076400
DOI:
10.1177/1359105317738323

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