• Biological psychology · Mar 2007

    Poor sleep the night before an experimental stress task is associated with reduced cortisol reactivity in healthy women.

    • Caroline E Wright, Heiddis B Valdimarsdottir, Joel Erblich, and Dana H Bovbjerg.
    • Biobehavioral Medicine Program, Department of Oncological Sciences, Mount Sinai School of Medicine, Box 1130, 1425 Madison Avenue, New York, NY 10029, USA. caroline.wright@mssm.edu
    • Biol Psychol. 2007 Mar 1; 74 (3): 319-27.

    AbstractSleep disruption is a growing problem that may have serious health effects. As stress-induced increases in cortisol are thought to be a key adaptive process it is important to examine how this response is affected by sleep. The current study investigated the association of four sleep parameters (objective/subjectively measured sleep quality and quantity) and subsequent salivary cortisol reactivity (maximal change from baseline) to an experimental stressor in 53 healthy women. Objective actigraphy monitoring and self-report diaries were used to assess sleep. Results revealed that individuals with lower objective sleep quality (wake percentage during sleep) had a blunted response to the experimental stressor. No associations were found between cortisol reactivity and actigraphy-derived sleep quantity, or either of the self-reported sleep variables. Results are discussed with regard to the possible adverse health effects that may result from poor sleep quality and a blunted cortisol response to stress.

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