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No effects of repeated forced wakings during three consecutive nights on morning cortisol awakening responses (CAR): A preliminary study
No changes in morning stress hormone levels after being forced to stay awake for three nights in a row: a preliminary study
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Abstract
A significant difference was found between night time cortisol responses to awakening and the morning cortisol awakening response (CAR).
- Cortisol levels did not rise significantly during the first half of the night after awakenings.
- Some reactivity in cortisol levels was observed during awakenings in the early morning hours.
- Pronounced cortisol awakening responses were noted in the morning before participants got out of bed.
- The morning CAR after disturbed sleep was similar to the CAR following undisturbed sleep.
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