Journal
PSYCHOLOGY AND AGING
Volume 24, Issue 4, Pages 819-827Publisher
AMER PSYCHOLOGICAL ASSOC
DOI: 10.1037/a0017910
Keywords
multilevel modeling; HPA axis; stress
Categories
Funding
- NIA NIH HHS [R01 AG019239-06, P01 AG020166, R01 AG019239] Funding Source: Medline
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This article shows age and gender differences in the magnitude and day-to-day variability of the cortisol awakening response (CAR) using a national sample of 1,143 adults who completed the second wave of the National Study of Daily Experiences, a part of the Midlife Development in the United States survey. Participants between the ages of 33 and 84 years completed 8 consecutive nightly interviews and provided 4 saliva samples (upon waking, 30 min after waking, before lunch, and before bed) on 4 consecutive interview days. Results revealed substantial day-to-day variability in the CAR as well as significant Age X Gender inter-actions, indicating that although no systematic age-related differences emerged for women, the magnitude and day-to-day variability of the CAR increased with age among men.
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