TitleInterindividual differences and intraindividual variability in the cortisol awakening response: an examination of age and gender.
Publication TypeJournal Article
Year of Publication2009
AuthorsAlmeida, DM, Piazza, JR, Stawski, RS
JournalPsychol Aging
Date Published2009 Dec
KeywordsAdult, Age Factors, Aged, Aged, 80 and over, Female, Humans, Hydrocortisone, Hypothalamo-Hypophyseal System, Individuality, Male, Middle Aged, Pituitary-Adrenal System, Saliva, Stress, Psychological, Wakefulness

<p>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 AgexGender interactions, 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.</p>

Alternate JournalPsychol Aging
PubMed ID20025398
PubMed Central IDPMC2810505
Grant ListR01 AG019239 / AG / NIA NIH HHS / United States
R01 AG019239-06 / AG / NIA NIH HHS / United States
P01 AG020166 / AG / NIA NIH HHS / United States