TitleModeling Cortisol Daily Rhythms of Family Caregivers of Individuals With Dementia: Daily Stressors and Adult Day Services Use.
Publication TypeJournal Article
Year of Publication2018
AuthorsLiu, Y, Almeida, DM, Rovine, MJ, Zarit, SH
JournalJ Gerontol B Psychol Sci Soc Sci
Date Published2018 Mar 02
KeywordsAdult, Adult Day Care Centers, Aged, Aged, 80 and over, Caregivers, Circadian Rhythm, Dementia, Female, Humans, Hydrocortisone, Male, Middle Aged, Patient Acceptance of Health Care, Saliva, Sleep, Stress, Psychological

<p><b>OBJECTIVES: </b>The study examined the typical diurnal cortisol trajectory and its differential associations with an intervention, the adult day services (ADS) use, among a sample of family caregivers who experienced high levels of daily stress.</p><p><b>METHOD: </b>On hundred and sixty-five caregivers of individuals with dementia completed an 8-day diary on daily stressors, positive events, sleep quality, and ADS use. The caregivers also provided five saliva samples on each diary day. Daily cortisol trajectories were modeled as a function of time elapsed since awakening, and three spline growth curve models were fit to the cortisol data. Based on the best-fitting linear spline model, the effect of daily ADS use was examined at both daily and person levels. Covariates included daily experiences and other caregiving characteristics.</p><p><b>RESULTS: </b>On ADS days, caregivers had a steeper cortisol awakening response (CAR) slope and a steeper morning decline. ADS use remained significant after controlling for covariates at both daily and person levels.</p><p><b>DISCUSSION: </b>The findings suggested potential biophysiological benefits of daily ADS use for a sample that was under chronic stress and high levels of daily stress.</p>

Alternate JournalJ Gerontol B Psychol Sci Soc Sci
PubMed ID27738082
PubMed Central IDPMC5927159
Grant ListR01 AG031758 / AG / NIA NIH HHS / United States
UL1 TR001425 / TR / NCATS NIH HHS / United States