Sleep timing, sleep timing regularity, and cognitive performance in women entering late adulthood: the Study of Women's Health Across the Nation (SWAN).

ABSTRACT:

Study objectives

This study examined whether sleep timing and its regularity are associated with cognitive performance in older women and whether associations vary based on cardiometabolic risk factors.

Methods

The cross-sectional analysis included 1177 community-dwelling females (mean age 65 years) from the observational Study of Women's Health Across the Nation (SWAN) annual visit 15. Sleep timing (mean midpoint from sleep onset to wake-up) and its regularity (standard deviation of midpoint) were assessed using actigraphy. Cognitive measures included immediate and delayed verbal memory, working memory, and processing speed. Cardiometabolic risk measures included central obesity, hypertension, diabetes, and the Atherosclerotic Cardiovascular Disease (ASCVD) risk score. Line

SUBMITTER: Swanson LM 

PROVIDER: S-EPMC12068052 | biostudies-literature | 2025 May

REPOSITORIES: biostudies-literature