ArticleSleep2023
The circadian variation of sleep and alertness of postmenopausal women.
Article in Sleep, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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Who cites it
10 citing papers in PubMed, 15 citations in OpenAlex.
- Midlife Sleep and Circadian Health: Implications for Cardiovascular and Cognitive Outcomes.Obstetrics and gynecology clinics of North America · 2026Review
- Demographic and socioeconomic inequalities in sleep quality among Chinese aged 15 years and above: a national population-based study.The Lancet regional health. Western Pacific · 2026Article
- Article
- Insomnia symptoms, sleep duration, and risk of falls in older adult women: findings from the Study of Women's Health Across the Nation.The journals of gerontology. Series A, Biological sciences and medical sciences · 2026Article
- Menopause-Related Changes in Sleep and the Associations with Cardiometabolic Health: A Narrative Review.Healthcare (Basel, Switzerland) · 2025Review
- Dampened circadian amplitude of EEG power in women after menopause.Journal of sleep research · 2025Article
- Transition of nighttime sleep duration and sleep quality with incident cardiovascular disease among middle-aged and older adults: results from a national cohort study.Archives of public health = Archives belges de sante publique · 2025Article
- Global, regional, and national burden of low back pain in postmenopausal women from 1990 to 2021: a comprehensive analysis using data from the Global Burden of Disease Study 2021.Frontiers in endocrinology · 2025Article
- Article
- Light exposure during sleep is bidirectionally associated with irregular sleep timing: The multi-ethnic study of atherosclerosis (MESA).Environmental pollution (Barking, Essex : 1987) · 2024Article
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Authors and funding
6 authors at 1 institution in 2 countries.
Funding
Abstract
STUDY
objectivesSeveral factors may contribute to the high prevalence of sleep disturbances occurring in postmenopausal women. However, the contribution of the circadian timing system to their sleep disturbances remains unclear. In the present study, we aim to understand the impact of circadian factors on changes of sleep and alertness occurring after menopause.
methodsEight healthy postmenopausal women and 12 healthy young women in their mid-follicular phase participated in an ultradian sleep-wake cycle procedure (USW). This protocol consisted of alternating 60-min wake periods and nap opportunities for ≥ 48 h in controlled laboratory conditions. Core body temperature (CBT), salivary melatonin, self-reported alertness, and polysomnographically recorded sleep were measured across this procedure.
resultsIn both groups, all measures displayed a circadian variation throughout the USW procedure. Compared to young women, postmenopausal women presented lower CBT values, more stage N1 and N2 sleep, and number of arousals. They also showed a reduced amplitude of the circadian variation of melatonin, total sleep time (TST), sleep onset latency (SOL), stage N3 sleep, and alertness levels. Postmenopausal women fell asleep faster and slept more during the biological day and presented higher alertness levels during the biological night than young women.
conclusionThese results support the hypothesis of a weakened circadian signal promoting sleep and wakefulness in older women. Aging processes including hormonal changes may be main contributors to the increased sleep-wake disturbances after menopause.
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