Overnight Temperature Regulation Improves Circadian Rhythm and Cardiovascular Recovery in Postmenopausal Women and Age-Matched Men

LightLight and diurnal cycle affect autonomic cardiac balance in human

Nocturnal peak in cardiac baroreflex effectiveness aligns with nocturnal trough in systolic blood pressure in young healthy adults: Possible circadian effects

In healthy adults, the nocturnal peak in BEI is possibly aligned with the circadian trough in systolic BP, and whether the alignment holds in people with disease remains to be determined.

Sleep and Overnight Cardiovascular Outcomes During the First Week on a Temperature-Controlled Sleep Surface: Stratified by Baseline Performance

Temperature-controlled sleep surfaces are used nightly by hundreds of thousands of people. Despite mass adoption, subjective reports of sleep quality have not yet been substantiated with objective measurements; whether differences in individual baseline sleep contribute to overall efficacy remains unknown. Cohort means...

Sleep, chronotype, and jet lag in athletic performance: a narrative review

Background: The circadian timing system governs near-24-hour rhythms in body temperature, hormone secretion, and neuromuscular function that shape athletes' capacity to train, recover, and compete. Sleep, chronotype, and transmeridian travel are three interrelated circadian domains with direct medical relevance for per...

Night-to-night sleep variability and all-cause and cardiovascular mortality: a prospective cohort study with a complementary in vitro circadian-disruption experiment.

Background Irregular sleep-wake patterns may disrupt circadian rhythms, but the dose-response relationship between night-to-night sleep variability and mortality and the association of sleep onset variability with death remain unclear. Methods Using 4-7 valid days of wrist accelerometer data, including ≥1 weekend day...

Physiological load and circadian organization of cardiovascular, autonomic and thermal functions in dry and lactating ewes assessed using biologgers

Lactation is a physiologically demanding period in sheep that is characterized by an increase in metabolic and cardiovascular requirements. Although physiological changes during lactation have been well documented, less is known about how lactation affects the circadian organization of cardiovascular and autonomic...