ArticleSleep2026
Circadian mechanisms underlying post-exercise blood pressure responses in healthy adults.
Article in Sleep, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
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Who cites it
2 citing papers in PubMed.
- Nocturnal peak in cardiac baroreflex effectiveness aligns with nocturnal trough in systolic blood pressure in young healthy adults: Possible circadian effects.Physiological reports · 2026Article
- Unlocking the potential of circadian biology for cardiovascular health.Physiological reviews · 2026Review
Corrections and comments
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Authors and funding
6 authors.
Funding
Abstract
STUDY
objectivesWe aimed to determine whether the endogenous circadian system modulates blood pressure (BP) and its hemodynamic mechanisms during the post-exercise period.
methodsTen healthy adults (mean age: 24 ± 2 [SD] years; 4 males, 6 females) completed a 30-hour circadian protocol in dim light (<8 lux), while all behaviors and measurements were distributed across the 24-hour circadian cycle. Participants underwent five recurring 6-hour cycles of 2-hour sleep opportunities and 4-hour standardized wake episodes. After 90 minutes of awakening during each wake episode, participants performed 30 minutes of moderate-intensity aerobic exercise at 40% heart-rate-reserve. Systolic, diastolic, and mean BP and hemodynamic determinants derived from the beat-to-beat BP waveform (finger photoplethysmography) were measured just before and 30 minutes after the conclusion of each exercise bout. Arm and leg blood flows were assessed using vascular ultrasound. Endogenous circadian phases were determined using each participant's dim-light melatonin onset. Mixed-model cosinor analyses were used to test for the presence of circadian rhythmicity (with significance set at p<.05).
resultsPost-exercise systolic BP reduction and mean BP reduction had significant circadian rhythms, with the greatest decreases at the circadian phase corresponding to ~1 p.m. (-10 and -9 mmHg), respectively. Systemic vascular resistance and leg blood flow also had significant circadian rhythms, with the lowest resistance and greatest blood flow at ~11 a.m.
conclusionsIn young, healthy adults, the circadian system modulates the post-exercise BP reduction, likely due to skeletal muscle vasodilatory mechanisms.
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Registered trials
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