ArticleAmerican journal of physiology. Regulatory, integrative and comparative physiology2025
Do not sleep on vitamin D: vitamin D is associated with sleep variability in apparently healthy adults.
Article in American journal of physiology. Regulatory, integrative and comparative physiology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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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.
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Who cites it
2 citing papers in PubMed.
- Sleep variability and risk of type 2 diabetes mellitus: Mediating role of social participation in a national longitudinal cohort study.Medicine · 2026Article
- Exercise as Vascular Medicine: Can Exercise Combat Negative Health Behaviors From Causing Endothelial Dysfunction?Exercise, sport & movement · 2025Article
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7 authors.
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Abstract
Vitamin D is associated with sleep quality and duration, but it is unclear whether vitamin D status influences sleep variability. Therefore, we sought to determine whether vitamin D status was associated with sleep variability in healthy adults. We assessed objective sleep, including timing and duration standard deviation (SD) using the Philips Actiwatch Spectrum and subjective sleep quality using the Pittsburgh Sleep Quality Index (PSQI) in 130 adults. We measured plasma 25(OH)D concentration to assess vitamin D. We used one-way ANOVAs and Kruskal-Wallis tests to compare sleep in participants characterized as vitamin D deficient (<20 ng/mL), insufficient (21-29 ng/mL), and sufficient (>30ng/mL). We used covariate-adjusted linear regression to assess associations between vitamin D status and sleep metrics. We compared differences in "low" and "high" sleep variability based on vitamin D status using the Chi-squared test. There was an effect of vitamin D status on sleep timing SD (Kruskal-Wallis,
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