Evidence map›Paper›PMID 42769702›Full record

ArticleSleep advances : a journal of the Sleep Research Society2026

A pilot study investigating the effect of serum 25-hydroxyvitamin D on device-estimated sleep metrics in young black women: a single-arm open-label clinical trial.

Michele N D'Agata, Krista M Szymanski, Freda Patterson, Mackenzie L Rattigan, Alexs A Matias, David G Edwards, Christopher R Martens, Sushant M Ranadive, Melissa A Witman

Registry-linked trialAbstract read
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In one paragraph

Article in Sleep advances : a journal of the Sleep Research Society, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT05656742 (Effects of Vitamin D on Cardiovascular Health in Black Women), which is not on this map. Not yet cited in PubMed.

0numbers the graph read from it
0cells of the map it votes in
0citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

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.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

NCT05656742 nacompletednot on this map

Effects of Vitamin D on Cardiovascular Health in Black Women

TypeinterventionalSponsorUniversity of DelawareRan2023 to 2025Enrolled22ConditionsVitamin d DeficiencyArmsVitamin D
3 · Its place in the literature

Who cites it

0 citing papers in PubMed.

No citing paper in PubMed yet.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors.

Michele N D'AgataDepartment of Kinesiology and Applied Physiology, College of Health Sciences, University of Delaware, Newark, DE, United States.
Krista M SzymanskiDepartment of Kinesiology and Applied Physiology, College of Health Sciences, University of Delaware, Newark, DE, United States.
Freda PattersonDepartment of Health Behavior and Nutrition Science, College of Health Sciences, University of Delaware, Newark, DE, United States.ORCID https://orcid.org/0000-0001-6561-3092
Mackenzie L RattiganDepartment of Kinesiology and Applied Physiology, College of Health Sciences, University of Delaware, Newark, DE, United States.
Alexs A MatiasDepartment of Kinesiology and Applied Physiology, College of Health Sciences, University of Delaware, Newark, DE, United States.
David G EdwardsDepartment of Kinesiology and Applied Physiology, College of Health Sciences, University of Delaware, Newark, DE, United States.ORCID https://orcid.org/0000-0002-5098-6678
Christopher R MartensDepartment of Kinesiology and Applied Physiology, College of Health Sciences, University of Delaware, Newark, DE, United States.ORCID https://orcid.org/0000-0003-0578-2948
Sushant M RanadiveDepartment of Kinesiology, School of Public Health, University of Maryland, College Park, MD, United States.
Melissa A WitmanDepartment of Kinesiology and Applied Physiology, College of Health Sciences, University of Delaware, Newark, DE, United States.ORCID https://orcid.org/0000-0002-9003-8779

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Study Objectives: Vitamin D deficiency has been linked to poor sleep health outcomes in the general population. Black women (BLW) experience a higher prevalence of vitamin D deficiency and short and disturbed sleep compared with other races. Therefore, this study tested cross-sectional associations between serum 25-hydroxyvitamin D concentration ([25(OH)D]) and sleep health estimates in young adult BLW, followed by an 8-week vitamin D supplementation intervention. Materials and Methods: Forty-three 18-30-year-old BLW underwent blood sampling for serum [25(OH)D]. Sleep metrics were derived from 14-days of wrist accelerometry. Thereafter, participants with [25(OH)D] <30 ng/ml (N = 16) completed an 8-week vitamin D3 supplementation intervention (5000 IU/day) and repeated blood sampling and sleep monitoring. Results: Linear regressions demonstrate significant cross-sectional associations for [25(OH)D] with sleep efficiency (β = 0.11, Conclusions: [25(OH)D] was cross-sectionally associated with sleep efficiency and SOSD, however, intervention results from this pilot study do not demonstrate a beneficial effect of vitamin D on several device-estimated sleep metrics in young BLW. Clinical Trial Registration: Effects of Vitamin D on Cardiovascular Health in Black Women, https://clinicaltrials.gov/study/NCT05656742?locStr=Delaware&country=United%20States&state=Delaware&cond=Vitamin%20D%20Deficiency&term=blood%20pressure&intr=Vitamin%20D&rank=1 Registered on ClinicalTrials.gov ID NCT05656742.

Indexed as

Actigraphyblack womensleepvitamin D

Identifiers

PMID42769702
PMCPMC13592166

What OpenQuestion holds

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Registered trials

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.