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NCT07654777 · ClinicalTrials.gov registry record · NA
The Efficacy of Vitamin D Supplementation to Sustain Performance Outcomes
A NA study, sponsored by Walter Reed Army Institute of Research (WRAIR).
- Recruiting
- Registry status
- NA
- Development phase
- 52
- Enrollment target
NCT07654777: Recruiting NA study, sponsored by Walter Reed Army Institute of Research (WRAIR).
NCT07654777 is a NA study that is actively recruiting participants, run by Walter Reed Army Institute of Research (WRAIR). The registered enrollment target is 52 participants, below the 1,404-participant average among 58,714 other NA trials with a reported enrollment target (96% lower). According to ClinicalTrials.gov, the official US trial registry.
The verdict
NCT07654777, a NA study, is actively recruiting participants, sponsored by Walter Reed Army Institute of Research (WRAIR).
- RECRUITING
- Registry status
- NA
- Development phase
- 52 participants
- Enrollment target
Study Summary
The goal of this clinical trial is to find out if vitamin D supplements help healthy adults maintain their cognitive and simple physical task performance and emotional state during highly stressful situations. The main question it aims to answer is: \- Does vitamin D help maintain cognitive and physical task performance and emotional state during highly stressful situations? Researchers will compare vitamin D to placebo (a look-alike tablet that contains no active ingredients) to see if vitamin D better maintain cognitive and physical task performance and emotional state during highly stressful situations. Participants will: * Take vitamin D or placebo tablets daily for 8 weeks. * Perform cognitive and simple physical tasks and rate their emotional state under highly stressful situations. * Wear a stress belt that delivers mild electric shocks 1 - 5 times while participants are performing laboratory tasks. * Wear a wristwatch-shaped activity monitor for 9 weeks. * Visit the laboratory 5 times.
Primary Outcome
Measure of cognitive performance. Percentage correct for No-Go trials.
Interventions
- DIETARY_SUPPLEMENT Vitamin D3 (Cholecalciferol)
- DIETARY_SUPPLEMENT Oral Placebo Tablet
Trial Details
| Field | Value |
|---|---|
| Enrollment Target | 52 participants |
| Start Date | 2026-06 |
| Est. Completion | 2027-09 |
| Phase | NA |
What NCT07654777 shows while recruiting
NCT07654777 is an interventional study that assigns participants to a tested intervention. The registry caps enrollment at 52 participants, a relatively small participant target, below the 1,404-participant average among 58,714 other NA trials with a reported enrollment target (96% lower).
The record links to 0 conditions, and to 2 interventions - of which Vitamin D3 (Cholecalciferol) is the first listed.
NCT07654777 does not publish any study locations in the registry export this page uses.
Frequently Asked Questions
What is clinical trial NCT07654777 about?
NCT07654777 is a clinical study titled "The Efficacy of Vitamin D Supplementation to Sustain Performance Outcomes". The goal of this clinical trial is to find out if vitamin D supplements help healthy adults maintain their cognitive and simple physical task performance and emotional state during highly stressful situations. The main question it aims to answer is: \- Does vitamin D help maintain cognitive and ph...
What is the current status of trial NCT07654777?
This trial is currently recruiting. It is a NA study. The enrollment target is 52 participants. The study started on 2026-06. Estimated completion is 2027-09.
What interventions are being tested in trial NCT07654777?
The interventions under investigation include: Vitamin D3 (Cholecalciferol) (DIETARY_SUPPLEMENT), Oral Placebo Tablet (DIETARY_SUPPLEMENT).
Who is sponsoring clinical trial NCT07654777?
This trial is sponsored by Walter Reed Army Institute of Research (WRAIR), which has 12 total clinical trials registered on ClinicalTrials.gov.
Learn More About Clinical Trials
How this trial's enrollment target compares
Where NCT07654777's enrollment target sits among peer trials
52 1272nd of 2000 higher than 722 of 2,000 other NA trials
participants (enrollment target), bucketed by value
Each bar is a band; taller bars hold more other NA trials. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source ClinicalTrials.gov registry export · 2026-08-08
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