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NCT01617109 · ClinicalTrials.gov registry record · NA
Optimizing Vitamin D Status During Initial Military Training
A NA study, sponsored by United States Army Research Institute of Environmental Medicine.
- Completed
- Registry status
- NA
- Development phase
- 342
- Enrollment target
NCT01617109: Completed NA study, sponsored by United States Army Research Institute of Environmental Medicine.
NCT01617109 is a NA study that has completed, run by United States Army Research Institute of Environmental Medicine. The registered enrollment target is 342 participants, below the 1,404-participant average among 58,714 other NA trials with a reported enrollment target (76% lower). According to ClinicalTrials.gov, the official US trial registry.
The verdict
NCT01617109, a NA study, has completed, sponsored by United States Army Research Institute of Environmental Medicine.
- COMPLETED
- Registry status
- NA
- Development phase
- 342 participants
- Enrollment target
Study Summary
The primary objective of this randomized, double-blind, placebo-controlled trial is to determine the effect of vitamin D and calcium supplementation (800IU and 2000mg, respectively) on biochemical indicators of nutritional status and bone health in military personnel during Army basic combat training (BCT) and Air Force basic military training (BMT). The investigators hypothesize that daily supplementation with vitamin D and calcium during military training will improve vitamin D status, stabilize PTH levels, and result in improvements in markers of bone health. As a result of the investigators study design, the findings will provide critically important data regarding the concentration of vitamin D in blood necessary to stabilize PTH levels and to optimize bone formation during initial military training.
Interventions
- OTHER Placebo
- DIETARY_SUPPLEMENT Ca/Vit D
Trial Details
| Field | Value |
|---|---|
| Enrollment Target | 342 participants |
| Start Date | 2012-06 |
| Est. Completion | 2018-05-02 |
| Phase | NA |
What the finished NCT01617109 record still lists
NCT01617109 is an interventional study that assigns participants to a tested intervention. The registered 342 participants enrollment target is mid-sized for trials with a published cap, below the 1,404-participant average among 58,714 other NA trials with a reported enrollment target (76% lower).
The record links to 0 conditions, and to 2 interventions - of which Placebo is the first listed.
NCT01617109 does not publish any study locations in the registry export this page uses.
Frequently Asked Questions
What is clinical trial NCT01617109 about?
NCT01617109 is a clinical study titled "Optimizing Vitamin D Status During Initial Military Training". The primary objective of this randomized, double-blind, placebo-controlled trial is to determine the effect of vitamin D and calcium supplementation (800IU and 2000mg, respectively) on biochemical indicators of nutritional status and bone health in military personnel during Army basic combat trainin...
What is the current status of trial NCT01617109?
This trial is currently completed. It is a NA study. The enrollment target is 342 participants. The study started on 2012-06. Estimated completion is 2018-05-02.
What interventions are being tested in trial NCT01617109?
The interventions under investigation include: Placebo (OTHER), Ca/Vit D (DIETARY_SUPPLEMENT).
Who is sponsoring clinical trial NCT01617109?
This trial is sponsored by United States Army Research Institute of Environmental Medicine, which has 59 total clinical trials registered on ClinicalTrials.gov.
Learn More About Clinical Trials
How this trial's enrollment target compares
Where NCT01617109's enrollment target sits among peer trials
342 302nd of 2000 higher than 1,699 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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