Vitamin D Needs of Early Adolescent Children
Public ClinicalTrials.gov record NCT00931580. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Official title
Supplemental Vitamin D and Functional Outcomes in Early Adolescence
Brief summary
Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.
While a large percentage of children have low blood vitamin D levels, the significance of these low levels and the impact on health is unclear. The purpose of this project is to determine the effects of varying doses of vitamin D supplementation over 12 weeks on blood indicators of health in white and black children, aged 9 to 13 years, from both the northern and southern US.
Study identification
- NCT ID
- NCT00931580
- Recruitment status
- Completed
- Study type
- Interventional
- Phase
- Not applicable
- Enrollment
- 323 participants
Conditions and interventions
Conditions
Eligibility (public fields only)
- Age range
- 9 Years to 13 Years
- Sex
- All
- Healthy volunteers
- Accepts healthy volunteers
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- Sep 30, 2009
- Primary completion
- Mar 31, 2011
- Completion
- Mar 31, 2011
- Last update posted
- Sep 24, 2015
2009 – 2011
United States locations
- U.S. sites
- 3
- U.S. states
- 2
- U.S. cities
- 3
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| The University of Georgia Dept of Foods & Nutrition | Athens | Georgia | 30602 | — |
| Indiana University School of Medicine | Indianapolis | Indiana | 46202 | — |
| Purdue University | West Lafayette | Indiana | 47907 | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT00931580, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted Sep 24, 2015 · Synced Sep 15, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT00931580 live on ClinicalTrials.gov.