Vitamin D Needs of Early Adolescent Children
Completed · Not applicable · Has a placebo group
Conditions studied: Healthy
In brief
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.
Key facts
- Study ID
- NCT00931580
- Run by
- University of Georgia
- People needed
- 323
- Starts
- 2009-10-01
- Expected to finish
- 2011-04-01
- Last updated by the study team
- 2015-09-25
Who can join
Age: 9 and older, up to 13. Sex: any. Healthy volunteers: accepted.
You may qualify if…
- Healthy
- Non-Hispanic
- Male, 10-13 years of age or female 9-11 years of age
- Within genitalia or breast stage 2/3
- Willing to provide blood/urine samples
- Free from taking vitamin, mineral or herbal supplements
- Able to swallow tablets
You may not qualify if…
- Menarche (females)
- Known bone diseases or disease known to influence bone metabolism (e.g. cerebral palsy, intestinal malabsorption, juvenile rheumatoid arthritis)
- Known growth disorder
- The use of medications that influence bone metabolism (e.g. corticosteroids, Attention Deficit Hyperactivity Disorder (ADHD) medications).
Where it is running
- The University of Georgia Dept of Foods & Nutrition — Athens, Georgia, United States
- Indiana University School of Medicine — Indianapolis, Indiana, United States
- Purdue University — West Lafayette, Indiana, United States
Full record on ClinicalTrials.gov
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