Assessment of Prevalence of Vitamin D Deficiency in Obese Adolescent Girls and Influence of Vitamin D on Insulin Secretion and Sensitivity
Sponsor study identifier
observational
114
1 country
1
Study Start
February 2007
Date type not reportedThis date has not been verified as actual or estimated.
Primary Completion
October 2010
Actual (reported)Study Completion
October 2010
Actual (reported)Sub-clinical vitamin D deficiency is a commonly unrecognized disorder in obese adolescents. The investigators hypothesize vitamin D deficiency will be highly prevalent in obese adolescents and those who are vitamin D deficient will be more insulin resistant.
Registry-reported information. Elapsed time and enrollment totals alone do not measure study progress or recruitment pace.
October 2010
Actual (reported)Click on a node to explore related trials.
Dates and qualifiers reported by the registry. Estimated dates do not confirm that a milestone has occurred.
February 2007
Date type not reportedThis date has not been verified as actual or estimated.
February 23, 2009
Actual (reported)February 25, 2009
Actual (reported)October 2010
Actual (reported)October 2010
Actual (reported)To determine the prevalence of subclinical vitamin D deficiency in obese female adolescents.
At study entry
To assess the relationship of serum 25 (OH) D statuses to insulin and glucose concentrations during an OGTT and to serum transaminases and CRP.
At study entry
Obese female adolescents
Obese female adolescents
Children's Hospital, Universiy of Alabama at Birmingham
Birmingham, Alabama, 35233, United States
Ambika Ashraf
University of Alabama at Birmingham
114 participants (actual enrollment reported by the registry).
First Submitted
February 23, 2009
First Posted
February 25, 2009
Study Start
February 2007
Date type not reportedThis date has not been verified as actual or estimated.
The Effect of Weight on Vitamin D Dose Response
Contact the study team to confirm eligibility.
Primary Completion
October 2010
Actual (reported)Study Completion
October 2010
Actual (reported)Last Updated
April 10, 2017
Record last verified: 2011-09
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