Medical Information Only. Always consult your healthcare provider before enrolling in any clinical trial.

NCT01856946 · ClinicalTrials.gov registry record · NA

Effect of Vitamin D Supplementation on Oral Glucose Tolerance Among Obese Adolescents

A NA study, sponsored by University of Missouri-Columbia.

Completed
Registry status
NA
Development phase
15
Enrollment target

NCT01856946: Completed NA study, sponsored by University of Missouri-Columbia.

NCT01856946 is a NA study that has completed, run by University of Missouri-Columbia. The registered enrollment target is 15 participants, below the 1,404-participant average among 58,714 other NA trials with a reported enrollment target (99% lower). According to ClinicalTrials.gov, the official US trial registry.

View on ClinicalTrials.gov ↗

View your shortlist →

The verdict

NCT01856946, a NA study, has completed, sponsored by University of Missouri-Columbia.

COMPLETED
Registry status
NA
Development phase
15 participants
Enrollment target

Study Summary

Childhood obesity is a rapidly growing epidemic in the US and the world. Current estimates suggest that 30% of our nation's children are either overweight ot obese. Obesity is a major risk factor towards the development of insulin resistance, which, in turn is a major risk factor for the development of type 2 diabetes. Prior research has suggested that vitamin D therapy may be a safe, inexpensive, and effective method of reducing insulin resistance and a person's risk of developing diabetes. The investigators' prior studies have shown that daily 4,000 IU vitamin D therapy is a safe and effective method of improving insulin resistance based on a calculation called the HOMA-IR. The next step in identifying whether vitamin D truly improves insulin resistance is to use oral glucose tolerance testing (OGTT), which is a better real-life measure of insulin resistance compared to the previously used HOMA-IR.

Primary Outcome

Will obtain oral glucose tolerance tests at baseline and at 6 months to determine change

Interventions

  • DIETARY_SUPPLEMENT 4,000 IU vitamin D3

Trial Details

FieldValue
Enrollment Target 15 participants
Start Date 2013-05
Est. Completion 2014-02
Phase NA
University of Missouri-Columbia

291 total trials

What the finished NCT01856946 record still lists

NCT01856946 is an interventional study that assigns participants to a tested intervention. The registry caps enrollment at 15 participants, a relatively small participant target, below the 1,404-participant average among 58,714 other NA trials with a reported enrollment target (99% lower).

The record links to 0 conditions, and to 1 intervention - of which 4,000 IU vitamin D3 is the first listed.

NCT01856946 does not publish any study locations in the registry export this page uses.

Frequently Asked Questions

What is clinical trial NCT01856946 about?

NCT01856946 is a clinical study titled "Effect of Vitamin D Supplementation on Oral Glucose Tolerance Among Obese Adolescents". Childhood obesity is a rapidly growing epidemic in the US and the world. Current estimates suggest that 30% of our nation's children are either overweight ot obese. Obesity is a major risk factor towards the development of insulin resistance, which, in turn is a major risk factor for the development...

What is the current status of trial NCT01856946?

This trial is currently completed. It is a NA study. The enrollment target is 15 participants. The study started on 2013-05. Estimated completion is 2014-02.

What interventions are being tested in trial NCT01856946?

The interventions under investigation include: 4,000 IU vitamin D3 (DIETARY_SUPPLEMENT).

Who is sponsoring clinical trial NCT01856946?

This trial is sponsored by University of Missouri-Columbia, which has 291 total clinical trials registered on ClinicalTrials.gov.

How this trial's enrollment target compares

Where NCT01856946's enrollment target sits among peer trials

15 1881st of 2000 higher than 92 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

Nationwide trials with similar profiles

Cross-condition peers matched on enrollment target and registry start date, not the same-condition list above.

Similar enrollment target

  • NCT01889381 · 15 participants · Phase 2

    Human Craniomaxillofacial Allotransplantation

  • NCT02530073 · 15 participants · NA

    Trial of Fetoscopic Endoluminal Tracheal Occlusion (FETO) for CDH

  • NCT02535936 · 15 participants · NA

    Cortical Plasticity in Spastic Diplegia After Selective Dorsal Rhizotomy

  • NCT02918474 · 15 participants · NA

    Decision Making Tool in Supporting Decision Making in Contralateral Prophylactic Mastectomy in Patients With Newly Diagnosed Breast Cancer

Similar registry start date

  • NCT05988463 · started 2027-01-01 · Phase 1

    Dose-Escalation Study of Artesunate Patients With IPF

  • NCT07219706 · started 2026-12-10 · NA

    Dietary Fiber and Time Restricted Eating

  • NCT02831335 · started 2026-12-01

    Technical Development of Multi-Parametric Renocerebral MRI

  • NCT05962346 · started 2026-12 · NA

    Fetal Endoscopic Tracheal Occlusion for Congenital Diaphragmatic Hernia

Source: ClinicalTrials.gov NCT01856946, the US trial registry maintained by the National Library of Medicine. NCT01856946 (small enrollment · none site footprint · completed) retrieved and formatted by PlainTrial, see methodology.