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Optimizing Vitamin D Status During Initial Military Training

NCT01617109 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 342

Last updated 2018-10-11

No results posted yet for this 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.

Conditions

  • Bone Health
  • Nutrition Status

Interventions

DIETARY_SUPPLEMENT

Ca/Vit D

800IU vitamin D3 and 2000mg elemental calcium (as calcium carbonate); administered as 5 pills daily or 2 snack bars

OTHER

Placebo

administered as 5 pills daily or as 2 snack bars

Sponsors & Collaborators

  • United States Army Research Institute of Environmental Medicine

    lead FED

Principal Investigators

  • James P McClung, Ph.D. · US Army Research Institute of Environmental Medicine

Study Design

Allocation
RANDOMIZED
Purpose
PREVENTION
Masking
QUADRUPLE
Model
PARALLEL

Eligibility

Min Age
17 Years
Max Age
42 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2012-06-30
Primary Completion
2014-01-31
Completion
2018-05-02

Countries

  • United States

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT01617109 on ClinicalTrials.gov