- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT02375503
Efficacy of a Once Daily Calcium and Vitamin D Fortified Food Product to Improve Bone Microarchitecture
May 12, 2017 updated by: United States Army Research Institute of Environmental Medicine
Efficacy of a Once Daily Calcium and Vitamin D Fortified Food Product to Improve Bone Microarchitecture in Response to Army Basic Combat Training
The primary objective of this randomized, double-blind, placebo controlled trial is to determine the efficacy of a once per day calcium (1000mg) and vitamin D (1000IU) fortified food product on bone turnover markers, including parathyroid hormone (PTH) and microarchitecture during Army basic military training (BCT).
The investigators hypothesize that consumption of a once daily calcium and vitamin D fortified food product will stabilize PTH and contribute to improved bone microarchitecture compared to placebo.
The results will determine the efficacy of daily supplementation with calcium and vitamin D on bone turnover markers as well as provide novel data regarding microarchitectural changes during BCT as assessed by high resolution peripheral computed tomography (HRpQCT) scanning.
Study Overview
Status
Completed
Conditions
Intervention / Treatment
Detailed Description
Stress fractures may affect up to 2-5% of male and 8-21% of female Soldiers during training, resulting in attrition in up to 60% of affected personnel.
A recent report indicates that supplemental calcium (2000mg) and vitamin D (800-1000IU) stabilizes PTH, increases tibia volumetric bone mineral density in male and female recruits undergoing Army BCT, and reduces stress fracture incidence by up to 20% in female Nacy recruits.
Bone macroarchitecture has been measured in response to basic training however, the resolution of standard peripheral quantitative computed tomography (pQCT) is insufficient for assessment of microarchitectural changes, which may underlie the pathophysiology of stress fracture.
With the use of HRpQCT this study will allow the investigators to evaluate microarchitectural changes within the bone tissue and assess the efficacy of a moderate daily dose of calcium and vitamin D to support bone health during BCT.
Study Type
Interventional
Enrollment (Actual)
175
Phase
- Not Applicable
Contacts and Locations
This section provides the contact details for those conducting the study, and information on where this study is being conducted.
Study Locations
-
-
South Carolina
-
Columbia, South Carolina, United States, 29207
- Fort Jackson
-
-
Participation Criteria
Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.
Eligibility Criteria
Ages Eligible for Study
17 years to 42 years (Child, Adult)
Accepts Healthy Volunteers
Yes
Genders Eligible for Study
All
Description
Inclusion Criteria:
- Female or male US Army recruits beginning Army basic combat training at Fort Jackson, South Carolina
Exclusion Criteria:
- Pregnant or breastfeeding
- History of kidney stones or kidney disease
- History of amenorrhea
- History or endocrine disorders
- History of bone modifying disorders
- Currently taking, or have taken glucocorticoid drugs in the 2 years prior to study participation
- Currently diagnosed as anemic by healthcare professional
- Those allergic to any component of the snack bar
Study Plan
This section provides details of the study plan, including how the study is designed and what the study is measuring.
How is the study designed?
Design Details
- Primary Purpose: Prevention
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: Quadruple
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: Calcium/Vitamin D
Dietary supplement distributed and consumed as one calcium and vitamin D fortified snack bar per day
|
Daily, calcium and vitamin D fortified snack bar
|
Placebo Comparator: Placebo
Placebo distributed and consumed as one isocaloric, unfortified snack bar per day
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Bone Turnover Markers
Time Frame: 8-10 weeks
|
Participants will have a pre- and post- BCT blood draw
|
8-10 weeks
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Bone Microarchitecture
Time Frame: 8-10 weeks
|
Participants will receive a bone scan pre- and post- BCT in order to determine changes in bone microarchitecture
|
8-10 weeks
|
Collaborators and Investigators
This is where you will find people and organizations involved with this study.
Collaborators
Investigators
- Principal Investigator: Erin Gaffney-Stomberg, Ph.D., R.D., U.S. Army Research Institute of Environmental Medicine
Publications and helpful links
The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.
Study record dates
These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.
Study Major Dates
Study Start
April 1, 2015
Primary Completion (Actual)
June 1, 2015
Study Completion (Actual)
June 1, 2015
Study Registration Dates
First Submitted
February 24, 2015
First Submitted That Met QC Criteria
February 27, 2015
First Posted (Estimate)
March 2, 2015
Study Record Updates
Last Update Posted (Actual)
May 15, 2017
Last Update Submitted That Met QC Criteria
May 12, 2017
Last Verified
May 1, 2017
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- 15-07-HC
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
UNDECIDED
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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