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Inter-relationship Between Vitamin D Requirements and Calcium Intake in Older Adults

NCT01990872 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 125

Last updated 2013-11-25

No results posted yet for this study

Summary

This winter-based placebo-controlled, single-dose vitamin D randomized controlled trial (RCT) aims to examine the impact of various levels of habitual calcium intake on dietary vitamin D requirements in older adults stratified by calcium intake. This will provide new data on the impact of different levels of calcium intake, ranging from low/moderate to high, on winter serum 25(OH)D levels, and their utilization and catabolism in adults.

Conditions

  • Vitamin D Deficiency

Interventions

DIETARY_SUPPLEMENT

Vitamin D3 (20 micrograms/day)

Vitamin D3 (20 micrograms/day)

DIETARY_SUPPLEMENT

Placebo

Placebo (0 micrograms vitamin D3/day)

Sponsors & Collaborators

  • University College Cork

    lead OTHER

Principal Investigators

  • Kevin D Cashman, BSc. PhD · University College Cork

Study Design

Allocation
RANDOMIZED
Purpose
PREVENTION
Masking
DOUBLE
Model
PARALLEL

Eligibility

Min Age
50 Years
Max Age
80 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2012-10-31
Primary Completion
2013-11-30
Completion
2013-11-30

Countries

  • Ireland

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 NCT01990872 on ClinicalTrials.gov