Vitamin D Status and Immune Function

Completed

• Conditions: Vitamin D Deficiency

• Registration Number: NCT02416895
• Lead Sponsor: Bangor University

Brief Summary

The purpose of this study is to examine the relationship between Vitamin D status and immunity.

Detailed Description

Vitamin D is mainly obtained from the sun and follows a seasonal pattern, with Vitamin D levels peaking in summer and reaching a trough during winter. Vitamin D deficiency is associated with impaired immunity. However, knowledge of Vitamin D deficiency with in vivo immunity is limited. This observational study aims to investigate the relationship between Vitamin D status and the in vivo immunity.

Study Timeline

• Study Start: 2014-04
• Study First Submitted: 2015-03-25
• Study First Submitted QC: 2015-04-09
• Study First Posted: 2015-04-15
• Primary Completion: 2015-12
• Study Completion: 2015-12
• Status Verified: 2017-03
• Last Update Submitted: 2017-04-04
• Last Update Posted: 2017-04-05

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 264

Inclusion Criteria

• Passed medical assessment by medical doctor
• Passed audio test (this is part of medical assessment)
• Met physical fitness requirements

Exclusion Criteria

• Medically deferred by medical doctor

Study & Design

• Study Type: OBSERVATIONAL
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
Vitamin D measured by liquid chromatography tandem mass spectroscopy	Up to 20 months	Circulating 25-hydroxy-vitamin D

Secondary Outcome Measures

Name	Time	Method
Immune function measured by analytic biochemistry assay	Up to 20 months	In vivo immune measure

Trial Locations

Locations (1)

Infantry Training Centre; 🇬🇧 Catterick, North Yorkshire, United Kingdom