NCT03132103

Vitamin D Supplementation and Immunity/Physical Performance

The Effect of Vitamin D Supplementation on Vitamin D Status, Immunity and Physical Performance

• Status: Unknown
• Phase: N/A
• Study type: Interventional
• Enrollment: 260 (estimated)
• Sponsor: Bangor University · Academic / Other
• Sex: Male
• Age: 17 Years – 35 Years
• Healthy volunteers: Accepted

Summary

The purpose of this study is to examine the effect of vitamin D supplementation on vitamin D status, immunity and physical performance.

Detailed description

Vitamin D plays a key role in bone mineralisation and has been linked to immune defence maintenance and muscle function. Vitamin D is primarily obtained from endogenous synthesis in response to skin sunlight exposure and follows a seasonal pattern; whereby, vitamin D levels peak at the end of the summer and fall to a trough during winter. If winter vitamin D levels can be increased to match those found in summer using supplementation, it is proposed sufficient vitamin D levels will improve physical performance and reduce susceptibility to illness in military recruits.

Conditions

• Vitamin D Status

Interventions

Type	Name	Description
DIETARY_SUPPLEMENT	Oral Vitamin D3
DIETARY_SUPPLEMENT	Placebo Oral Vitamin D3
RADIATION	Solar simulated radiation (SSR)
RADIATION	Placebo SSR

Timeline

• Start date: 2016-01-06
• Primary completion: 2017-04-28
• Completion: 2017-08-31
• First posted: 2017-04-27
• Last updated: 2017-04-27

Locations

1 site across 1 country: United Kingdom