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Vitamin D Supplementation and Immunity/Physical Performance

B

Bangor University

Status

Unknown

Conditions

Vitamin D Status

Treatments

Dietary Supplement: Oral Vitamin D3
Radiation: Solar simulated radiation (SSR)
Dietary Supplement: Placebo Oral Vitamin D3
Radiation: Placebo SSR

Study type

Interventional

Funder types

Other

Identifiers

NCT03132103
692/Gen/10

Details and patient eligibility

About

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

Full 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.

Enrollment

260 estimated patients

Sex

Male

Ages

17 to 35 years old

Volunteers

Accepts Healthy Volunteers

Inclusion criteria

  • Passed medical assessment by medical doctor

Exclusion criteria

  • Medically deferred by medical doctor
  • Regular sun bed use
  • Holiday in a hot sunny climate in <3 months
  • Regular vitamin D supplementation

Trial design

Primary purpose

Prevention

Allocation

Randomized

Interventional model

Parallel Assignment

Masking

Double Blind

260 participants in 4 patient groups, including a placebo group

Solar simulated radiation (SSR)
Experimental group
Description:
Solar simulated radiation (SSR)
Treatment:
Radiation: Solar simulated radiation (SSR)
Placebo SSR
Placebo Comparator group
Description:
Placebo SSR
Treatment:
Radiation: Placebo SSR
Oral Vitamin D3
Experimental group
Description:
Oral Vitamin D3
Treatment:
Dietary Supplement: Oral Vitamin D3
Placebo Oral Vitamin D3
Placebo Comparator group
Description:
Placebo Oral Vitamin D3
Treatment:
Dietary Supplement: Placebo Oral Vitamin D3

Trial contacts and locations

1

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Central trial contact

Dr Julie Greeves, PhD; Prof Neil Walsh, PhD

Data sourced from clinicaltrials.gov

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