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The purpose of this study is to examine the effect of vitamin D supplementation on vitamin D status, immunity and physical performance.
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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.
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Interventional model
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260 participants in 4 patient groups, including a placebo group
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Prof Neil Walsh, PhD; Dr Julie Greeves, PhD
Data sourced from clinicaltrials.gov
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