Assessment of vitamin D concentration in non-supplemented professional athletes and healthy adults during the winter months in the UK: implications for skeletal muscle function

G L Close, J Russell, J N Cobley, D J Owens, G Wilson, W Gregson, W D Fraser, J P Morton

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The current study implemented a two-part design to (1) assess the vitamin D concentration of a large cohort of non-vitamin D supplemented UK-based athletes and 30 age-matched healthy non-athletes and (2) to examine the effects of 5000 IU · day(-1) vitamin D(3) supplementation for 8-weeks on musculoskeletal performance in a placebo controlled trial. Vitamin D concentration was determined as severely deficient if serum 25(OH)D
Original languageEnglish
Pages (from-to)344-53
Number of pages10
JournalJournal of Sports Sciences
Issue number4
Publication statusPublished - 2013


  • Adolescent
  • Adult
  • Athletic Performance
  • Case-Control Studies
  • Dietary Supplements
  • Great Britain
  • Humans
  • Male
  • Movement
  • Muscle, Skeletal
  • Physical Exertion
  • Prevalence
  • Running
  • Seasons
  • Sports
  • Vitamin D
  • Vitamin D Deficiency
  • Young Adult

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