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    The influence of winter vitamin D supplementation on muscle function and injury occurrence in elite ballet dancers: A controlled study.

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    Authors
    Wyon, Matthew A.
    Koutedakis, Yiannis cc
    Wolman, Roger
    Nevill, Alan M.
    Allen, Nick
    Issue Date
    2013-04-22
    
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    Abstract
    OBJECTIVES: Athletes who train indoors during the winter months exhibit low serum 25-hydroxyvitamin D [25(OH)D] concentrations due to a lack of sunlight exposure. This has been linked to impaired exercise performance. The purpose of this study was to assess the effects of oral vitamin D3 supplementation on selected physical fitness and injury parameters in elite ballet dancers. DESIGN: Controlled prospective study. METHODS: 24 elite classical ballet dancers (intervention n=17; control n=7) participated in a controlled 4-month oral supplementation of vitamin D3 (2000IU per day). Isometric muscular strength and vertical jump height were measured pre and post intervention. Injury occurrence during the intervention period was also recorded by the in-house medical team. Repeated measures ANOVA and Mann-Whitney-U statistical tests were used and significance was set at p≤0.05. RESULTS: Significant increases were noted for the intervention group for isometric strength (18.7%, p<0.01) and vertical jump (7.1%, p<0.01). The intervention group also sustained significantly less injuries than the controls during the study period (p<0.01). CONCLUSIONS: Oral supplementation of vitamin D3 during the winter months has beneficial effects on muscular performance and injury occurrence in elite ballet dancers.
    Citation
    The influence of winter vitamin D supplementation on muscle function and injury occurrence in elite ballet dancers: A controlled study. 2013: J Sci Med Sport
    Publisher
    Elsevier
    Journal
    Journal of science and medicine in sport / Sports Medicine Australia
    URI
    http://hdl.handle.net/2436/293739
    DOI
    10.1016/j.jsams.2013.03.007
    PubMed ID
    23619160
    Type
    Journal article
    Language
    en
    ISSN
    1878-1861
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.jsams.2013.03.007
    Scopus Count
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    Faculty of Education, Health and Wellbeing

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