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Vitamin supplementation and athletic performance.

M H Williams

    International Journal for Vitamin and Nutrition Research. Supplement = Internationale Zeitschrift Fur Vitamin- Und Ernahrungsforschung. Supplement
    |January 1, 1989
    PubMed
    Summary
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    Athletes often take high-dose vitamin supplements, but research shows correcting deficiencies improves performance. Supplementation for well-nourished athletes generally does not enhance athletic performance, though some vitamins warrant further study.

    Area of Science:

    • Sports Medicine
    • Nutritional Science
    • Exercise Physiology

    Background:

    • Vitamins are crucial metabolic regulators impacting exercise performance.
    • Many elite athletes use high-dose vitamin supplements, exceeding Recommended Dietary Allowances.
    • The rationale for supplementation is linked to specific vitamin functions relevant to athletic demands.

    Purpose of the Study:

    • To explore the role of vitamins in athletic performance.
    • To review the metabolic functions of vitamins and their potential ergogenic effects.
    • To assess the impact of vitamin supplementation on athletes.

    Main Methods:

    • Review of vitamin functions and their relation to sports performance.
    • Analysis of existing research on vitamin supplementation in athletes.

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  • Examination of survey data on elite athlete supplement use.

    • Main Results:

    • Vitamin deficiencies impair physical performance; correction typically improves it.
    • Supplementation in athletes with adequate diets has not generally improved performance.
    • Specific vitamins like B complex and E may require further investigation for ergogenic potential.

    Conclusions:

    • Correcting vitamin deficiencies is key for athletic performance.
    • Evidence does not broadly support vitamin supplementation for performance enhancement in well-nourished athletes.
    • Further research is needed for specific vitamins (e.g., B complex, E) and megadose effects.