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Vitamin supplementation and physical exercise performance.

E J van der Beek1

  • 1Department of Human Nutrition, TNO Toxicology and Nutrition Institute, Zeist, The Netherlands.

Journal of Sports Sciences
|January 1, 1991
PubMed
Summary
This summary is machine-generated.

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Vitamin supplementation in athletes with adequate nutrient levels does not enhance physical performance. Athletes

Area of Science:

  • Sports Nutrition
  • Exercise Physiology
  • Biochemistry

Background:

  • Vitamins are crucial for energy metabolism, particularly in athletes.
  • Athletes often consider vitamin supplementation for performance enhancement.
  • The impact of vitamins on mitochondrial metabolism in athletes is not well understood.

Purpose of the Study:

  • To investigate the role of vitamin supplementation in athletes' physical performance.
  • To examine the influence of vitamin supplementation on mitochondrial energy metabolism.
  • To evaluate the necessity of increased vitamin intake for athletes.

Main Methods:

  • Literature review on vitamin requirements and metabolism in athletes.
  • Analysis of factors potentially increasing vitamin needs in athletes (e.g., absorption, excretion, training adaptation).

Related Experiment Videos

  • Evaluation of evidence for vitamin supplementation effects on physical capacity.

    • Main Results:

    • No evidence suggests increased vitamin requirements or excretion in trained athletes.
    • Vitamin supplementation does not improve physical performance in athletes with adequate vitamin status.
    • Marginal vitamin deficiency can negatively impact performance, but this is not typical in trained athletes.

    Conclusions:

    • Vitamin supplementation is unlikely to benefit athletes with sufficient vitamin intake.
    • Biochemical adaptation to training, not decreased intake, likely explains perceived increased vitamin needs.
    • Potential benefits of specific vitamins (E, C, B-vitamins) may exist under specific environmental conditions (high altitude, heat).