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Related Experiment Videos

Vitamin E, vitamin C, and exercise.

W J Evans1

  • 1Nutrition, Metabolism, and Exercise Program, University of Arkansas for Medical Sciences, Little Rock, AR 72114-1706, USA. evanswilliamj@exchange.uams.edu

The American Journal of Clinical Nutrition
|August 2, 2000
PubMed
Summary
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Exercise can cause oxidative damage, but training boosts antioxidant defenses. Vitamins C and E may reduce exercise-induced lipid peroxidation, with Vitamin E showing potential benefits for muscle repair in older adults.

Area of Science:

  • Exercise Physiology
  • Nutritional Biochemistry
  • Sports Medicine

Background:

  • Strenuous exercise generates oxygen free radicals, leading to lipid peroxidation and potential muscle injury in unconditioned individuals.
  • Aerobic exercise training enhances the body's antioxidant defense system, notably by increasing superoxide dismutase activity.
  • Oxidative stress from exercise is a significant concern for muscle health and recovery.

Purpose of the Study:

  • To investigate the effects of vitamins C and E on exercise-induced oxidative stress and muscle damage.
  • To explore the potential ergogenic or protective roles of vitamin E, particularly in older adults undergoing eccentric exercise.
  • To examine the association of vitamin E intake with metabolic health markers like glucose tolerance and lipoprotein status.

Main Methods:

Related Experiment Videos

  • Review of studies examining the impact of exercise on oxidative stress markers.
  • Analysis of research on vitamin C and E supplementation in relation to exercise performance and recovery.
  • Observation of changes in neutrophils and creatine kinase activity in response to eccentric exercise and vitamin E.

Main Results:

  • Vitamins C and E can decrease exercise-induced lipid peroxidation, though no direct ergogenic effects were found.
  • Vitamin E supplementation increased circulating neutrophils in older adults performing eccentric exercise, suggesting a role in immune response to muscle damage.
  • Vitamin E intake was linked to improved glucose tolerance, insulin action, and lipoprotein profiles.
  • Vitamin E may enhance skeletal muscle repair, indicated by increased creatine kinase activity.

Conclusions:

  • While vitamins C and E may mitigate some exercise-induced oxidative effects, their ergogenic benefits are not clearly established.
  • Vitamin E shows promise in modulating immune response and potentially aiding muscle repair, especially in older populations experiencing exercise-induced muscle damage.
  • Further research is warranted to explore the synergistic effects of exercise training with vitamins E and C on metabolic and muscle health outcomes.