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Related Experiment Videos

Electron spin resonance spectroscopy, exercise, and oxidative stress: an ascorbic acid intervention study.

T Ashton1, I S Young, J R Peters

  • 1School of Applied Sciences, University of Glamorgan, Pontypridd, Wales, CF37 1DL, United Kingdom. tashton@glam.ac.uk

Journal of Applied Physiology (Bethesda, Md. : 1985)
|December 22, 1999
PubMed
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Acute ascorbic acid supplementation effectively prevents exercise-induced oxidative stress. This study shows vitamin C reduces harmful free radicals and lipid peroxidation following strenuous physical activity in healthy individuals.

Area of Science:

  • Exercise Physiology
  • Biochemistry
  • Nutritional Science

Background:

  • Strenuous exercise elevates reactive oxygen species (ROS), leading to oxidative stress.
  • Oxidative stress can damage cellular components like membrane phospholipids.
  • Understanding interventions to mitigate exercise-induced oxidative stress is crucial for athlete health and performance.

Purpose of the Study:

  • To investigate the impact of acute ascorbic acid (vitamin C) supplementation on exercise-induced free radical production.
  • To assess whether vitamin C can prevent oxidative damage markers post-exercise.

Main Methods:

  • Healthy subjects underwent strenuous exercise in a controlled setting.
  • Measurements included alpha-phenyl-tert-butylnitrone adducts, lipid hydroperoxides, and malondialdehyde levels.

Related Experiment Videos

  • Data were collected both before and after exercise, with and without prior ascorbic acid supplementation.

    • Main Results:

    • In the control phase, exercise significantly increased free radical adducts, lipid hydroperoxides, and malondialdehyde.
    • Following ascorbic acid supplementation, no significant increases in these oxidative stress markers were observed post-exercise.
    • Ascorbic acid supplementation effectively blunted the exercise-induced rise in oxidative stress indicators.

    Conclusions:

    • Acute ascorbic acid supplementation demonstrates a protective effect against exercise-induced oxidative stress.
    • Vitamin C may serve as a viable nutritional strategy to combat exercise-related cellular damage.
    • Further research could explore optimal dosages and long-term effects of vitamin C on athletic performance and recovery.