Nutrition and exercise introduction and overview

Article Abstract:

Antioxidant supplements can correct exercise's deleterious physiological effects, such as the production of free radicals in skeletal muscles. It is necessary to evaluate the benefits and adverse effects of physical exertion in order to determine the recommendable degree of exercise. Similarly, an evaluation of dietary modifications is needed in order to circumvent potential hazards the exercise regimen poses. Although the decrease in food intake has been found to have beneficial effects on longevity, exercise effects on life span is still unknown. The proceedings of American Institute of Nutrition's 1991 symposium on Nutrition and Exercise is summarized.

Conferences, meetings and seminars, Dietary supplements, American Institute of Nutrition

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Exercise, oxidative damage and effects of antioxidant manipulation

Article Abstract:

Exercise promotes the generation of free radicals in muscle and other tissues leading to membrane damages as a result of lipid peroxidation. This deleterious consequence of strenuous activity is highly reduced by antioxidant nutrients such as vitamins C and E and beta-carotene. Coenzyme Q10 is also a potentially strong antioxidant. In rats, exercise training leads to elevated protein carbonyl levels in muscles but not in liver. This indicates that careful examination of oxidative damages in various tissues has to be undertaken to properly evaluate the harmful effects of exercise and the beneficial effects of antioxidants.

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A current perspective on nutrition and exercise

Article Abstract:

Heavy exercise promotes free radical generation which leads to peroxidation of fats and damage to tissues. Inhalation of pollutants and catecholamine oxidation during exercise or strenuous outdoor activity promote free radical formation while too much exertion leads to tissue damage. This deleterious effect of exercise can be minimized by antioxidant nutrients such as beta-carotene, and vitamins E and C. A combination of moderate exercise, balanced diet and adequate intake of antioxidant nutrients will thus aid in chronic disease prevention and enhance personal health.

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