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Magnesium, zinc, and chromium nutriture and physical activity.

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Magnesium, zinc, and chromium nutriture and physical activity.

Am J Clin Nutr. 2000 Aug;72(2 Suppl):585S-93S

Authors: Lukaski HC

Abstract

Magnesium, zinc, and chromium are mineral elements required in modest amounts to maintain health and optimal physiologic function. For physically active persons, adequate amounts of these micronutrients are needed in the diet to ensure the capacity for increased energy expenditure and work performance. Most physically active individuals consume diets that provide amounts of magnesium and zinc sufficient to meet population standards. Women tend to consume less of these minerals than is recommended, in part because they eat less food than men. Inadequate intakes of magnesium and zinc have been reported for participants in activities requiring restriction of body weight. Dietary chromium is difficult to estimate because of a lack of appropriate reference databases. Acute, intense activity results in short-term increases in both urine and sweat losses of minerals that apparently diminish during recovery in the days after exercise. Supplemental magnesium and zinc apparently improve strength and muscle metabolism. However, evidence is lacking as to whether these observations relate to impaired nutritional status or a pharmacologic effect. Chromium supplementation of young men and women does not promote muscle accretion, fat loss, or gains in strength. Physically active individuals with concerns about meeting guidelines for nutrient intake should be counseled to select and consume foods with high nutrient densities rather than to rely on nutritional supplements. The indiscriminate use of mineral supplements can adversely affect physiologic function and impair health.

PMID: 10919964 [PubMed – indexed for MEDLINE]

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Filed Under: Journal Publications Tagged With: Chromium, Magnesium, Zinc

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READ FULL ARTICLE HERE (PDF)

Published in 1899

The Physiological Role of Mineral Nutrients

Author: Loew, Oscar, b. 1844 Volume: no.18 Subject: Plant physiology; Plants Assimilation; Minerals Publisher: Washington : G.P.O. Year: 1899 Possible … Read this book online

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