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자료유형
학술저널
저자정보
저널정보
한국독성학회 Toxicological Research Journal of Toxicology and Public Health Vol.18 No.3
발행연도
2002.9
수록면
215 - 226 (12page)

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Acute or repeated physical exercise affects a large number of physiological parameters including hemodynamics, respiration, pH, temperature, gastrointestinal functions and biotransformation, which determine the pharmacokinetics of drugs and chemicals The rate and the amount of a chemical reaching the active site are altered by physical exercise, which results in significant changes in pharmacological/toxicological activity of the chemical. This aspect of physical exercise has vast implications in therapeutics and in safety evaluation, particularly for chemicals that have a low margin of safety. However, there appears to be a wide inter- and intraindividual variations in the effects of physical exercise depending on the duration, intensity and type of exercise, and also on the properties of each chemical. It is suggested that more studies need to be done to determine which factor(s) plays a major role in the disposition of chemicals in human/animals performing physical exercise. Certain chemicals induce severe toxicity due to metabolic conversion to reactive intermediate metabolites. It is suggested that repeated exercise may enhance the free radical scavenging system by increasing the activity of antioxidant enzymes. This area of research remains to be explored to elucidate the interaction of exercise and chemicals on the antioxidant system.

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