Journal
MOLECULAR AND CELLULAR BIOCHEMISTRY
Volume 280, Issue 1-2, Pages 135-138Publisher
SPRINGER
DOI: 10.1007/s11010-005-8421-y
Keywords
antioxidant; brain; chronic exercise training; lipid peroxidation; vitamin C supplementation
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The purpose of this study was to ascertain whether vitamin C supplementation during chronic exercise training alters rat brain antioxidant content. Female Wistar albino rats were exercised on a treadmill for 30 min/day for 6.5 weeks and were administered daily intraperitoneal injections of vitamin C (20 mg/kg). After the training period, chronically exercised rats showed no significant changes in total brain thiobarbituric acid reactive substances (TBARS) levels. In contrast, rats supplemented with vitamin C during the training period showed significantly elevated brain TBARS levels. If such results were extrapolated to man, where vitamin supplementation is a common practice, this would indicate that vitamin C supplementation may not protect brain tissue against exercise-induced oxidative damage, in such circumstances, this water-soluble antioxidant behaves as a pro-oxidant.
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