Articles : Effects of Exercise on Some Vitamin Status in Blood and Liver of High fat or Normal Diet Fed Rats |
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Abstract |
S ome vitamins have received much attention as a factor affecting exercise performance and fat metabolism. To investigate the effects of a high fat diet and/or exercise on vitamin status, young Sprague-Dawley rats were fed an AIN-76 diet or a modified high-fat AIN-76 diet, supplemented with 35% corn oil, for 30-days. During the 30-day period, half of the animals in each dietary group were exercised on a treadmill for 90 minutes per day. Total retinol and α-tocopherol concentrations in liver and ascorbic acid in plasma were determined. We found that a high-fat diet decreased plasma ascorbic acid concentration in the non-exercised animals, however, there were no changes in the exercised animals. Total liver retinol and α-tocopherol concentrations in the exercised animals on both normal and high-fat diets showed significantly higher values than those of the non-exercised animals. The data indicated that a assist high-fat diet has some decreasing effect on blood ascorbic acid level but exercise can make a recovery from this effect. The data also suggests that exercise has increasing effects on liver retinol and -tocoperol concentrations. |
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