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  • Title: Exercise and a High Fat Diet Synergistically Increase the Pantothenic Acid Requirement in Rats.
    Author: Takahashi K, Fukuwatari T, Shibata K.
    Journal: J Nutr Sci Vitaminol (Tokyo); 2015; 61(3):215-21. PubMed ID: 26226957.
    Abstract:
    It is thought that both exercise and dietary composition increase the utilization of, and thus the requirement for, certain water-soluble vitamins. However, there have been no studies evaluating the combined impacts of exercise and dietary composition on vitamin utilization. In this experiment, rats were fed a pantothenic acid (PaA)-restricted (0.004 g PaA-Ca/kg diet) diet containing 5% (ordinary amount of dietary fat) or 20% fat (high fat), and were forced to swim until exhaustion every other day for 22 d. PaA status was assessed by urinary excretion, which reflects body stores of water-soluble vitamins. The urinary excretion of PaA in rats fed a 5% fat diet was not affected by swimming (5% fat + non-swimming vs. 5% fat + swim; p>0.05). Excretion of PaA was decreased by the high-fat diet (5% fat + non-swim vs. 20% fat + non-swim; p<0.05) and synergistically decreased by exercise (20% fat + non-swim vs. 20% fat + swim; p<0.05). There was a significant interaction between exercise and a high-fat diet. Plasma PaA concentrations showed changes similar to those seen for urinary excretion. The experiment was then repeated using rats fed a PaA-sufficient (0.016 g PaA-Ca/kg diet) diet, and PaA excretion was again synergistically decreased by the combination of exercise and a high-fat diet (p<0.05). These results suggest that the combination of exercise and a high-fat diet synergistically increases the requirement for PaA.
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