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Ergogenic effect of dietary L-carnitine and fat supplementation against exercise induced physical fatigue in Wistar rats

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Abstract

L-carnitine (LC) plays a central role in fatty acid metabolism and in skeletal muscle bioenergetics. LC supplementation is known to improve physical performance and has become widespread in recent years without any unequivocal support to this practice. A scientific-based knowledge is needed, to understand the implications of LC supplementation on physical fatigue. In current study, we have explored synergistic effects of dietary LC and fat content against physical fatigue in rats. Ninety male Wistar rats were supplemented with different concentrations of LC (0.15, 0.3, and 0.5 %) and fat content (5, 10, and 15 %) through diet in different combinations. Our results elucidated that LC (0.5 %) along with 10 and 15 % fat diet supplemented rats showed significant ergogenic effect. The swimming time until exhaustion was increased by ~2- and ~1.5-fold in rats fed with 10 and 15 % fat diet containing LC (0.5 %). LC supplementation improved the energy charge by increasing the levels of ATP, tissue glycogen, reduced GSH, plasma triglyceride, plasma glucose levels, and enzymatic antioxidant status, i.e., superoxide dismutase, catalase, and glutathione peroxidase. LC supplementation also significantly reduced lipid peroxidation, lactic acid, plasma urea nitrogen, creatinine, creatinekinase, and lactate dehydrogenase levels in various tissues compared to its respective control group. Thus the present study indicates that LC ameliorates the various impairments associated with physical endurance in rats.

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Acknowledgments

The authors are thankful to Dr. Farhath Khanum, Head, Biochemistry and Nanosciences Discipline and Dr. H.V. Batra, Director, Defence Food Research Laboratory, for their constant support and encouragement during the period of the study.

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  1. Biochemistry and Nanosciences Discipline Defence Food Research Laboratory, Siddarthanagar, Mysore, 570011, India

    M. D. Pandareesh & T. Anand

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  1. M. D. Pandareesh
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  2. T. Anand
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Correspondence to T. Anand.

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Pandareesh, M.D., Anand, T. Ergogenic effect of dietary L-carnitine and fat supplementation against exercise induced physical fatigue in Wistar rats. J Physiol Biochem 69, 799–809 (2013). https://doi.org/10.1007/s13105-013-0256-5

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  • DOI: https://doi.org/10.1007/s13105-013-0256-5

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