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Carbohydrate, Protein Combo Best for Glycogen Levels

Carbohydrate, Protein Combo Best for Glycogen Levels

AUSTIN, Texas--Researchers from the University of Texas, Austin, investigated whether a carbohydrate/protein supplement would be more effective in restoring muscle glycogen after exercise compared to a carbohydrate supplement or caloric equivalent. In a study appearing in the October Journal of Applied Physiology (93, 4:1337-44, 2002) (, seven subjects received three different regimens at 10 minutes and two hours postexercise: 1) 80 g of carbohydrates and 28 g of protein; 2) 80 g of carbohydrates and 6 g of fat; or 3) 108 g of nutrients that were the caloric equivalent of the carbohydrate/protein supplement and 6 g of fat.

The study's authors, led by John Ivy, Ph.D., reported that while exercise significantly reduced muscle glycogen stores, glycogen was significantly recovered after four hours via the carbohydrate/protein supplement.

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