Effects of postexercise carbohydrate-protein feedings on muscle glycogen restoration

Increases in muscle glycogen concentrations after exercise were 118 mmol/kg dry weight for all feeding types.

• Three different postexercise feeding compositions were tested: 100% carbohydrate, 70% carbohydrate-20% protein-10% fat, and 86% carbohydrate-14% amino acid.
• All feedings were given eucalorically, at a rate of 1.0 g/kg body weight per hour, during a 4-hour muscle glycogen restoration period.
• No differences in muscle glycogen restoration were observed among the different feeding compositions.
• Serum glucose and insulin responses remained consistent across all three feeding types throughout the restoration period.
• These findings indicate that adding protein or amino acids does not enhance muscle glycogen restoration after exhaustive exercise.

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