Muscle glycogen resynthesis during recovery from cycle exercise: no effect of additional protein ingestion

Glycogen resynthesis rates during recovery were 52 ± 7 mmol kg dry muscle(-1) h(-1) for carbohydrate and protein ingestion and 48 ± 5 mmol kg dry muscle(-1) h(-1) for carbohydrate alone.

• Both carbohydrate and carbohydrate/protein ingestion increased arterial glucose concentration compared to water ingestion during recovery.
• Glucose concentration was 1-1.5 mmol/l higher in the first hour with carbohydrate ingestion compared to carbohydrate/protein ingestion.
• Leg glucose uptake was stable at 0.9 mmol/min with carbohydrate/protein and carbohydrate, while it decreased to zero at 3 hours with water ingestion.
• Insulin levels remained stable at 70, 45, and 5 mU/l for carbohydrate/protein, carbohydrate, and water ingestion, respectively.
• Glycogen resynthesis rates decreased over time, with no significant difference between carbohydrate/protein and carbohydrate ingestion.

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