Endurance exercise with reduced muscle glycogen content influences substrate utilization and attenuates acute mTORC1- and autophagic signaling in human type I and type II muscle fibers.

In addition, the present study shows that while this holds for both fiber types, it is most obvious for the type I fibers where a highly significant correlation was found between initial muscle glycogen levels and the utilization of glycogen during exercise (Fig. 5 C).

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