Fig. 4.

Schematic diagram of glycogen metabolism during exercise and recovery. The relative contributions of enzyme activation or inhibition to glycogen degradation or accumulation are not drawn to scale. Rather the intention is that phosphorylase activation is by far the most important factor for glycogen degradation during exercise, whereas both activation of glycogen synthase (GS) and inhibition of phosphorylase are important components in glycogen accumulation during recovery. See text for additional details