What is the term for the breakdown of stored glycogen during exercise?

The breakdown of stored glycogen during exercise is known as glycogenolysis. This process involves the conversion of glycogen, which is a polyglucose stored primarily in the liver and muscles, into glucose molecules that can be readily used for energy during physical activity. When the body engages in exercise, especially at high intensities, it requires quick and accessible energy, which is why glycogen stores are mobilized through glycogenolysis.

This process is critical during the initial stages of exercise when the body shifts from relying on stored energy substrates to utilizing the energy provided by glucose. Hormones such as glucagon and epinephrine stimulate glycogenolysis, ensuring that muscle cells receive the glucose they need to sustain physical activity.

Understanding glycogenolysis is essential for coaches and nutrition professionals as it highlights the importance of maintaining adequate glycogen stores through diet and training, as well as the timing of carbohydrate intake in relation to exercise performance and recovery. This knowledge helps in crafting tailored nutritional strategies that support athletic performance and overall wellness.