Which term is used for the energy system that supports high-intensity, short-duration exercises like sprinting?

The energy system that supports high-intensity, short-duration exercises, such as sprinting, is known as the ATP-PC system. This system relies primarily on adenosine triphosphate (ATP) and phosphocreatine (PC) stored in the muscles to quickly generate energy for activities that require immediate and explosive bursts of power.

During sprinting, the body requires a rapid supply of energy that exceeds the ability of the aerobic system to provide fuel. The ATP-PC system can rapidly replenish ATP without the need for oxygen, making it ideal for high-intensity efforts that last from about 1 to 10 seconds. After this period, the body starts to transition to other energy systems as the stored ATP and phosphocreatine levels begin to deplete.

In contrast, the aerobic system, which is commonly associated with prolonged activities like distance running, relies on oxygen and is not efficient for short bursts. The glycolytic system, while it does support high-intensity exercise, primarily comes into play after the ATP-PC system is exhausted and is better suited for activities lasting from around 10 seconds up to several minutes. The oxidative system is designed for long-duration activities and is not effective for short, explosive actions like sprinting. Thus, the