Which activity primarily utilizes the creatine phosphate energy system?

The creatine phosphate energy system, also known as the phosphagen system, primarily supports high-intensity, short-duration activities that require quick bursts of energy. This system relies on stored creatine phosphate in the muscle cells to rapidly regenerate adenosine triphosphate (ATP), which is the energy currency of the cell.

Activities such as throwing, hitting, jumping, and sprinting predominantly utilize this energy system because they involve maximal effort that lasts for a very short period, typically around 10 seconds or less. The quick and explosive nature of these movements means that the body needs immediate energy, and the creatine phosphate system is perfectly equipped to provide that.

In contrast, swimming can involve both aerobic and anaerobic components depending on the distance and intensity of the swim, while long-distance running relies more on aerobic pathways for energy, and cycling over longer durations also falls under aerobic metabolism. Therefore, the correct activity that aligns with the use of the creatine phosphate system is primarily centered around explosive, high-intensity actions, making throwing, hitting, jumping, and sprinting the activities that best fit this energy system.