To support the development of physical fitness, athletes need to understand the importance of fitness testing. The ability to follow the correct procedures and how to interpret the results is vital to both the athlete and the coach.

A highly powerful athlete, such as a weight lifter or hammer thrower, would have a very high peak power, demonstrating a high anaerobic power. However, they wouldn’t be able to sustain the effort, and would have a large decline in their power output over time. This reflects their ability to use the ATP-PC energy system