What is pure speed?

Pure speed typically refers to an athlete's ability to move the fastest over a given distance without factoring in endurance or stamina. It is characterized by quick bursts of speed, which can be most effectively measured over short distances where anaerobic energy systems are primarily used.

In the context of the provided choices, the definition aligns most closely with the idea of a maximum speed an athlete can achieve, regardless of distance. While there are various definitions and contexts for speed, pure speed is often measured in sprinting events, underscoring the importance of factors like acceleration and top-end speed in the athletic performance. Hence, the correct interpretation is that pure speed signifies the maximum speed an athlete can attain in a sprint, emphasizing peak velocity rather than endurance over greater distances.