Which aerobic training method uses high-speed intensity work followed by recovery periods?

Long Interval Training is indeed the correct choice for this question. This training method involves alternating between periods of high-intensity effort and recovery. The structure of Long Interval Training typically includes work intervals that are longer than those in short interval training but maintain an emphasis on sustained aerobic capacity.

The high-speed intensity work pushes the athlete's cardiovascular and muscular systems, allowing them to improve their endurance and performance. The subsequent recovery periods are crucial as they provide an opportunity for the body to clear lactate and replenish energy stores, enabling the athlete to maintain a high level of exertion in future intervals.

This method is particularly effective for an athlete looking to enhance their overall aerobic fitness, as it combines the benefits of both intense exertion and recovery, maximizing training efficiency. In contrast, Continuous Training involves steady-state exercise without significant rest, Short Interval Training typically entails brief bursts of very high intensity followed by relatively short rest intervals, and Plyometric Training focuses on power and explosive movements rather than sustained aerobic effort.