Which training method is designed to improve maximum speed and power output?

Plyometric training is specifically designed to enhance maximum speed and power output, making it the correct choice for this question. This training method focuses on explosive movements that utilize the stretch-shortening cycle of muscle action, which is instrumental in developing both power and speed. Exercises such as jump squats, box jumps, and depth jumps are common in plyometric workouts. These activities condition the muscles to exert maximum force in a short amount of time, thereby improving performance in activities requiring speed and explosive strength.

In contrast, cardiovascular training primarily enhances aerobic capacity and endurance, which are important for prolonged activities but do not specifically target maximum speed or power. Skills training focuses on honing techniques needed for sports-specific movements, enhancing proficiency but not directly working on speed or power. Agility training emphasizes quick, controlled movements and the ability to change direction efficiently, which can aid in performance but does not inherently focus on maximizing speed and power output like plyometric training does.