Which two strength qualities are focused in plyometrics?

• A. Endurance Strength and Maximal Strength
• B. Strength-Speed (<250 m/s) and Speed-Strength (<200 m/s)
• C. Explosive Strength and Brute Strength
• D. Flexibility and Mobility

Answer: (B)

Plyometrics focus on how quickly you can generate force, using the stretch-shortening cycle to turn a rapid forearm or leg eccentric action into a powerful concentric push. This emphasis on speed of force production is captured by two strength qualities: strength-speed and speed-strength. Strength-speed means producing substantial force while moving at relatively high speeds, and speed-strength refers to generating very high force at even higher movement velocities. Plyometric training aims to boost explosive power and the rate of force development, rather than just raw maximal strength or muscular endurance. Choices that emphasize endurance, pure maximal strength, or flexibility don’t align with what plyometrics specifically target.