Which factor is most important when deciding to progress a patient from isolated strengthening to plyometric training in lower-extremity rehab?

• A. Demonstrated adequate strength, ROM, pain-free function, and sports-specific control
• B. Time since injury alone
• C. Swelling alone
• D. Coach's opinion alone

Answer: (A)

Progression to plyometric training requires the leg to be clearly ready for high-impact, rapid loading. The best indicator is a combination of objective readiness: muscles and tendons must be strong enough to produce and absorb the forces; joints need enough range of motion to allow proper technique and avoid compensations; there should be no pain with movement, indicating the tissue can tolerate loading without irritability; and the neuromuscular system must show sport-specific control, meaning the movement patterns, landing mechanics, and deceleration strategies are stable enough for dynamic tasks.

This is why demonstrated adequate strength, full or sufficient range of motion, pain-free function, and sport-specific control is the strongest criterion. Time since injury, swelling, or a coach’s opinion alone do not reliably reflect the patient’s readiness to handle plyometric stresses, since healing timelines and subjective factors can vary and don’t guarantee safe progression.