Plyometrics Create Stiff Tendons. Just Not as Fast as You Think
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Plyometrics Create Stiff Tendons. Just Not as Fast as You Think
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Summary
Plyometrics are everywhere. Every gym program, every pre-season block, every speed development plan has them. But there's a catch most coaches never mention — the tendon adaptation everyone is chasing doesn't show up in weeks. It takes years.
Four years of tracking elite jumpers revealed that tendon stiffness — a key marker of injury resilience and force transfer — only meaningfully increases with sustained, long-term plyometric loading. Short blocks don't cut it. The muscle gets stronger. The nervous system adapts. But the tendon stays behind until the cumulative loading finally crosses the threshold.
This episode breaks down what the data actually shows, why tendon stiffness matters more than most coaches realize, and what long-term plyometric programming needs to look like if the goal is genuinely protecting and developing athletes — not just checking a box in the pre-season plan.