Anatomy — Plyometric

This is the most critical split-second in the story—the moment your downward movement stops but your upward movement hasn't yet begun.

Now, the stored energy is unleashed in a massive, coordinated strike. CURRENT CONCEPTS OF PLYOMETRIC EXERCISE - PMC Plyometric anatomy

: If you linger here for more than about 0.25 seconds, the "story" ends in a flop. The elastic energy stored in your tendons dissipates as heat, and the muscle spindles' urgent signal fades away. This is the most critical split-second in the

: Your tendons—especially the massive Achilles tendon —act like high-tension springs. They don't just stay still; they deform and stretch, soaking up kinetic energy and storing it as elastic potential energy . Chapter 2: The Crossroads (The Amortization Phase) The elastic energy stored in your tendons dissipates

: As your quads and calves lengthen to absorb the impact, specialized sensory receptors called muscle spindles act as tripwires. They sense the rapid stretch and immediately send an urgent signal to your spinal cord: "We're stretching too fast—contract now!" .