Anatomy — Plyometric

: 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!" .

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

: 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) : As your quads and calves lengthen to

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