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F — Fascia

How does force travel? Through the myofascial lines — primarily the Spiral Line (forehand) and Back Line (backhand).


The Rule

Spiral line for forehand, Back line for backhand. Connect the chain, don't muscle it.

Why It Matters

  • Fascia transmits force faster than muscle contraction
  • Elastic energy storage in fascial lines = free power
  • Disconnected fascia = arming the ball = injury

Key Cue

"Spiral line & Back line."

Training Drill

  1. Spiral line activation — diagonal reach with rotation
  2. Back line stretch — forward fold with straight legs
  3. Figure-8 shadow — feel the lines loading/unloading

Common Errors

  • Muscling with arm only: Bypasses fascial transmission
  • Tight fascia restricting rotation: Needs mobility work
  • Ignoring the non-dominant side: Breaks the line continuity

Chapter 10: Fascia & Proprioception →