The Q-V-ROOT-8-45-Impulse-Jin System¶
The complete biomechanical framework for consistent, powerful tennis.
You were taught tennis as tips. This teaches it as a system.¶
| What you get | What it replaces |
|---|---|
| 12 Variables β One integrated chain | Disconnected tips |
| 30 Chapters β Visual, biomechanical, actionable | Guesswork |
| 5 Strokes β Forehand, 1HBH, 2HBH, Serve, Return | Incomplete coverage |
| 0 Guesswork β Every cue has a biomechanical reason | "Just feel it" |
The CORE Chain¶
Quiet Eye β Vestibular β Rooting β Fascia β Proprioception β Tensegrity β SSC β Figure-8 β 45Β° Plane β Brake β Pulse β Jin
Every variable is a link. Break one, and the chain fails. Master all twelve, and the stroke becomes inevitable.
Start Here¶
| Your Goal | Start Here |
|---|---|
| New to the system | The CORE Map β |
| Diagnose your stroke | Find Your Broken Link β |
| Train the system | Join the Lab β |
| See the visuals | Visual Library β |
The Five Strokes, One System¶
| Stroke | Core Principle | Key Variable |
|---|---|---|
| Forehand Push | Spiral Line pressurization | 8 (Figure-8) |
| 1H Backhand Saber | Back Line + Lat stretch | ROOT |
| 2H Backhand Hybrid | Push + Saber blend | 45Β° |
| Serve | Isolated kinetic chain | BRAKE |
| Return | Hua Jin - absorb & redirect | Q |
The Book¶
30 Chapters covering every variable, every stroke, every pattern.
| Part | Chapters | Focus |
|---|---|---|
| I: Foundation | 1-7 | The Problem, Grip, Contact Point, Face Angle, Takeback, Tension, CORE |
| II: Sensory-Motor | 8-11 | Quiet Eye, Vestibular, Fascia/Proprioception, Tensegrity |
| III: Engine | 12-15 | SSC, Figure-8, 45Β° Plane, Brake & Pulse |
| IV: Expression | 16-18 | Jin, Hu Thuc, Rooting |
| V: Strokes | 19-25 | Forehand, 1HBH, 2HBH, Serve, Return, Volley, Touch |
| VI: Strategy | 26-27 | Court Geometry, Patterns |
| VII: Complete | 28-30 | Mental, Physical, Unified System |
Visual Library¶
Every chapter has 5 custom diagrams/photos (150+ total):
- Infographics: CORE loop, tensegrity tent, figure-8 paths
- Biomechanical: 3D contact zones, kinetic chains, force vectors
- Photos: Grip comparisons, contact points, footwork sequences
- Diagnostics: Fault trees, fault-signal cards, self-check tools
Train the System¶
| Option | What You Get |
|---|---|
| Free | CORE Diagnostic, Start Here guide, Visual Library access |
| Member | Full chapter access, drills library, video breakdowns, community |
| Coaching | 1:1 biomechanical analysis, custom program, AI Coach access |
About Henry Pham Duc¶
Researcher | Coach | System Builder
- 20+ years tennis + Tai Chi integration
- Creator: Q-V-ROOT-8-45-Impulse-Jin CORE System
- Author: Unified Tennis Handbook (30 chapters, 150+ diagrams)
- Mission: Replace "tips" with biomechanical truth
The court doesn't lie. The ball doesn't care about your intentions. It only responds to physics. This system makes physics work for you.