Force & Expression

The Complete Guide to Athletic Development

*Introductory price expires Monday*

Speed Kills gave you a sprint framework.

This is everything else.

Most books give you information. This one gives you access to how I think.

After nearly twenty years coaching athletes from high school through professional careers, the most valuable thing I can offer isn’t a program. It’s the framework behind every decision I make. Force & Expression is that framework – on paper, in full, for the first time.

This isn’t a program. It’s the thinking behind the programming.

Twelve chapters covering every physical quality that drives athletic performance – how each one is developed, how they interact, how to organize them, and how to identify which one is actually limiting the athlete in front of you. Plus a full chapter on performance bottlenecks with real case studies from real athletes coached across real careers.
Most coaching content is built to stop a scroll. This was built to change how you think.

What’s Inside

What Is Strength?

Force, impulse, and rate of force development. The strength spectrum from maximal force to reactive ability and how to diagnose where an athlete’s limiting factor actually lives.

What Each Training Means Actually Develops

Sprinting, plyometrics, isometrics, eccentrics, ballistic work, maximal strength — the specific adaptation each one drives, which tissue it occurs in, and how that changes your sequencing decisions.

Plyometrics
The forces involved, what the research actually shows they develop, the extensive-to-intensive spectrum, and how to program total contact load without creating the overuse injuries that end seasons.

Acceleration and Max Velocity

The mechanical realities underneath both phases, why they demand completely different things from the athlete, and what coaches consistently get wrong about each.

Programming Architecture

Block periodization and why it doesn’t fully apply to most athletes. Vertical integration in practice. Phase themes, decision-making, and a session construction model you can apply to any athlete in any phase.

What Actually Limits Performance

Every bottleneck — force production, stiffness, neural, psychological, technical, fatigue and recovery — with the diagnostic questions that point you toward the right answer and two extended case studies from athletes coached across years and careers.

Who This Is For

Coaches who have read Speed Kills and want the full picture behind it.

Strength and conditioning coaches who want a comprehensive framework they can apply across sports and populations. Not another drill library. Not another template.

High school and college coaches responsible for physical development who want to do it with more precision and less guesswork.

Sport coaches who want to understand what physical preparation actually is and how to evaluate whether it is being done well.

This is not for beginners. It is for coaches who already have a foundation and want a framework that makes it more coherent.

About the Author
Fred Duncan has been coaching athletes in a facility every day since 2007. He has worked with athletes across the NFL, NHL, NCAA, and EPL — from middle school through professional careers.
Everything in this book came from a real facility with real athletes under real constraints.

One-time payment. Immediate download. Lifetime access.

If you are coaching athletes and still building your framework from free content, this is what replaces that.

Get Force & Expression.