Home » Speed Training Science » Types of Muscle and Why Only One Matters for Speed
There are three types of muscle in your body:
- cardiac
- smooth
- skeletal
👉 But for running speed…
👉 only one plays a direct role
⚡ The Three Muscle Types
Cardiac Muscle
- found in the heart
- involuntary
- controls heartbeat
Smooth Muscle
- found in organs
- involuntary
- controls internal processes
Skeletal Muscle
- attached to bones
- voluntary
- responsible for movement
💥 This is the one that matters for athletic performance
🧠 Why Skeletal Muscle Matters for Speed
Running, sprinting, jumping…
👉 all depend on skeletal muscle
👉 It controls:
- movement
- force
- coordination
💥 This is the system you train when you’re trying to get faster
🔥 The Key Insight
Not all skeletal muscle behaves the same way.
👉 Some fibers are better suited for:
- endurance
👉 Others are better suited for:
- speed
👉 That’s where fast twitch fibers come in
To understand how these fibers influence speed and performance, this article breaks it down clearly:
➡️ Fast Twitch vs Slow Twitch: What Actually Makes You Faster?
🧠 Speed Depends on More Than Muscle Type
Muscle type matters…
👉 but it’s only part of the picture
Speed also depends on:
- coordination
- timing
- how your muscles work together
💥 Not just what type of muscle you have
If you want to see how this shows up during real movement, this article connects muscle function to running mechanics:
➡️ Running Mechanics Explained: The Rotation System That Makes You Faster
🔁 How This Connects Back to the System
Skeletal muscle creates movement…
👉 but speed comes from how that movement is organized and applied
To see how force is produced through the body and used for speed, this article explains the system at its foundation:
➡️ How Torque Through the Hips Creates Speed, Power, and Athletic Performance
🚀 What This Means for You
If your goal is to get faster:
❌ Don’t focus only on muscle type
✅ Focus on how your muscles:
- contract
- coordinate
- respond during movement
💥 That’s what turns muscle into speed
🚀 Ready to Apply This?
👉 Learn how to apply this system step-by-step:
How to Run Faster: The Complete Guide to Speed, Power and Performance










