Shoulder extensors complete the arm cycle in running. Learn how backward arm movement supports balance, coordination, and speed performance.
biomechanics running
SPEED TRAINING SCIENCE: Why Most Methods Fail (And What Actually Works)
Most athletes train hard but don’t get faster. This article explains the science behind speed training, including muscle contraction, fast twitch fibers, and why traditional methods often fail to improve speed.
Why Getting Bigger Can Actually Make You Slower (The Science Explained)
Many athletes believe getting bigger will make them faster—but that’s not always true. Learn how hypertrophy affects muscle function, contraction speed, and why size alone doesn’t translate into real performance.
Spine Rotator Muscles for Running Speed: How Rotation Connects Your Entire System
Spine rotators don’t create speed—they connect your system. Learn how rotation transfers force and improves coordination for faster running.
What Actually Creates Force in Running? (And Why Most Athletes Get It Wrong)
Force is one of the most misunderstood aspects of running. Many athletes think strength alone creates speed, but force depends on how your system applies and transfers energy. Learn what actually creates force in running and how to improve it.
Why Faster Turnover Doesn’t Always Make You Faster (The Stride Rate Myth)
Many runners believe increasing stride rate will make them faster. But stride rate is not the cause of speed—it’s the result of how your system applies force. Learn why forcing faster turnover can slow you down and what actually improves stride rate.
The Real Cause of Overstriding (And Why It’s Not What You Think)
Many athletes try to fix overstriding by changing where the foot lands. AQ explains why overstriding may be the visible outcome of deeper contributor limitations involving the pushing leg, swing leg, arms, torso, and strength balance.
What Controls Ground Contact Time in Running? (And Why Quick Feet Aren’t the Answer)
Most athletes assume shorter ground contact time creates faster running. AQ explains why contact time may often be an outcome of contributor relationships already influencing the next step before the foot reaches the ground.
Why Your Foot Strike Isn’t Making You Faster (And What Actually Does)
Many athletes focus on foot strike when trying to run faster. AQ explains why foot strike is often revealing what the Sprint System is doing rather than creating speed itself. Learn what influences foot strike, why it changes as speed improves, and what actually helps athletes run faster.
What Are Ground Mechanics? (And Why Your Foot May Not Be the Problem)
Ground mechanics are not just about your foot strike. They are about how your entire body applies force into the ground. Learn why the push leg, swing leg, arms, timing, and strength balance all influence how efficiently you run—and why fixing the foot is often treating the symptom instead of the cause.
How to Improve Strength Balance for Maximum Running Speed
Most athletes think faster running speed depends mainly on producing more force. AQ explains why speed is actually governed by strength balance — the ability of the entire sprint system to support aggressive movement while remaining rotationally balanced. Learn why the pushing leg, swing leg, arms, torso, and timing between steps all help determine whether speed can continue rising successfully.
Running Form Mistakes That Are Slowing You Down (And How to Fix Them)
Most athletes try fixing visible running-form mistakes directly. AQ explains why many movement problems may actually reflect deeper breakdowns involving timing between steps, force transfer, and contributor interaction during running.
Stride Length vs Stride Frequency: What Really Makes You Faster?
Most athletes think sprint speed depends on either longer strides or faster turnover. AQ explains why both may improve together when the sprint system organizes aggressive movement more successfully.
Push Phase vs Swing Phase: The Missing Half of Running Speed
Most athletes treat the swing phase like recovery. AQ explains why the swing leg may actively contribute to sprint speed during the current stride itself.
Arm Swing Mechanics in Sprinting: Why Your Arms Control Your Speed
What if your arms do more than balance your running? AQ explains how arm swing actively contributes to timing, aggressive movement, and whole-system sprint continuity at higher sprint speeds.
