Understanding Duty Factor- The best way to deconstruct sprinting is...
Sprint Science@spikesonly
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Jan 07, 2026
~1 min read
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Understanding Duty Factor-
The best way to deconstruct sprinting is to get into engineering, as that wins; the rest is sport science fluff that sells online courses.
Your goal is to make sure your athletes are productive and that means work rates while sprinting.
The best way to deconstruct sprinting is to get into engineering, as that wins; the rest is sport science fluff that sells online courses.
Your goal is to make sure your athletes are productive and that means work rates while sprinting.
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The first step, pun intended, is to consider the big picture in terms of an athlete's weight and height. Taller means longer steps, heavier means longer ground contact times. Focus on frequency regardless, as step length isn't really modifiable unless they are weak.
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Next is tangential foot speed. Getting the knee up is easy; getting the foot out and snatched back fast is hard.
If you have poor backswing velocity and form you will be slower and risk injury due to excessive braking forces.
Cracking the whip needs a wind-up.
If you have poor backswing velocity and form you will be slower and risk injury due to excessive braking forces.
Cracking the whip needs a wind-up.
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Back to frequency and duty factor.
Master this chart; if you are stuck with a speed and can't improve frequency, focus on the foot path and trace the problem to forces, coordination, and preparation. Unleash the beast from the cage or build a beast, but be productive with time.
Master this chart; if you are stuck with a speed and can't improve frequency, focus on the foot path and trace the problem to forces, coordination, and preparation. Unleash the beast from the cage or build a beast, but be productive with time.
