Rethinking sprint performance through mechanics, timing and constraints

Sprint acceleration accounts for more than half of 100m sprint race performance.
And yet, in everyday coaching practice, it is still often treated as a preparatory phase — something to “get through” before real sprinting begins.

Strength improves. Gym numbers go up. Exercises look solid.
But when athletes return to the track, the first steps often look frustratingly similar. Acceleration remains slow, ground contact times stay long, and performance stagnates.

This disconnect is not a matter of motivation or effort.
It is a model problem.

Acceleration is not separate from max velocity

A common mistake in sprint training is treating acceleration, maximal velocity and technique as separate qualities. In reality, sprinting is a continuous mechanical process.

Acceleration is simply the first expression of the same system that will later determine upright sprint speed. What happens in the first few steps directly s...

Rethinking the “Glute Problem” in Sprint Acceleration

Have you ever had this happen?

You work really well with an athlete in the gym.
Strength improves, loads go up, exercises look solid.
Numbers are better, the athlete feels stronger.

Then you go back to the track…
and in the first few steps, almost nothing changes.

Acceleration is still slow, ground contact times remain high, and sooner or later some hamstring tightness starts to appear.
And the obvious thought comes up:

How is this possible? They are clearly stronger.

This scenario is far more common than we like to admit.

And it’s usually at this point that a very natural reflex kicks in:
Maybe they’re still not strong enough.

So we add more load.
More glute work.
More strength.

But what if this is the wrong question?

Is it really a strength problem?

In early acceleration (especially in the first 5–10 meters), performance is rarely limited by force production alone.
Much more often, what actually limits the athlete is: