Runners struggle to improve speed because the traditional speed formula is incomplete. Without accounting for this key element, cadence and stride length cannot explain or produce speed.

Andre De Grasse’s plateau exposes a recurring flaw in sprint training: isolated physical qualities rise, yet speed remains unchanged. His case highlights the deeper mechanism most approaches overlook.

At just 17, Gout Gout runs with stride lengths rivaling Usain Bolt. Yet he lacks the power base of elite sprinters. This paradox raises new questions about what really drives performance in sprinting.