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Updated: Dec 24, 2025

Influence of Step-Width Manipulation on Running Biomechanics
Published on: February 28, 2025
How to build a new athletic track to break records
Amandine Aftalion1, Emmanuel Trélat2
1Ecole des Hautes Etudes en Sciences Sociales, Centre d'Analyse et de Mathématique Sociales UMR-8557, Paris, France.
Abstract:
We introduce a new optimal control model which encompasses pace optimization and motor control effort for a runner on a fixed distance. The system couples mechanics, energetics, neural drive to an economic decision theory of cost and benefit. We find how effort is minimized to produce the best running strategy, in particular, in the bend. This allows us to discriminate between different types of tracks and estimate the discrepancy between lanes. Relating this model to the optimal path problem called the Dubins path, we are able to determine the geometry of the optimal track and estimate record times.
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