Tim J. van der Zee

This paper develops a biophysical cross-bridge model to predict muscle short-range stiffness during movement, finding that cooperative myofilament activation is essential for accurate predictions.

UltraTimTrack improves fascicle tracking in ultrasound images by combining Kalman filters with existing algorithms, reducing noise and drift across conditions.

The paper develops a new muscle model that integrates force development dynamics, finding that conventional processes cannot explain force production speed, and proposes 'force facilitation dynamics' as a key rate-limiting factor.