KneeExt

A simple function to simulate a leg-extension.

This is a simple function to solve an equation of motion for simulating the concentric knee extension model published by Sust, Schmalz & Linnenbecker (1997a) and additionally includes muscle activation (Sust et al., 1997b). Subject specific values of anthropometry, muscle activation, and force-velocity relationship can be manipulated to understand the effect of individually varying geometrical relations and muscle properties.
The original form of the function was provided by Sigrid Thaller and was revised by Harald Penasso, both, Institute of Sport Science, University of Graz, Graz, Austria.
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Sust, M., Schmalz, T., & Linnenbecker, S. (1997a). Relationship between distribution of muscle fibres and invariables of motion. Human Movement Science, 16(4), 533–546.
Sust, M., Schmalz, T., Beyer, L., Rost, R., Hansen, E., & Weiss, T. (1997b). Assessment of isometric contractions performed with maximal subjective effort: corresponding results for EEG changes and force measurements. The International Journal of Neuroscience, 92(1–2), 103–118.