Скачать или смотреть OpenSim Webinar: Why Are Antagonists Co-activated in My Simulations?

The biomechanics of pedaling has been studied for decades, as it is a popular task for exercise and rehabilitation but avoids the loading associated with repeated foot-ground contact observed in activities like walking. Simulation of pedaling can reveal new insights into the biomechanics. In this webinar, Adrian Lai from Simon Fraser University and Allison Arnold from Harvard University discuss the anomalous co-activation of antagonist muscles observed in their initial pedaling simulations using OpenSim (http://opensim.stanford.edu/) and describe practical tips for analyzing such tasks that involve substantial hip and knee flexion. Specifically, they show that the anomaly can be resolved if the passive fiber forces generated by the underlying model are diminished.

The model described in the webinar is available from SimTK.org (https://simtk.org/projects/model-high...) and is suitable for generating simulations of movements involving up to 120° of hip flexion and 140° of knee flexion.

You can read more about the study that was described in the presentation:
Lai, A.K.M., Arnold, A.S. & Wakeling, J.M. Ann Biomed Eng (2017). https://doi.org/10.1007/s10439-017-19...