CMC Muscle Activations Meaning/Adjustment

Provide easy-to-use, extensible software for modeling, simulating, controlling, and analyzing the neuromusculoskeletal system.
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Josée Mallah
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Joined: Thu Jan 20, 2022 6:52 am

CMC Muscle Activations Meaning/Adjustment

Post by Josée Mallah » Thu May 16, 2024 1:02 pm

How do CMC muscle activations work/what does their amplitude mean? i.e. what does an activation of 1 mean? Is it MVC for example, or what?
I am trying to compare the muscle controls with EMG data (which is normalized to the maximum during gait), but I have no idea as to how the amplitudes should compare.
Also, control constraints can be used to turn off a muscle; but how to (force) turn on a muscle?
Any thoughts?
Thank you

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Carmichael Ong
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Joined: Fri Feb 24, 2012 11:50 am

Re: CMC Muscle Activations Meaning/Adjustment

Post by Carmichael Ong » Fri May 17, 2024 5:50 pm

Please see the Muscle Model Theory and Publications documentation page ( ... blications) to better understand how activation is defined by these models.

The paper Is My Model Good Enough? Best Practices for Verification and Validation of Musculoskeletal Models and Simulations of Movement ( ... ks2015.pdf) will also be helpful to understand how to validate your results.