Hi When I directly select a muscle in the navigator and then make adjustments in the properties such as max_isometric_force, optimal_fiber_length, tendon_slack_length, change the parameters, use the plot of tools to open Inverse Dynamics and set the muscle part, the curve that comes out is the same ...

Hello, I am new to opensim and not very good at using it.
Could you please tell me if the information you uploaded is related to how to change muscle mass in the lower limbs?

I would like to ask if someone can tell me whether I can modify the amount of lower limb muscle mass in the Gait2354_Simbody file?
Or tell me any method that can change the muscle mass of the lower limbs, thank you

But currently I'm learning to use opensim. Follow the steps of the teaching platform to open the Gait2392_simbody folder, select the gait2392_simbody.osim file, and click to open. But the model is not displayed on the screen, what should I do?