Hi expers, i have a question using Hunt-Crossley contact model to calculate center of pressure applying on foot. I use opensim model(Bianco et al. 2023, Simulating the effect of ankle exoskeleton torques on walking kinematics, https://simtk.org/projects/balance-exo-sim) that contains six Hunt-Crossl...

Hi I want to use muscle weakness model to know how much force should be supplemented by external actuator to assist weakened muscle. However, I don't know how to implement external actuator in opensim. As far as I know, in opensim, you can't control the torque value of motor with respect to time, so...

Thank you! Thank you for your response. But I have a question. Take the knee joint, for example, When only the GRF of the right foot is taken as an input, the output of the left knee in the ID (moment) is garbage, but in the same situation for SO, there is the output that the knee joint flexor and e...

I want to do that and use the status file as an analysis tool to study knee joint contact force Pipelines are as follows Scaling IK static optimization Analytical knee contact force There are static test trc files for scaling, trc files for moving the sedentary stand, and grf force files for the rig...

Hi Thank you so much for providing your amazing model. i have three questions. first, I'm curious about what the RLAS and LLAS marker are. are these markers marker's on iliac crest? second, I'm trying to implement the sit-to-stand motion, stair ascending and descending on your bedo model. I know tha...

Hi i need some help The marker set used in our lab consists of 38 markers, and the bedo model I want to use consists of 45 markers. I have some questions here. 1. Our lab's marker set is fewer than the 45 marker sets of the bedo model, at 38. If we modify the marker set of the bedo model to our lab'...

Hi i use "Examining Muscle Forces during Sit to Stand Transfer with Full Body Model 2016" model to analysis muscle force during sit to stand movement. when i opened the model, it's skeleton looks weird below, even i tried 'show' the right side humeus in this model but it didn't work. is it graphical...

Hi i use "Examining Muscle Forces during Sit to Stand Transfer with Full Body Model 2016" model to analysis muscle force during sit to stand movement. To use this model, i opened .osim file of model, but there's an error message below. So i corrected 'rotational' to 'coupled' of coordinates in this ...

hi I have one question I want to analyze the angle, moment, joint contact force, and muscle activation of the ankle and knee joints for sit-to-stand and stand-to-sit movements. Since our lab only has one force plate, I think we can't perform CMC through RRA. So I'm planning to perform SO (static opt...

hi Our lab has a motion capture system, emgs and only one ground reaction plate. We experiment with movements such as walking down and up stairs, walking down and up an incline, walking on level ground, sitting and standing, and standing and sitting. For walking experiments, subjects were instructed...