Search found 21 matches

by Park SangJun
Tue Apr 30, 2024 8:06 pm
Forum: OpenSim
Topic: Sit to stand one force plate
Replies: 0
Views: 322

Sit to stand one force plate

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...
by Park SangJun
Tue Apr 30, 2024 8:03 pm
Forum: OpenSim
Topic: Predict left foot GRF
Replies: 0
Views: 327

Predict left foot GRF

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...
by Park SangJun
Tue Apr 16, 2024 7:42 am
Forum: OpenSim
Topic: CMC vs RRA vs SO
Replies: 1
Views: 583

CMC vs RRA vs SO

hi I have a question. As I know, Result of RRA: excitation for each joint, Result of CMC: excitation for each muscle, Result of Static optimization: excitation for each muscle. Here, the results of CMC and SO are the same(excitation of muscles), but CMC produces excitation of muscles as a result aft...
by Park SangJun
Wed Apr 10, 2024 10:27 pm
Forum: OpenSim
Topic: one force plate during sit to stand and gait experiments
Replies: 1
Views: 529

one force plate during sit to stand and gait experiments

hi I want to analyze muscle activity and joint moments from sitting to standing and gait seperately. There is only one force plate in our lab. During the sit to stand experiment, only the right foot was placed on the force plate and only the right foot stepped on the force plate during gait experime...
by Park SangJun
Wed Apr 03, 2024 10:04 pm
Forum: OpenSim
Topic: Subtalar joint in gait2354 model
Replies: 3
Views: 662

Re: Subtalar joint in gait2354 model

Hi mohammadreza thanks for your reply. I will proceed according to your answer. I have one question. Regarding the marker weight and coordinate weight in the picture below, the marker weight seems to be weighted to follow the trajectory of the marker more appropriately, but if you enter a large numb...
by Park SangJun
Wed Apr 03, 2024 3:32 am
Forum: OpenSim
Topic: Subtalar joint in gait2354 model
Replies: 3
Views: 662

Subtalar joint in gait2354 model

hi
I have motion capture data for walking and sit to stand movements.
However, when this data is entered into the gait2354 model, the subtalar joint does not move.
I would like to analyze the ROM, moment, and contact force of the subtalar joint. How can I do this?
I need help
thank you
by Park SangJun
Tue Apr 02, 2024 9:56 pm
Forum: OpenSim
Topic: Unit of plot
Replies: 1
Views: 636

Unit of plot

hi
i have one question about units of results plot of static optimization.
can u tell me what is the unit of result plot of muscle activation and muslce force obtained by static optimization?
thanks
by Park SangJun
Tue Apr 02, 2024 2:47 am
Forum: OpenSim
Topic: RRA double limb support with only one force plate
Replies: 1
Views: 599

RRA double limb support with only one force plate

hi I have one question. Our lab only has one force plate. When we conducted a walking experiment, we instructed the subject to step on the force plate with their right foot. So we don't have left foot ground reaction force data. In this situation, I think the RRA results are correct in the single li...
by Park SangJun
Fri Feb 16, 2024 5:13 am
Forum: RRA Optimization MATLAB GUI
Topic: Generating muscle weakness patient kinetics and kinematics data from healthy subject's data?
Replies: 0
Views: 101

Generating muscle weakness patient kinetics and kinematics data from healthy subject's data?

Based on the walking experimental data (trc / GRF / EMG) obtained for healthy subjects, can we create walking data for muscle weakness patients?
by Park SangJun
Tue Feb 06, 2024 1:55 am
Forum: OpenSim
Topic: RRA input files
Replies: 1
Views: 233

RRA input files

Hello Opensim Team, I hope this message finds you well. I have some inquiries regarding Opensim RRA input files. Specifically, I'm interested in understanding the intricacies of each file, including setup, tasks, control constraints, and actuator files. Could you please provide detailed explanations...