I am currently studying the effect of changes in gait in the kinematics and kinetics of the lower extremities, specifically the tibia. Motion capture data is used to drive the model that we have generated. In total, we have 42 markers, out of which 33 are chosen for the parameter optimization and inverse dynamics.
One of the observations made was that the results (JRFs and angles) are different when different set of markers are chosen for the study (optimized with the same tolerance in both cases), which change the results of the subsequent finite element analysis significantly in some cases.
We have also recorded the emg data, but going through some of the posts, I feel that validating through emg can be difficult. Could someone provide guidance and general remarks on how to interpret results, choose the right markers and validate/verify the results from Anybody.