This is the data belonging to the publication "Change the direction: 3D optimal control simulation by directly tracking marker and ground reaction force data". This study investigated the feasibility and accuracy of reconstructing, especially change of direction motions with a 3D full-body musculoskeletal model by tracking marker and ground reaction force (GRF) data in optimal control simulations. We recorded in total 30 trials with optical motion capture. Using this data, we compared inverse methods (inverse kinematics and dynamics) to coordinate tracking simulations and marker tracking simulations. Please see the README and the publication for further details.