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1. Load the model file jumper_model_updated.osim.
2. In the Navigator pane, select the model by clicking on the model name "jumper". This should bring up the properties of the model in the Properties pane.
3. In the Properties pane, click on "Outputs". This Properties pane will now be populated with the outputs that can be extracted from the model. The name of each output appears in the left column, and the data type in the right column.
4. To use the Output Reporter, the full path to each output is needed. We'll find the output for the center of mass position of the whole model. Select "com_position" in the Outputs list. In the bottom left, there are now two strings. The top string is the name of the output (i.e., "com_position"), and the line below contains the full path (i.e., "/|com_position")

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1. . See below for how your Navigator and Properties panes could show at this point.

Image Added

Next, we'll find the output for the right hand's position.

1. In the Navigator pane, expand the "jumper" level, then the "Bodies" list.
2. Click on the body "hand_r".
3. In the Properties pane, select Outputs.
4. Click the "position" Output.
5. Find the full path for the "position" output (i.e., "/bodyset/hand_r|position")

Finally, we'll find some interesting muscle outputs. In particular, we're find the active force length multipliers for the right calf muscles, "soleus_r" and "gastroc_r".

1. Find the two muscles, "soleus_r" and "gastroc_r" by expanding "Forces", then "Muscles".
2. For each muscle, go to the Outputs tab and find the "active_force_length_multiplier" output.
3. Write down the full path of the "active_force_length_multiplier" output for each muscle.

We'll use all of the paths to the outputs in the next section.

Exploring the Output Reporter analysis tool

The Output Reporter analysis allows us to get the values for all of the outputs above easily for a given simulation. The example files contain a setup file that sets up the analysis for our jumping simulation.

References

1. Delp, S.L., Loan, J.P., Hoy, M.G., Zajac, F.E., Topp E.L., Rosen, J.M. An interactive graphics-based model of the lower extremity to study orthopaedic surgical procedures. IEEE Transactions on Biomedical Engineering, vol. 37, pp. 757-767, 1990.
2. Hamner, S.R., Seth, A., Steele, K.M., Delp, S.L.A rolling constraint reproduces ground reaction forces and moments in dynamic simulations of walking, running, and crouch gait. Journal of biomechanics, vol. 46, pp. 1772-1776, 2013.