Center of pressure (CoP) range, root mean square (RMS) and velocity in the medial-lateral (ML) and anterior-posterior (AP) directions during repetitive bilateral reaching task for 30 s and 120 s in controls, as well as non-freezers and freezers on and off medication.

<p>Center of pressure (CoP) range, root mean square (RMS) and velocity in the medial-lateral (ML) and anterior-posterior (AP) directions during repetitive bilateral reaching task for 30 s and 120 s in controls, as well as non-freezers and freezers on and off medication.