Fig. 5
From: System identification: a feasible, reliable and valid way to quantify upper limb motor impairments
a Estimated elbow inertia; b estimated viscosity; and c estimated stiffness, for both tasks and all conditions, separated for healthy controls and patients. Joint inertia was kept constant across the tasks. d Change in viscosity (\({b}_{slope}\)); and e change in stiffness (\({k}_{slope}\)) across the ‘do not intervene’ conditions, separated by participant group. Each red or blue colored symbol marks one participant, whereas the black circle indicates the median and black dashes the 25th and 75th percentile.