Use of a Robotic Device for the Rehabilitation of Severe Upper Limb Paresis in Subacute Stroke: Exploration of Patient/Robot Interactions and the Motor Recovery Process

Table 2

Changes in interaction parameters and number of movements from S1 to S16.

= 25	S1	S4	S8	S12	S16
Stiffness (N/m) mean ± SD	247 ± 28	240 ± 34	231 ± 16	221 ± 44^a	218 ± 44^a
Slottime (s) mean ± SD	1.48 ± 0.31	1.33 ± 0.23	1.27 ± 0.28^a	1.24 ± 0.27^a	1.27 ± 0.29^a
Robot (active) Power (mwatt) mean ± SD	95.5 ± 26	83.6 ± 26	82.6 ± 34	80.2 ± 34	82 ± 34
Number of movements mean ± SD	614 ± 250		780 ± 271		857 ± 342

Versus S1, < 0.05.