A haptic-robotic platform for upper-limb reaching stroke therapy: Preliminary design and evaluation results

Table 2 Therapists' ratings of prototype operation.

	No Power		Low Power		Medium Power		High Power
	Mean	SD	Mean	SD	Mean	SD	Mean	SD
Comfort	3.75	0.46	3.75	0.46	3.63	0.52	3.63	0.52
Comfort-P	2.69	1.28	3.13	0.99	3.50	0.76	3.38	0.74
Safety	4.00	0.00	4.00	0.00	3.88	0.35	3.75	0.71
Safety-P	3.25	1.16	3.63	0.74	3.63	0.74	3.38	0.92
QOM	4.00	0.00	3.75	0.46	3.38	0.74	3.38	0.92
QOM-P	3.75	0.71	3.88	0.35	3.19	0.84	3.06	0.78

Mean and standard deviation (SD) of haptic platform responses for comfort level, perceived safety, and quality of motion (QOM) with respect to therapists' own experience with the prototype and their opinion of prototype suitability for use with stroke patients (denoted by -P suffix). Ratings are from 1 (bad) to 4 (good), N = 8.

ISSN: 1743-0003