A composite robotic-based measure of upper limb proprioception

Table 2 Pearson correlation coefficients between position matching and kinesthetic matching parameters for subjects with stroke (n = 285). Comparisons were made between z-scores for each task parameter. Z-scores were calculated based on distributions of neurologically intact control subject scores (n = 319 data points)

		Position Matching Parameters
		Absolute Error			Variability			Contr/Exp			Shift			E	M
Kinesthetic Matching Parameters		X	Y	XY	X	Y	XY	X	Y	XY	X	Y	XY
	IDE	0.65	0.65	0.69	0.65	0.63	0.67	0.58	0.57	0.60	0.24	0.38	0.38	0.80	0.80
	IDEv	0.59	0.50	0.60	0.57	0.56	0.59	0.49	0.45	0.49	0.22	0.22	0.31	0.67	0.66
	PLR	0.34	0.40	0.39	0.40	0.35	0.40	0.31	0.44	0.36	0.09	0.29	0.20	0.47	0.48
	PLRv	0.56	0.55	0.61	0.60	0.58	0.61	0.40	0.46	0.41	0.26	0.29	0.36	0.65	0.64
	RL	0.43	0.43	0.45	0.46	0.46	0.47	0.37	0.32	0.38	0.10	0.18	0.18	0.50	0.49
	RLv	0.12	0.11	0.12	0.13	0.18	0.14	0.15	0.14	0.14	−0.06	−0.09	−0.02	0.18	0.17
	PSR	0.25	0.36	0.30	0.22	0.27	0.24	0.39	0.39	0.40	0.12	0.24	0.19	0.44	0.47
	PSRv	0.17	0.09	0.16	0.23	0.21	0.23	−0.05	−0.03	−0.03	0.11	0.05	0.15	0.08	0.05
	E	0.63	0.66	0.69	0.66	0.64	0.68	0.57	0.60	0.60	0.23	0.38	0.37	0.80	0.80
	M	0.61	0.66	0.66	0.64	0.63	0.66	0.57	0.60	0.59	0.21	0.40	0.36	0.79	0.80

All bold values are significant at p < 0.00036 (Bonferonni corrected, p < 0.05, n = 140 comparisons)
IDE(v): Initial Direction Error (variability), PLR(v): Path Length Ratio (variability), RL(v): Response Latency (variability), PSR(v): Peak Speed Ratio (variability). Contr/Exp: contraction/ expansion ratio. E: ‘E -score’ calculated from Euclidean distance of z-scores. M: ‘M -score’ calculated from Mahalanobis distance of z-scores

ISSN: 1743-0003