Impaired corrective responses to postural perturbations of the arm in individuals with subacute stroke

Table 2 Task performance

Parameter		LA impaired (%)		RA impaired (%)		Interrater r (p)
Parameter		A arm	U arm	A arm	U arm	Interrater r (p)
Posture speed		50	41	38	13	.74 (<10⁻⁴)
Deceleration time		91	50	63	44	.68 (<10⁻⁴)
Return time		91	77	63	44	.91 (<10⁻¹¹)
Endpoint error		86	68	56	38	.91 (<10⁻¹¹)
Maximum displacement		55	50	31	19	.97 (<10⁻¹⁴)
Joint velocity offset	elbow load	36	32	19	19	.81 (<10⁻⁷)
	shoulder load	45	41	25	19	.74 (<10⁻⁶)

Abbreviations: LA (left affected subjects), RA (right affected subjects), impaired (subjects with stroke whose performance exceeded 95% of controls on a particular task parameter), A arm (affected arm), U arm (unaffected arm).

ISSN: 1743-0003