Journal of NeuroEngineering and Rehabilitation

Table 3 Sensitivity of COP and ACC-based measures

From: ISway: a sensitive, valid and reliable measure of postural control

	COP					ACC					Correlation
	Control		PD		p values	Control		PD		p values	r	p
	Mean	SEM	Mean	SEM	p values	Mean	SEM	Mean	SEM	p values	r	p
Jerk					NA	0.241	0.023	0.394	0.053	0.0003
Trajectory Measures
DIST	4.370	0.329	6.261	0.423	0.002	0.062	0.005	0.088	0.010	0.02	0.73	0.0001
RMS	5.141	0.371	7.329	0.552	0.003	0.073	0.006	0.106	0.012	0.02	0.74	0.0000
PATH	944.015	89.277	817.707	62.661	0.25	17.183	1.028	22.035	2.128	0.05	0.46	0.200
RANGE	32.247	2.750	40.824	3.385	0.06	0.421	0.031	0.610	0.065	0.01	0.64	0.0007
MV	7.867	0.744	6.814	0.522	0.26	1.328	0.229	1.789	0.241	0.18	0.12	0.56
MF	0.290	0.018	0.181	0.016	0.0001	0.393	0.029	0.378	0.045	0.78	0.33	0.11
Area Measures
AREA	10.699	1.581	13.138	2.121	*0.36*	0.002	0.0003	0.005	0.001	0.004	0.68	0.002
Frequency Measures
PWR	9870.8	1761.7	12966.1	1585.1	0.2	2.009	0.269	3.178	0.479	0.04	0.41	0.05
F50	0.410	0.015	0.298	0.012	0.00009	0.385	0.014	0.305	0.012	0.0003	0.86	0.000001
F95	1.518	0.069	0.990	0.057	0.0007	1.849	0.121	1.523	0.128	0.07	0.49	0.01
CF	0.666	0.032	0.451	0.023	0.0002	0.722	0.043	0.591	0.038	0.03	0.47	0.02
FD	0.767	0.009	0.827	0.009	0.00005	0.777	0.009	0.839	0.008	0.0003	0.89	0.000001

Those measures in boldface were significantly different between untreated PD and control subjects. Correlations between COP and ACC measures are also reported.

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ISSN: 1743-0003

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