A Study on the Relationship between Postural Control and Pain-Related Clinical Outcomes in Patients with Chronic Nonspecific Low Back Pain

Table 5

The COP measurements of the cNLBP and control groups in the external perturbation task.

	cNLBP (mean ± SD)	Control (mean ± SD)	t
X-COP at T0	9.05 ± 7.35	5.96 ± 4.32	1.546	0.130
Y-COP at T0	6.22 ± 3.62	4.15 ± 3.97	1.714	0.095
X-COP at peak	26.45 ± 23.08	14.52 ± 12.22	1.936	0.060
Y-COP at peak	18.82 ± 10.64	10.75 ± 7.02	2.717	0.010