Pain Catastrophizing Is Related to Static Postural Control Impairment in Patients with Nonspecific Chronic Low Back Pain: A Cross-Sectional Study

Table 2

COP sway variables under 2 conditions contracting the two groups.

Group	COP sway area (mm^2)		COP sway length (mm)
	EO condition (mean ± SD)	EC condition (mean ± SD)	EO condition (mean ± SD)	EC condition (mean ± SD)
HC (n = 40)	166.263 ± 8.676	242.800 ± 115.863	240.213 ± 60.605	367.125 ± 86.984
NSCLBP (n = 68)	191.147 ± 122.964	354.485 ± 191.661	247.029 ± 92.283	397.059 ± 174.873
value	0.270	<0.001	0.726	0.374

COP: center of pressure, EO: eyes-open, EC: eyes-closed, NSCLBP: nonspecific chronic low back pain, and HC: healthy control. Significant value is marked with.