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

Table 2

The muscle iEMGs between the cNLBP and control groups in the internal perturbation task.

	cNLBP (mean ± SD)	Control (mean ± SD)	t
APAsRA	0.253 ± 0.369	0.077 ± 0.110	2.371	0.024
APAs1RA	0.157 ± 0.321	0.049 ± 0.104	1.664	0.106
APAs2RA	0.357 ± 0.471	0.113 ± 0.159	2.550	0.016
CPAsRA	1.144 ± 1.306	0.760 ± 1.063	1.184	0.242
CPAs1RA	0.760 ± 1.014	0.402 ± 0.471	1.668	0.104
CPAs2RA	1.540 ± 1.773	1.131 ± 1.733	0.857	0.395
APAsGA	0.087 ± 0.168	0.160 ± 0.390	−0.892	0.376
APAs1GA	0.062 ± 0.128	0.110 ± 0.341	−0.682	0.498
APAs2GA	0.119 ± 0.246	0.271 ± 0.558	−0.841	0.404
CPAsGA	0.504 ± 0.650	0.484 ± 0.351	0.142	0.887
CPAs1GA	0.474 ± 0.709	0.530 ± 0.512	−0.330	0.743
CPAs2GA	0.547 ± 0.735	0.450 ± 0.458	0.582	0.563
APAsEO	0.455 ± 0.678	0.308 ± 0.544	0.881	0.383
APAs1EO	0.351 ± 0.880	0.186 ± 0.357	0.899	0.373
APAs2EO	0.571 ± 0.668	0.436 ± 0.786	0.677	0.501
CPAsEO	2.374 ± 2.393	1.887 ± 2.118	0.807	0.423
CPAs1EO	1.403 ± 1.386	1.065 ± 0.810	1.096	0.279
CPAs2EO	3.364 ± 3.689	2.713 ± 3.709	0.646	0.521
APAsES	0.857 ± 1.137	0.336 ± 0.331	2.288	0.029
APAs1ES	0.611 ± 0.964	0.154 ± 0.253	2.385	0.024
APAs2ES	1.119 ± 1.480	0.526 ± 0.558	1.947	0.060
CPAsES	3.049 ± 2.723	1.943 ± 1.559	1.830	0.074
CPAs1ES	2.116 ± 2.085	1.882 ± 1.743	0.448	0.656
CPAs2ES	4.004 ± 4.242	2.155 ± 1.937	2.060	0.047

RA, rectus abdominis; GA, gastrocnemius; EO, lateral external oblique; ES, erector spinae. .