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

Table 4

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

	cNLBP (mean ± SD)	Control (mean ± SD)	t
APAsRA	0.017 ± 0.114	−0.019 ± 0.087	1.296	0.201
APAs1RA	0.019 ± 0.167	−0.022 ± 0.121	1.029	0.308
APAs2RA	0.022 ± 0.113	−0.009 ± 0.088	1.121	0.268
CPAsRA	0.031 ± 0.119	0.000 ± 0.084	1.103	0.275
CPAs1RA	0.033 ± 0.132	0.003 ± 0.197	0.971	0.336
CPAs2RA	0.037 ± 0.138	0.004 ± 0.095	1.009	0.318
APAsGA	−0.006 ± 0.064	0.030 ± 0.053	−2.244	0.029
APAs1GA	−0.011 ± 0.082	0.029 ± 0.061	−2.041	0.046
APAs2GA	0.005 ± 0.074	0.036 ± 0.074	−1.572	0.122
CPAsGA	−0.007 ± 0.068	0.012 ± 0.071	−0.965	0.339
CPAs1GA	−0.003 ± 0.077	0.022 ± 0.101	−1.014	0.315
CPAs2GA	−0.003 ± 0.078	0.008 ± 0.064	−0.571	0.571
APAsEO	0.065 ± 0.137	0.007 ± 0.142	1.535	0.131
APAs1EO	0.070 ± 0.212	0.032 ± 0.201	0.675	0.503
APAs2EO	0.067 ± 0.137	-0.011 ± 0.118	2.237	0.030
CPAsEO	0.074 ± 0.157	0.010 ± 0.139	1.581	0.120
CPAs1EO	0.081 ± 0.179	0.000 ± 0.126	1.934	0.059
CPAs2EO	0.073 ± 0.185	0.026 ± 0.195	0.912	0.366
APAsES	−0.002 ± 0.144	−0.012 ± 0.104	0.296	0.769
APAs1ES	0.017 ± 0.146	−0.007 ± 0.120	0.665	0.509
APAs2ES	−0.013 ± 0.180	−0.010 ± 0.120	−0.079	0.938
CPAsES	0.022 ± 0.113	0.002 ± 0.106	0.642	0.524
CPAs1ES	0.009 ± 0.137	0.001 ± 0.132	0.220	0.827
CPAs2ES	0.041 ± 0.118	0.010 ± 0.117	0.965	0.339

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