Differences and Correlations of Anxiety, Sleep Quality, and Pressure-Pain Threshold between Patients with Chronic Low Back Pain and Asymptomatic People

Table 5

Correlation among anxiety, sleep quality, and PPT in patients with chronic low back pain.

			LS	RHO	ILI	QL	ES	TRA	GM	PIR	HM	GAS
Chronic low back pain (n = 40)	State anxiety	Pearson	−0.433	−0.335	−0.386	−0.360	−0.403	−0.379	−0.298	−0.182	−0.303	−0.291
		value	0.006	0.037	0.015	0.024	0.011	0.017	0.065	0.268	0.060	0.072
	Trait anxiety	Pearson	−0.465	−0.335	−0.333	−0.338	−0.390	−0.272	−0.284	−0.120	−0.278	−0.279
		value	0.003	0.037	0.038	0.035	0.014	0.094	0.080	0.467	0.087	0.086
	Pittsburgh sleep quality index	Pearson	−0.014	0.103	0.071	0.142	0.132	0.079	0.111	0.204	0.179	0.089
		value	0.933	0.533	0.667	0.390	0.423	0.631	0.502	0.212	0.277	0.589
Chronic low back pain + asymptomatic (n = 80)	State anxiety	Pearson	−0.346	−0.222	−0.248	−0.250	−0.263	−0.234	−0.175	−0.136	−0.196	−0.166
		value	0.001	0.043	0.023	0.022	0.016	0.032	0.111	0.216	0.074	0.132
	Trait anxiety	Pearson	−0.353	−0.234	−0.178	−0.244	−0.267	−0.193	−0.142	−0.072	−0.185	−0.161
		value	0.001	0.032	0.106	0.026	0.014	0.078	0.199	0.518	0.093	0.143
	Pittsburgh sleep quality index	Pearson	−0.098	0.030	−0.025	−0.031	−0.009	−0.019	−0.006	0.049	0.074	0.003
		value	0.375	0.786	0.819	0.781	0.935	0.861	0.957	0.658	0.506	0.980

LS: levator scapula; RHO: rhomboid; ILI: iliopsoas; QL: quadratus lumborum; ES: erector spinae; TRA: transversus abdominis; GM: gluteus medius; PIR: piriformis; HM: hamstring muscle; GAS: gastrocnemius. .