Table 1.

Demographic Data.

	Patients with low back pain	Healthy volunteer	p value
No. of patients	20	20
Age, mean (range), yr	66.3±11.3 (37−88)	63.0±24.3 (27−94)	0.44
Gender (Male/Female)	12/8	10/10
Visual analog scale (low back pain)	8.1±1.8
Diagnosis
Lumbar spondylosis	9 (45%)
Lumbar spondylolisthesis	7 (35%)
Lumbar degenerative disc disease	2 (10%)
Degenerative lumbar scoliosis	2 (10%)