Table 2 . Means and Standard Deviations of Disability, Pain Intensity and Lumbar ROM at Baseline and After 12 Treatment Sessions in Both Groups .

Parameter	Monochromatic*			Laser
	Before treatment	After 12 sessions	P Vale	Before treatment	After 12 sessions	P Vale
Disability	41.5±12.5	20.4 ±5.7	.001*	45.9 (14.6)	33.1 (11.3)	.001*
Pain	44.2±13.7	28.6±11.7	.012*	46.1 (14.2)	31.2 (12.1)	.021*
Flexion ROM	48.8±19.4	61.3±12.6	.02*	55.3 (16.8)	69.5 (13.6)	.013*
Extension ROM	19.4±8.2	33.62±5.6	.01*	22.6 (9.6)	32.1 (9.3)	.03*

Abbreviations: ROM, range of motion.