Table 4. Changes in the Measured Range of Knee Joint Flexion in the Ozone Group Versus the LLLT Group.

	Time Point	Ozone Group (n = 30)	LLLT Group (n = 30)	Total (n = 60)	P Value*
Goniometric range	basic	120.23 ± 4.37	118.33 ± 5.36	119.16 ± 5.41	0.137
	Mid of treatment	124.03 ± 4.83	121.12 ± 5.41	122.56 ± 5.12	0.031
	End of study	129.90 ± 5.71	124.37 ± 6.79	127.32 ± 6.15	0.001
P value**	0.002	0.049	0.015

* Within group P values.

** Between group P values.