Table 3.

CT-scan measurements of the muscular area at left L5 level in the three study groups.

Time	Group	Mean	SD
Baseline	Control	13.3	2.6
	PRGF	12.7	2.4
	HPRGF	12.8	2.9
14 days	Control	12.9	2.7
	PRGF	12.2	2.5
	HPRGF	13.2	2.8
28 days	Control	12.5	2.5
	PRGF	12.3	3.3
	HPRGF	12.8	2.6
42 days	Control	12.4	2.5
	PRGF	12.1	2.7
	HPRGF	13.1	3.1
56 days	Control	12.9	2.6
	PRGF	11.8	2.4
	HPRGF	12.4	3.1