Table 2 Parameters of bone growth. Values expressed as mean (±standard deviation).

Groups	Skull-tale length (cm)	Tibia length (mm)	Cartilage weight (% of body weight)	Proteoglycan synthesis1 (cpm/100 mg tissue).
Sup/Ex	36.07 (1.20)	32.82 (1.68)	.039 (.001) §	301.95 (81.50) ‡
Ctrl/Ex	35.92 (2.33)	33.33 (2.39)	.041 (.003) † *	218.52 (80.40)
Sup/Sed	38.28 (.80) †	34.12 (2.19)	.034 (.003)	6395.95 (2066.20) †
Ctrl/Sed	37.07 (1.30) ‡	35.03 (2.67)	.034 (.003)	6284.27 (1877.30) ‡

by SO incorporation on cartilage* p < 0.05 when compared to Ctrl/Sed†  p<0.05 when compared to Sup/Ex‡ p<0.05 when compared to Ctrl/Ex§ p<0.05 when compared to Sup/Sed.