Table 4.

Growth-rate sensitivity to stress (the gradient of the growth - stress relationships as shown in Figure 2) in each group of growth plates. The gradients were significantly different between anatomical locations (vertebrae versus proximal tibiae), but within each location gradients were not different between species, nor for younger versus older animals).

Species	Growth plate	Gradient (percent per 0.1 MPa)	SE of gradient estimate
Calf	tail vertebra	19.7	4.8
Younger rat	tail vertebra	13.0	1.9
Older rat	tail vertebra	14.1	3.0
Calf	proximal tibia	23.9	2.6
Younger rat	proximal tibia	9.2	2.0
Older rat	proximal tibia	15.1	1.9
Younger rabbit	proximal tibia	14.7	2.6
Older rabbit	proximal tibia	19.9	2.9