Table 7.

Dynamic histology shows vitamin A decreased periosteal bone formation and increased endocortical bone formation after 8 days of supplemented vitamin A diet.

	Control (n = 10)	Supplemented (n = 8)
Periosteal
MS/BS (%)	23.2 ± 4.34	18.1 ± 3.98
MAR (µm/day)	2.16 ± 0.55	0.91 ± 0.11P  = 0.062
BFR/BS (µm3/µm2/day)	0.47 ± 0.10	0.18 ± 0.06*
Endocortical
MS/BS (%)	85.7 ± 2.4	88.3 ± 1.8
MAR (µm/day)	5.38 ± 0.26	6.50 ± 0.31*
BFR/BS (µm3/µm2/day)	4.63 ± 0.30	5.76 ± 0.36*

Femur periosteal and endocortical mineralized surface/bone surface (MS/BS), mineral apposition rate (MAR), and bone formation rate/bone surface (BFR/BS) after 8 days of supplemented vitamin A diet obtained from dynamic histomorphometry. Values represented as mean ± s.e.m. Student’s t-test.

*P < 0.05.