TABLE 3.

Standard site cross-sectional geometric properties.

Group	Total area (mm2)	Cortical area (mm2)	Marrow area (mm2)	A-P moment of inertia (mm4)	M-L moment of inertia (mm4)	Average cortical thickness (mm)
WT
B6;129 Control	0.752 ± 0.024	0.515 ± 0.017	0.237 ± 0.009	0.050 ± 0.003	0.045 ± 0.003	0.214 ± 0.004
B6;129 Exercise	0.742 ± 0.017	0.509 ± 0.011	0.233 ± 0.008	0.048 ± 0.002	0.044 ± 0.002	0.214 ± 0.003
C3H Control	0.802 ± 0.011	0.618 ± 0.008	0.184 ± 0.004	0.065 ± 0.002	0.047 ± 0.001	0.263 ± 0.002
C3H Exercise	0.818 ± 0.012	0.634 ± 0.010	0.184 ± 0.004	0.066 ± 0.002	0.050 ± 0.002	0.268 ± 0.003
KO
B6;129 Control	0.657 ± 0.018	0.483 ± 0.013	0.174 ± 0.006	0.041 ± 0.002	0.033 ± 0.002	0.223 ± 0.003
B6;129 Exercise	0.634 ± 0.011	0.462 ± 0.010	0.172 ± 0.005	0.036 ± 0.001	0.031 ± 0.001	0.216 ± 0.004
C3H Control	0.805 ± 0.017	0.634 ± 0.011	0.171 ± 0.006	0.066 ± 0.003	0.047 ± 0.002	0.273 ± 0.002
C3H Exercise	0.786 ± 0.016	0.622 ± 0.009	0.164 ± 0.008	0.064 ± 0.003	0.044 ± 0.001	0.272 ± 0.002

Data as presented as mean ± SEM. There were no significant effects of exercise in any groups in these cross-sectional geometric properties.