Table 3. Micro-CT analysis of ectopic bone among vibration and constant acceleration groups.
| Vibration acceleration | Constant acceleration | ||||
|---|---|---|---|---|---|
| Control-VA (n = 8) | Low (n = 8) | High (n = 8) | Control-CA (n = 10) | Centrifuge (n = 10) | |
| BV [mm3] | 1.3±0.9 | 3.1±1.2 a, b | 1.8±1.2 | 1.5±1.2 | 1.4±1.0 |
| BV/TV [%] | 36.5±11.4 | 33.2±10.7 | 45.9±14.2 | 35.5±10.3 | 33.7±11.1 |
| BMD [mg/cm3] | 233.6±18.7 | 240.0±74.0 | 235.8±10.0 | 253.6±19.5 | 262.0±80.0 |
| Tb.Th [μm] | 46.7±8.9 | 52.0±8.0 | 53.9±9.2 | 48.1±7.2 | 47.9±9.1 |
| Tb.N [1/mm] | 7.9±2.4 | 6.6±2.5 | 8.6±2.6 | 6.8±4.4 | 7.9±2.6 |
| Tb.Sp [μm] | 95.5±53.7 | 126.8±72.1 | 74.8±43.2 | 105.0±55.8 | 118.8±64.3 |
Control-VA: Control group of vibration acceleration groups, Low: Low-magnitude group, High: High-magnitude group, Control-CA: Control group of constant acceleration groups, Centrifuge: Centrifuge group
a Values in the low-magnitude group were significantly higher than those in the control-VA, and high-magnitude group (vibration acceleration groups).
b Values in the low-magnitude group were significantly higher than those in the control-CA and centrifuge group (constant acceleration groups).