Table 4. Micro-CT analysis of rib fracture sites among vibration acceleration groups 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] | 0.22±0.17 | 0.69±0.30 a, b | 0.15±0.09 | 0.25±0.33 | 0.26±0.13 |
| BV/TV[%] | 35.8±13.5 | 59.4±14.9 c | 39.1±13.9 | 37.2±15.2 | 37.8±13.8 |
| Tb.Th [μm] | 44.8±10.9 | 55.0±8.6 | 40.0±7.7 | 46.5±9.30 | 43.3±15.5 |
| Tb.N[1/mm] | 7.6±1.0 | 11.0±3.3 | 9.8±3.6 | 9.2±3.1 | 9.7±2.5 |
| Tb.Sp [μm] | 86.3±27.6 | 44.3±27.9 | 79.7±54.9 | 72.1±20.3 | 68.8±25.4 |
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).
c Values in the low-magnitude group were significantly higher than those in the control-VA group.