Panel A. Columns I-III report means and standard deviations of intervertebral rotation by level in asymptomatic individuals; columns IV-V report the differences in means and standard deviations of intervertebral rotation by level.
| [I] | [II] | [III] | [IV] | [V] | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| SBR | VMA (Standing) | VMA (Lying) | Δ SBR-VMA (Standing) | Δ SBR-VMA (Lying) | ||||||
| Level | Mean | Std Dev | Mean | Std Dev | Mean | Std Dev | Mean | Std Dev | Mean | Std Dev |
| L1-L2 | 6.5 | 4.2 | 8.1 | 2.9 | 6.2 | 2.3 | -1.6** | 1.3*** | 0.3 | 1.9*** |
| L2-L3 | 9.7 | 4.6 | 9.6 | 2.8 | 9.0 | 2.2 | 0.1 | 1.8*** | 0.7 | 2.4*** |
| L3-L4 | 10.2 | 4.6 | 10.1 | 3.2 | 9.8 | 2.9 | 0.1 | 1.4*** | 0.4 | 1.7*** |
| L4-L5 | 7.2 | 4.2 | 8.6 | 3.8 | 9.2 | 3.2 | -1.4** | 0.4 | -2*** | 1** |
| L5-S1 | 1.9 | 1.6 | 3.1 | 1.6 | 3.8 | 2.2 | -1.2* | 0.0 | -1.9** | -0.6 |
| Average | 7.1 | 3.8 | 7.9 | 2.9 | 7.6 | 2.6 | -0.8 | 1.0*** | -0.5 | 1.3*** |