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 | 7.6 | 4.3 | 8.6 | 3.6 | 5.9 | 2.3 | 1.0 | 0.7 | 1.7** | 2*** |
| L2-L3 | 11.2 | 4.8 | 10.1 | 3.7 | 6.8 | 2.4 | 1.1 | 1.1** | 4.4*** | 2.4*** |
| L3-L4 | 10.1 | 5.1 | 9.2 | 4.1 | 7.7 | 2.6 | 0.9 | 1** | 2.4*** | 2.5*** |
| L4-L5 | 11.9 | 7.1 | 8.3 | 4.4 | 9.1 | 3.3 | 3.6** | 2.7*** | 2.8*** | 3.8*** |
| L5-S1 | 8.1 | 6.2 | 10.3 | 4.6 | 8.5 | 4.2 | -2.2* | 1.6*** | -0.4 | 2** |
| Average | 9.8 | 5.5 | 9.3 | 4.1 | 7.6 | 3.0 | 0.5 | 1.4** | 2.2*** | 2.5*** |