Table 4.
Pre to post treatment changes in group means with standard deviations for surface EMG (μV RMS) and degrees of lumbar range of motion during maximum voluntary flexion.
| Group | Measure | Pre-treatment | Post-treatment | P * |
|---|---|---|---|---|
| SEMG-Assisted Stretching (N=71) | Mean SEMG† | 11.2 (9.4) | 3.3 (4.1) | .000 |
| Gross Lumbar Flexion | 73.5 (23.6) | 109.7 (15.9) | .000 | |
| Pelvic Flexion | 33.9 (16.5) | 58.0 (15.2) | .000 | |
| True Lumbar Flexion | 39.9 (13.2) | 52.0 (9.6) | .000 | |
| Functional Restoration Only (N=23) | Mean SEMG† | 15.8 (10.1) | 11.8 (10.7) | .020 |
| Gross Lumbar Flexion | 62.2 (17.6) | 94.4 (19.7) | .000 | |
| Pelvic Flexion | 25.3 (12.0) | 46.1 (15.9) | .000 | |
| True Lumbar Flexion | 36.9 (9.3) | 48.3 (11.9) | .000 | |
*
Uses Bonferroni's correction for multiple comparisons.
†
Interaction between time and treatment group is significant at p<.05, that is, the difference between the groups changed significantly from pre-treatment to post-treatment.