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The activation score (mmHg) and the performance index of subacute LBP, chronic LBP, and age- and gender-matched control groups.
| Groups | Subacute LBP (n = 23) |
Chronic LBP (n = 23) |
Control (n = 30) |
P value |
|---|---|---|---|---|
| Activation score (mmHg) | 4.4 (2.3) | 4.3 (2.7) | 6.7 (2.1) | 0.0002 |
| Minimum | 0 | 0 | 2 | |
| Maximum | 10 | 10 | 10 | |
| Performance index | 17.0 (13.7) | 21.7 (21.5) | 37.5 (18.6) | 0.0004 |
| Minimum | 0 | 0 | 4 | |
| Maximum | 50 | 80 | 80 |
