Table 2 Duration and percentage of time in static back posture for LBP subjects and asymptomatic subjects in four trunk flexion categories
Subjects with LBP (n = 18) | Asymptomatic subjects (n = 15) | p-value | |||
|---|---|---|---|---|---|
≤ 10° flexion | 3.41 ± 0.83 hr | 56.9 ± 13.7% | 4.61 ± 0.93 hr | 76.8 ± 15.6% | 0.002 |
11°–30° flexion | 1.86 ± 0.59 hr | 31.0 ± 9.9% | 1.09 ± 0.74 hr | 18.2 ± 12.4% | 0.012 |
31°–60° flexion | 0.69 ± 0.34 hr | 10.2 ± 5.7% | 0.25 ± 0.18 hr | 4.2 ± 3.0% | 0.002 |
≥ 61° flexion | 0.11 ± 0.12 hr | 1.9 ± 2.0% | 0.03 ± 0.02 hr | 0.5 ± 0.4% | 0.012 |
Total | 6 hr | 100% | 6 hr | 100% | |