Table 2. Test-retest reliability.
| Lumbar | Range of max. force (N) |
Variables | Mean (SD) of variables | ICC (95% CI) | SEM |
|---|---|---|---|---|---|
| Rater 1 | |||||
| L1 (n = 27) |
16.20–61.60 | Displacement (mm) | 5.31 (2.52) | 0.67 (0.28–0.85) | 1.45 |
| Stiffness (N/mm) | 3.69 (1.48) | 0.72 (0.38–0.87) | 0.78 | ||
| L2 (n = 29) |
19.30–68.60 | Displacement (mm) | 5.64 (2.31) | 0.59 (0.12–0.81) | 1.48 |
| Stiffness (N/mm) | 3.46 (1.04) | 0.74 (0.46–0.88) | 0.53 | ||
| L3 (n = 30) |
21.10–69.80 | Displacement (mm) | 6.84 (3.60) | 0.70 (0.36–0.86) | 1.98 |
| Stiffness (N/mm) | 3.38 (1.40) | 0.80 (0.58–0.90) | 0.62 | ||
| L4 (n = 29) |
21.50–73.40 | Displacement (mm) | 8.35 (3.79) | 0.86 (0.71–0.94) | 1.41 |
| Stiffness (N/mm) | 3.15 (1.34) | 0.88 (0.74–0.94) | 0.47 | ||
| L5 (n = 29) |
21.50–77.40 | Displacement (mm) | 9.44 (3.10) | 0.76 (0.50–0.89) | 1.48 |
| Stiffness (N/mm) | 2.85 (1.16) | 0.78 (0.52–0.90) | 0.54 | ||
| Rater 2 | |||||
| L1 (n = 27) |
18.40–41.40 | Displacement (mm) | 5.58 (2.38) | 0.64 (0.23–0.84) | 1.42 |
| Stiffness (N/mm) | 2.95 (0.90) | 0.56 (0.03–0.80) | 0.60 | ||
| L2 (n = 30) |
18.00–53.60 | Displacement (mm) | 5.44 (2.56) | 0.59 (0.13–0.81) | 1.63 |
| Stiffness (N/mm) | 3.21 (1.09) | 0.60 (0.15–0.81) | 0.69 | ||
| L3 (n = 30) |
21.50–52.30 | Displacement (mm) | 5.72 (2.94) | 0.60 (0.15–0.81) | 1.85 |
| Stiffness (N/mm) | 3.25 (1.10) | 0.51 (−0.01–0.77) | 0.77 | ||
| L4 (n = 29) |
22.40–60.70 | Displacement (mm) | 7.28 (3.62) | 0.70 (0.36–0.86) | 1.99 |
| Stiffness (N/mm) | 2.91 (1.04) | 0.63 (0.21–0.82) | 0.64 | ||
| L5 (n = 29) |
21.50–60.20 | Displacement (mm) | 8.07 (2.98) | 0.57 (0.08–0.80) | 1.96 |
| Stiffness (N/mm) | 2.94 (0.96) | 0.53 (0.03–0.77) | 0.66 | ||
Notes.
Abbreviation
- CI
- confident interval
- ICC
- intra-class correlation coefficient
- SD
- standard deviation
- SEM
- standard error of measurement