Table 2.
Mean values 
and standard deviations (SD) of measurements during each final posture in the reference positions (n = 20)
| Measurements | Test repetitions and reference positions | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | ||||||
 |
SD |  |
SD |  |
SD |  |
SD |  |
SD | |
| “Finger–floor distance” | ||||||||||
| finger–floor distance (cm) | −1.9 | 10.3 | −3.3 | 9.9 | −4.0 | 9.9 | −4.8 | 9.4 | −5.4 | 9.4 |
| Schober’s sign (cm) | 15.6 | 1.0 | 15.7 | 1.0 | 15.8 | 1.0 | 15.8 | 1.0 | 15.8 | 1.0 |
| SLI LS (%) | 35.7 | 9.2 | 36.0 | 9.4 | 36.3 | 9.4 | 36.6 | 9.5 | 36.7 | 9.6 |
| Trunk inclination (°) | 96.5 | 9.6 | 97.2 | 9.4 | 97.9 | 9.3 | 98.6 | 9.1 | 98.7 | 8.8 |
| “Prone position” | ||||||||||
| SLI TS (%) | 3.87 | 2.28 | 4.27 | 2.51 | 4.06 | 2.97 | 4.29 | 2.67 | 4.59 | 2.67 |
| SLI LS (%) | 1.19 | 4.24 | 0.19 | 4.38 | 0.86 | 4.87 | 1.37 | 4.10 | 1.51 | 4.61 |
| Trunk inclination (°) | 81.6 | 4.07 | 81.6 | 4.07 | 81.7 | 4.35 | 81.8 | 4.26 | 81.7 | 4.58 |
| “Upright standing” | ||||||||||
| SLI CS (%) | 0.20 | 1.81 | −0.20 | 1.42 | 0.00 | 0.00 | −0.34 | 1.91 | −0.11 | 1.95 |
| SLI TS (%) | 0.03 | 0.70 | 0.04 | 0.44 | 0.00 | 0.00 | 0.15 | 0.66 | 0.28 | 0.79 |
| SLI LS (%) | 0.60 | 2.57 | 0.37 | 1.13 | 0.00 | 0.00 | 0.45 | 1.21 | 0.01 | 1.40 |
| Trunk inclination (°) | 0.18 | 1.38 | 0.05 | 1.17 | 0.00 | 0.00 | 0.37 | 1.30 | 0.25 | 1.27 |
| “70°-flexion” | ||||||||||
| Schober’s sign (cm) | 15.3 | 0.9 | 15.3 | 0.9 | 15.3 | 0.9 | 15.3 | 0.9 | 15.3 | 0.9 |
| SLI LS (%) | 32.9 | 9.4 | 32.4 | 9.4 | 32.7 | 9.4 | 32.6 | 9.5 | 32.7 | 9.5 |
| Trunk inclination (°) | 70 | – | 70 | – | 70 | – | 70 | – | 70 | – |
Data are shown for test repetition 1–5
SLI sagittal length index