Table 6 Intertester Reliability of the measurement of Length of the Transverse Abdominis muscle at three Lumbar levels at rest and during the hollowing maneuver
Resting | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Right Mean (SD) cm | Left Mean (SD) cm | ICC (95% CI) | SEM (95% CI for muscle size) | % SEM | Minimal Difference (cm) | |||||
Level | Right | Left | Right | Left | Right | Left | Right | Left | ||
L1 | 6.7 (1.57) | 7.21 (2.00) | 0.981 (0.958–0.992) | 0.992 (0.973–0.995) | 0.216 (6.27, 7.12) | 0.178 (6.86, 7.56) | 3.22 | 2.47 | 0.598 | 0.494 |
L3 | 6.18 (1.53) | 6.41 (1.23) | 0.991 (0.981–0.996) | 0.981 (0.960–0.993) | 0.145 (5.89, 6.46) | 0.170 (6.07, 6.74) | 2.34 | 2.66 | 0.401 | 0.472 |
L5 | 5.60 (1.68) | 5.89 (1.30) | 0.991 (0.981–0.997) | 0.981 (0.960–0.993) | 0.160 (5.28, 5.91) | 0.180 (5.54, 6.24) | 2.85 | 3.05 | 0.443 | 0.497 |
Average value (SD) | 6.33 (1.55) | 0.99 (0.01) | 0.17 (0.024) | 2.77 (0.339) | 0.48 (0.066) | |||||
Hollowing | ||||||||||
Right Mean (SD) cm | Left Mean (SD) cm | ICC (95% CI) | SEM (95% CI for muscle size) | %SEM | Minimal Difference (cm) | |||||
Level | Right | Left | Right | Left | Right | Left | Right | Left | ||
L1 | 5.14 (1.45) | 5.73 (1.69) | 0.979 (0.956–0.992) | 0.982 (0.961–0.993) | 0.210 (4.73, 5.55) | 0.226 (5.29, 6.17) | 4.09 | 3.95 | 0.583 | 0.627 |
L3 | 4.73 (1.30) | 4.82 (1.34) | 0.975 (0.942–0.990) | 0.975 (0.948–0.990) | 0.205 (4.33, 5.13) | 0.212 (4.41, 5.24) | 4.35 | 4.40 | 0.570 | 0.587 |
L5 | 4.18 (1.45) | 4.29 (1.14) | 0.987 (0.973–0.995) | 0.987 (0.973–0.995) | 0.165 (3.85, 4.50) | 0.130 (4.04, 4.55) | 3.95 | 3.02 | 0.457 | 0.360 |
Average value (SD) | 4.82 (1.40) | 0.98 (0.01) | 0.04 (0.036) | 3.96 (0.50) | 0.53 (0.101) | |||||