Table 2.
Mean differences (Mean diff.) 95% confidence intervals (95%CI) and statistical significance of differences in Serratus Anterior %MVC(EMG) activity between subjects with (Subjects) and without (Controls) SIS.
| Author | Task | Torque as %MVC(EMG) | Subjects | Controls | Mean Diff. | 95%CI | Stat. sig. |
|---|---|---|---|---|---|---|---|
| Concentric Scaption | |||||||
| Ludewig | < 60° | No load | 8.6 ± 6.9 | 13.5 ± 8.7 | -4.90 | -9.3, -0.6 | *0.03 |
| Ludewig | 2.3 kg | 17.2 ± 9.5 | 25.9 ± 13.1 | -8.7 | -15.0, -2.4 | *0.007 | |
| Ludewig | 4.6 kg | 30.2 ± 17.6 | 46.3 ± 23.6 | -16.10 | -27.6, -4.6 | *0.006 | |
| Bandholm | 20% MVC | 18.86 ± 4.32 | 22.72 ± 10.43 | -3.86 | -11.24, 3.52 | 0.31 | |
| Bandholm | 27.5% MVC | 22.76 ± 5.3 | 28.47 ± 10.51 | -5.71 | -13.4, 1.98 | 0.15 | |
| Bandholm | 35% MVC | 30.28 ± 6.4 | 35.87 ± 13.73 | -5.59 | -15.49, 4.31 | 0.27 | |
| Ludewig | 61-90° | No load | 14.7 ± 7.7 | 20.9 ± 10.3 | -6.20 | -11.24, -1.16 | *0.02 |
| Ludewig | 2.3 kg | 29.4 ± 11.2 | 38.7 ± 18.6 | -9.30 | -17.81, -0.79 | *0.03 | |
| Ludewig | 4.6 kg | 53 ± 19.5 | 64.9 ± 29 | -11.90 | -25.6, 1.8 | 0.09 | |
| Ludewig | > 90° | No load | 28.1 17.1 | 33.1 16.9 | -5.00 | -14.4, 4.42 | 0.30 |
| Ludewig | 2.3 kg | 45.1 17.2 | 55.4 22.9 | -10.30 | -21.5, 0.9 | 0.07 | |
| Ludewig | 4.6 kg | 79.2 28.5 | 89.0 36.5 | -9.8 | -28.0, 8.4 | 0.29 | |
| Bandholm | 20% MVC | 34.7 8.2 | 36.9 14.7 | -2.23 | -15.6, 9.1 | 0.70 | |
| Bandholm | 27.5% MVC | 45.9 15.2 | 47.5 21.3 | -1.58 | -18.7, 15.5 | 0.86 | |
| Bandholm | 35% MVC | 55.6 16.2 | 61.8 22.3 | -6.2 | -24.1, 11.9 | 0.50 | |
| Eccentric Scaption | |||||||
| Bandholm | < 60° | 20% MVC | 11.7 3.0 | 14.9 9.0 | -3.27 | -9.5, 2.9 | 0.30 |
| Bandholm | 27.5% MVC | 17.5 4.0 | 21.5 7.9 | -4.00 | -9.8, 1.8 | 0.17 | |
| Bandholm | 35% MVC | 21.3 6.7 | 28.7 9.0 | -7.41 | -14.6, -0.1 | 0.05 | |
| Bandholm | > 90° | 20% MVC | 28.9 7.75 | 29.0 11.0 | -0.12 | -8.9, 8.7 | 0.98 |
| Bandholm | 27.5% MVC | 37.8 9.7 | 39.2 16.6 | -1.41 | -14,0, 11.2 | 0.83 | |
| Bandholm | 35% MVC | 44.6 11.2 | 52.7 19.7 | -8.07 | -22.9, 6.7 | 0.29 | |
| DeMorais Faria |
160-0° | No load | 21.3 12.6 | 28.6 8.3 | -7.30 | -16.7, 2.05 | 0.13 |
| Wheelchair transfers | |||||||
| Findley | 0-30 | Towards | 43.8 63.5 | 44.8 21.5 | -1.00 | -46.8, 44.8 | 0.97 |
| 31-60 | unaffected | 32.1 34.2 | 47.8 50 | -15.70 | -49.5, 18.1 | 0.36 | |
| > 61 | limb | 43.8 38.9 | 36.2 47 | -1.40 | -52.8, 50.0 | 0.96 | |
| 0-30 | Towards | 40 30.8 | 22.4 21 | 17.6 | -10.3, 45.5 | 0.22 | |
| 31-60 | affected | 27.5 40.9 | 23.1 28.1 | 4.40 | -24.7, 33.5 | 0.77 | |
| > 61 | limb | 9.6 11.7 | 13 10.1 | -3.40 | -14.2, 7.4 | 0.54 | |