Table 2.
Measured muscle properties.
| Surgical limb | Non-surgical limb | n | P | |
|---|---|---|---|---|
| Knee extension force | ||||
| Seated 90°, kg | 10.70 (5.59) | 21.34 (6.02) | 8 | <0.001** |
| Supine 35°, kg | 10.39 (5.36) | 14.05 (5.64) | 4 | 0.076 |
| Muscle thickness | ||||
| Vastus lateralis, cm | 1.52 (0.45) | 2.19 (0.54) | 8 | <0.001** |
| Rectus femoris, cm | 1.70 (0.67) | 2.56 (0.48) | 4 | 0.126 |
| Neuromuscular activation | ||||
| MVIC - vastus lateralis | ||||
| RoA50, s−1 | 1.00 (0.84) | 1.41 (0.90) | 4 | 0.630 |
| RoA100, s−1 | 0.89 (0.84) | 1.18 (0.76) | 4 | 0.716 |
| RoA150, s−1 | 0.91 (0.78) | 1.11 (0.69) | 4 | 0.779 |
| RoA200, s−1 | 0.79 (0.71) | 0.99 (0.51) | 4 | 0.709 |
| MVIC - rectus femoris | ||||
| RoA50, s−1 | 0.93 (0.72) | 0.93 (0.49) | 4 | 0.998 |
| RoA100, s−1 | 0.95 (0.69) | 0.94 (0.48) | 4 | 0.994 |
| RoA150, s−1 | 0.98 (0.69) | 0.96 (0.49) | 4 | 0.963 |
| RoA200, s−1 | 0.99 (0.60) | 0.94 (0.58) | 4 | 0.925 |
| MVIC - Knee CCI | 0.51 (0.28) | 0.61 (0.09) | 4 | 0.391 |
| Step-Up - vastus lateralis | ||||
| RoA50, s−1 | 5.44 (5.09) | 9.35 (2.71) | 3 | 0.312 |
| RoA100, s−1 | 3.68 (2.34) | 6.81 (1.23) | 3 | 0.187 |
| RoA150, s−1 | 3.25 (1.07) | 5.29 (0.96) | 3 | 0.192 |
| RoA200, s−1 | 2.85 (0.36) | 4.13 (0.75) | 3 | 0.159 |
| Step-Up - rectus femoris | ||||
| RoA50, s−1 | 8.85 (6.66) | 14.41 (1.75) | 3 | 0.276 |
| RoA100, s−1 | 5.25 (1.90) | 8.19 (1.08) | 3 | 0.152 |
| RoA150, s−1 | 3.52 (0.42) | 5.60 (0.51) | 3 | 0.038* |
| RoA200, s−1 | 2.64 (0.10) | 4.16 (0.25) | 3 | 0.016* |
| Step-up - Knee CCI | 0.79 (0.46) | 0.41 (0.14) | 3 | 0.369 |
Mean (standard deviation (SD)). CCI, co-contraction index; MVIC, maximal voluntary isometric contraction measured in supine with knees flexed to 35°; RoA, rate of muscle activation.