Table 2. Mean (±SD) normalized EMG (percentage of maximum voluntary contraction) of the erector
spinae (ES) and multifidus (MF) in injured and uninjured athletes.
|
Knee
angle
(°) |
ES |
|
MF |
|
| Uninjured |
Injured |
Uninjured |
Injured |
| Passive |
0 |
5.92 ±
3.88 |
9.53 ±
5.99* |
8.12 ±
3.41 |
10.01 ±
4.04* |
| 45 |
5.55
± 3.72 |
9.74
± 5.83* |
8.80
± 4.85 |
9.15
± 5.03* |
| 90 |
3.86 ±
1.97 |
8.47 ±
5.16* |
6.63 ±
4.00 |
7.31 ±
3.51* |
| Active |
0 |
22.30
± 12.84^ |
28.79
± 15.56^ |
26.85
± 9.20^ |
34.21
± 11.61^ |
| 45 |
21.74 ±
11.60 |
26.00 ±
18.13 |
26.50 ±
11.60 |
30.82 ±
16.87 |
| 90 |
17.39
± 8.13 |
17.62
± 11.75 |
21.92
± 12.35 |
23.93
± 13.79 |
* significantly greater compared to the uninjured group,^ values collapsed for groups greater compared to the active knee flexion test at 90°;# values collapsed for groups greater than values at 0, 45 and 90° active knee flexion tests, p < 0.05.
