Table 3.
Changes in EMG amplitudes in percentage of MVIC for each muscle by intervention conditions for each group.
| Parameter | HC group (n = 17) |
HO group (n = 17) |
P | ||
|---|---|---|---|---|---|
| Pre-intervention | Post- intervention |
Pre-intervention | Post-intervention | ||
| RA, % | 16.8 ± 15.1 | 5.8 ± 3.4* | 19.9 ± 17.7 | 8.65 ± 7.53* | >.05 |
| EO, % | 18.1 ± 15.4 | 8.2 ± 4.9† | 18.5 ± 9.6 | 9.3 ± 5.5† | >.05 |
| TrA-IO, % | 22.8 ± 15.8 | 15.3 ± 10.5* | 16.8 ± 13.2 | 13.8 ± 12.5* | >.05 |
| ES, % | 38.8 ± 28.8 | 25.0 ± 17.5* | 39.0 ± 27.4 | 24.5 ± 9.1* | >.05 |
Values are mean ± SD.
EO = external oblique, ES = erector spinae, HC = heel contact, HO = heel off, MVIC = maximal voluntary isometric contraction, RA = rectus abdominis, TrA-IO = transverse abdominis and internal oblique.
*
Significant change (P < .01) within the group by Wilcoxon signed-rank test.
†
Significant change (P < .01) within the group by a paired t test.