Table 1.
Muscle activation levels expressed as percentage of the Maximum Voluntary Contraction for bridging exercises on different surfaces.
| Column # | 1 | 2 | 3 | 4 | 5 |
| Exercise | Pr Br Floor | Pr Br Ball | Side Bridge | Su Br Ball | Su Br Floor |
| IO Avg | 29.5 | 39.8 | 42.5 | 19.7 | 12.3 |
| Stdev | 18.8 | 23.9 | 25.2 | 15.8 | 9.5 |
| Different From* | - | 4,5 | 4,5 | 2,3 | 2,3 |
| RA Avg | 26.6 | 55.9 | 24.4 | 6.05 | 5.84 |
| Stdev | 11.1 | 28.8 | 11.7 | 1.3 | 1.1 |
| Different From* | 2,4,5 | 1,3,4,5 | 2,4,5 | 1,2,3 | 1,2,3 |
| EO Avg | 44.6 | 62.5 | 46.1 | 10.6 | 7.8 |
| Stdev | 14.8 | 26.3 | 15.4 | 5.7 | 6.3 |
| Different From* | 2,4,5 | 1,3,4,5 | 2,4,5 | 1,2,3 | 1,2,3 |
| ES Avg | 4.98 | 5.00 | 25.7 | 27.4 | 25.01 |
| Stdev | 1.05 | 1.46 | 11.3 | 7.56 | 9.02 |
| Different From* | 3,4,5 | 3,4,5 | 1,2 | 1,2 | 1,2 |
* This row indicates which other exercise the myoelectric signal for the respective column is statistically different (p < .05) from. (Avg = Average muscle activity in % MVC, Stdev = Standard deviation, IO = Internal Oblique, RA = Rectus Abdominis, EO = External Oblique, ES = Erector Spinae. Pr Br = Prone Bridge, Su Br = Supine Bridge.