Table 1. Thicknesses (mm) at rest and during NMES.
| Muscle | Rest | NMES protocol | ||
|---|---|---|---|---|
| A | B | A+B | ||
| SM | 12.7 (2.1) | 13.1* (1.6) | 13.9* (2.0) | 13.9* (1.8) |
| DM | 11.2 (1.6) | 11.4* (2.1) | 12.2* (2.0) | 12.3* (2.3) |
| OE | 5.2 (2.1) | 7.3* (2.9) | 5.5 (2.1) | 7.1* (3.0) |
| OI | 7.8 (1.8) | 9.1* (2.1) | 7.7 (1.5) | 8.8* (2.1) |
| TrA | 3.0 (0.8) | 3.7* (1.1) | 3.2 (0.7) | 3.7* (1.0) |
Values are means (± standard deviations). NMES: neuromuscular electrical stimulation. A: stimulation of abdominal muscles, B: stimulation of lumbar muscles, A+B: simultaneous stimulation of abdominal and lumbar muscles. SM: superficial lumbar mutifidus muscle, DM: deep lumbar mutifidus muscle, OE: obliquus externus muscle, OI: obliquus internus muscle, TrA: transversus abdominis muscle
*Significantly increased compared to the resting state, p < 0.05