Table 2.
Characteristics of propagating motor patterns before and after a meal. The well characterized high amplitude propagating sequences were not included in this table.
| Pre-Meal | Post – meal | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Cyclic | Short Single | Long Single | Cyclic | Short Single | Long Single | |||||
| Antegrade | Retrograde | Antegrade | Retrograde | Antegrade | Retrograde | Antegrade | Retrograde | |||
| Number/2hr | 6.6 ± 11.4 | 5.6 ± 5.4 | 4.3 ± 3.7 | 9.0 ± 7.3 | 3.0 ± 1.4 | 7.5 ± 2.1 | 34.7 ± 19.8* | 2.3 ± 1.9 | 7.0 ± 4.2 | 2.6 ± 1.7 |
| Velocity (cm/s) | 1.0 ± 1.3 | 0.7 ± 0.6 | 0.6 ± 0.4 | 0.3 ± 0.1 | 1.8 ± 1.2 | 0.8 ± 0.3 | 0.9 ± 0.4 | 0.5 ± 0.3 | 0.6 ± 0.3 | 2.0 ± 0.8 |
| Extent of propagation (cm) | 4.3 ± 0.8 | 4.8 ± 1.4 | 6.2 ± 2.8 | 6.0 ± 2.1 | 40.8 ± 8.4 | 6.6 ± 2.0 | 8.1 ± 2.6** | 8.4 ± 1.9 | 8.3 ± 2.0 | 44.4 ± 13.7 |
| Amplitude (mmHg) | 27.9 ± 11 | 40.2 ± 22.2 | 50.2 ± 24.7 | 35.6 ± 14.6 | 43.8 ± 12.7 | 51.5 ± 13.6 | 48.6 ± 19.9 | 56.4 ± 44 | 39.9 ± 10.8 | 52.3 ± 17.9 |
| Duration of pressure waves (s) | 10.9 ± 1.3 | 10.6 ± 1.4 | 14.3 ± 4.7 | 14.1 ± 4.8 | 9.3 ± 1.3 | 11.4 ± 1.6 | 10.2 ± 1.7 | 13.5 ± 4.2 | 11.9 ± 2.0 | 9.8 ± 1.3 |
*
p < 0.001 (significant increase after the meal)
**
p = 0.03 (significant increase after the meal)