Absolute values for proximal oesophageal pain thresholds before (T0) and after (T60, T90 and T120) acid infusion with (a) sham and (b) deep breathing
| T0 | T60 | T90 | T120 | |
|---|---|---|---|---|
| a. Pain threshold in study subjects with sham breathing | ||||
| Pain thresholds (mean, SD, mA) | 49.3 (20.7) | 36.0 (17.1) | 34.3 (18.1) | 34.0 (16.2) |
| b. Pain threshold in study subjects with deep breathing | ||||
| Pain thresholds (mean, SD, mA) | 46.2 (18.3) | 44.8 (20.1) | 45.1 (19.9) | 45.1 (20.3) |
Mixed effects regression showed a coefficient of effect for deep breathing of 9.94 (CI 8.3 to 11.6), p=0.0001.