Table 2

 Frequency of high amplitude contractions (>50 mm Hg/h) during the day and night in control subjects (CS) and in those with rectal hypersensitivity (RH) and normal rectal sensation (NS), at the recording site +15 cm above the mid anal canal

*p<0.05, **p<0.01 versus RH.
†No nocturnal data, n = 6; ‡no nocturnal data, n = 5.
For high amplitude contraction activity at other levels, please refer to the Gut website at
Diurnal+151.1 (0.2)*2.3 (0.6)1.1 (0.8)**
Nocturnal+150.3 (0.1)*1.3 (0.3)1.6 (0.9)