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

Site		CS	RH†	NS‡
Diurnal	+15	1.1 (0.2)*	2.3 (0.6)	1.1 (0.8)**
Nocturnal	+15	0.3 (0.1)*	1.3 (0.3)	1.6 (0.9)

*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 http://www.gutjnl.com/supplemental.