Table 1

 Effects of fibre supplementation on properties of bolus gas evacuations

ParameterStandard dietHigh fibre dietp Value
Bolus flow rate (ml/min)13.8 (0.6)14.7 (0.6)0.27
Bolus duration (s)5.4 (0.4)5.2 (0.4)0.66
Bolus volume (ml)68.2 (6.0)70.7 (4.2)0.66
Bolus pressure (mm Hg)13.3 (1.8)13.8 (1.9)0.72