Table 5.
Efficacy variables following intake of placebo, wheat bran extract (WBE) at 30 g/d or oligofructose at 30 g/d
(Mean values and standard deviations)
| Placebo treatment period | 30 g/d WBE treatment period | 30 g/d oligofructose treatment period | P* | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Mean | sd | Mean | sd | Mean | sd | P1 | P2 | P3 | P4 | |
| Dietary analysis | ||||||||||
| Energy intake | 0·795 | 0·786 | 0·882 | 0·984 | ||||||
| kcal | 2385·0 | 595·7 | 2300·2 | 672·0 | 2313·9 | 505·3 | ||||
| kJ | 9978·8 | 2492·4 | 9624·0 | 2811·6 | 9681·4 | 2114·2 | ||||
| % Energy from proteins | 16·0 | 4·1 | 16·0 | 3·9 | 15·7 | 3·7 | 0·769 | 1·000 | 0·809 | 0·798 |
| % Energy from carbohydrates | 52·2 | 5·7 | 53·9 | 6·8 | 53·3 | 7·3 | 0·539 | 0·501 | 0·879 | 0·810 |
| % Energy from lipids | 31·8 | 7·1 | 30·2 | 7·8 | 31·0 | 7·0 | 0·463 | 0·466 | 0·972 | 0·621 |
| Fibre content (g) | 24·0 | 12·8 | 50·8 | 10·0 | 51·8 | 13·3 | 0·000 | 0·000 | 0·000 | 0·968 |
| Biochemical parameters of faeces | ||||||||||
| Stool pH | 7·3 | 0·4 | 6·8 | 0·8 | 6·9 | 0·8 | 0·016 | 0·010 | 0·060 | 0·805 |
| Stool moisture concentration (%) | 71·4 | 5·0 | 74·1 | 6·2 | 75·7 | 5·1 | 0·003 | 0·039 | 0·001 | 0·451 |
| Faecal output (g/d) | 162·3 | 105·4 | 183·4 | 114·4 | 200·7 | 122·2 | 0·232 | 0·457 | 0·222 | 0·879 |
| Bowel habits | ||||||||||
| Stool frequency | 1·2 | 0·3 | 1·1 | 0·3 | 1·2 | 0·4 | 0·541 | 0·601 | 1·000 | 0·593 |
| Stool consistency | 3·8 | 0·9 | 4·2 | 1·2 | 4·2 | 1·0 | 0·201 | 0·224 | 0·285 | 0·989 |
| Bristol composite measure | 3·7 | 0·7 | 4·2 | 1·2 | 4·1 | 0·9 | 0·048 | 0·038 | 0·135 | 0·854 |
* P1 is the P value of the conditional F test for overall significant treatment-related effects; P2, P3 and P4 are the P values for the comparison between 30 g/d WBE and placebo, 30 g/d oligofructose and placebo, and 30 g/d WBE and 30 g/d oligofructose, respectively.