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©The Author(s) 2015.
World J Gastroenterol. Aug 7, 2015; 21(29): 8952-8963
Published online Aug 7, 2015. doi: 10.3748/wjg.v21.i29.8952
Published online Aug 7, 2015. doi: 10.3748/wjg.v21.i29.8952
Table 2 Fiber intakes and effects on total stool weight, dry stool weight, percentage water in stool, stool frequency, and transit time
Source of intact cereal dietary fiber | |||
Wheat | Barley | Corn | |
Total stool weight | |||
Observations, n | 75 | 3 | 4 |
Fiber (g/d), mean ± SD or range | 15.2 ± 8.3 | 10.2-23 | 6.0-42 |
Total effect (g/d), mean ± SD or range | 65.4 ± 37.8 | 49.6-65 | 1.2-96.3 |
Average fecal bulking index, Δ in g/d stool weight per g/d fiber | 4.7 ± 2.7 | 3.6 ± 2.4 | 2.1 ± 1.5 |
Fecal bulking index by regression, Δ in g/d stool weight per g/d fiber | 3.67 ± 0.09b | - | - |
(3.50-3.84) | |||
Dry stool weight | |||
Observations, n | 40 | 1 | 3 |
Fiber (g/d), mean ± SD or range | 14.7 ± 8.5 | - | 6-42 |
Total effect (g/d), mean ± SD or range | 14.4 ± 9.4 | - | 4.8-31 |
Fecal bulking index by regression, Δ in g/d stool weight per g/d fiber | 0.75 ± 0.03b | - | 0.7-0.9 |
(0.69-0.82) | |||
Fecal water | |||
Observations, n | 30 | 3 | 2 |
Fiber (g/d), mean ± SD or range | 16.0 ± 7.4 | 10.2-23 | - |
Total effect by regression (∆% water), mean ± SD or range | 1.5 ± 2.1 | -1.8-10 | - |
Stool frequency | |||
Observations, n | 34 | 2 | 2 |
Fiber (g/d), mean ± SD or range | 13.6 ± 6.4 | - | - |
Total effect (times/d), mean ± SD or range | 0.34 ± 0.23 | - | - |
Frequency index by regression, Δ in times/d per g/d fiber | 0.004 ± 0.002a | - | - |
(0.003-0.078) | |||
Transit time | |||
Observations, n | 52 | 0 | 0 |
Fiber (g/d), mean ± SD | 14.8 ± 8,4 | - | - |
Δ in h per g/d fiber by regression (those with initial transit time between 24-48 h) | 0.78 ± 0.13b | - | - |
(0.53-1.04) | |||
Δ in h per g/d fiber by regression (those with initial transit time between 48-96 h) | -0.75 ± 0.04b | - | - |
(-0.84- -0.67) |
- Citation: de Vries J, Miller PE, Verbeke K. Effects of cereal fiber on bowel function: A systematic review of intervention trials. World J Gastroenterol 2015; 21(29): 8952-8963
- URL: https://www.wjgnet.com/1007-9327/full/v21/i29/8952.htm
- DOI: https://dx.doi.org/10.3748/wjg.v21.i29.8952