Bioscience and Microflora
Online ISSN : 1349-8355
Print ISSN : 1342-1441
ISSN-L : 1342-1441
Effects of Ingested Fructooligosaccharides on Stool Frequency in Healthy Female Volunteers: A Placebo-Controlled Study
Shigeru TOMINAGAMasao HIRAYAMATakashi ADACHITakahisa TOKUNAGAHisakazu IINO
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1999 年 18 巻 1 号 p. 49-53

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The effects of ingested fructooligosaccharides (FOS) (3 g/day) and placebo on stool frequency and stool condition were investigated in healthy female volunteers. According to stratification analysis, the stool frequency during the period of FOS intake was: 1) higher than that during the period of non-intake comparing subjects with an inherent (non-intake period) stool frequency of ≤ 3 times/week; 2) higher than that during the period of placebo intake comparing those subjects with an inherent frequency of > 3 to le; 5 times/week; and 3) not higher or lower, with no significant differences observed between the three periods, comparing those subjects with an inherent frequency of > 5 times/week. Three statistical methods were applied in the analyses, and comparisons revealed that the non-parametric Wilcoxon signed rank-sum test was suitable in this study.

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