1. Digestion-resistant maltodextrin effects on colonic transit time and stool weight: a randomized controlled clinical study.
- Author
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Abellán Ruiz, María, Barnuevo Espinosa, María, Contreras Fernández, Carlos, Luque Rubia, Antonio, Sánchez Ayllón, Francisca, Aldeguer García, Miriam, García Santamaría, Carlos, and López Román, Francisco
- Subjects
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FECES , *ABDOMINAL radiography , *ANALYSIS of covariance , *ANALYSIS of variance , *CHI-squared test , *CONFIDENCE intervals , *DEFECATION , *DIETARY fiber , *GASTROINTESTINAL motility , *NUTRITIONAL assessment , *PROBABILITY theory , *QUESTIONNAIRES , *RESEARCH funding , *STATISTICAL sampling , *SELF-evaluation , *STATISTICS , *T-test (Statistics) , *TIME , *STATISTICAL power analysis , *DATA analysis , *STATISTICAL significance , *BODY mass index , *RANDOMIZED controlled trials , *PRE-tests & post-tests , *REPEATED measures design , *BLIND experiment , *FOOD diaries , *DATA analysis software , *DESCRIPTIVE statistics , *PHYSIOLOGY - Abstract
Purpose: Increased awareness of the importance of dietary fibre has led to increased interest in 'functional' fibre components like digestion-resistant maltodextrin (RMD). This randomized, placebo-controlled, double-blind study assessed the effects of RMD in the colonic transit time (CTT) and defecation characteristics (frequency, stool volume and consistency). Methods: Sixty-six healthy adult volunteers (32 men) who did not have a daily defecation habit had a 7-day run-in period before the 21-day intervention period with RMD or placebo. CTT and segmental CTT (SCTT) were assessed by a single abdominal X-ray film taken at the end of both periods after radiopaque marker ingestion. Defecation characteristics and intestinal functions were also assessed, which were self-reported by patients. Intragroup comparisons were evaluated by Student's paired t test, Bonferroni test and Chi-square test, while time comparisons by analysis of variance (ANOVA) and time-by-treatment interaction by repeated-measures ANOVA. Results: Fifty-seven subjects were assessed for CTT (placebo, n = 28; RMD, n = 29). In the RMD group, the total CTT, left SCTT and rectosigmoidal SCTT decreased significantly compared to baseline ( p < 0.01 each; −13.3, −4.7, −8.7 h, respectively). Significant differences between groups were observed in total CTT and left SCTT. Significant time-by-treatment interaction was observed in the RMD group for stool volume ( p = 0.014), increasing 56 % compared to baseline ( p < 0.01), while remained unchanged in the placebo group. Stool consistency was improved only in the RMD group ( p < 0.01). No adverse effects related to study products were observed. Conclusions: The results show that RMD improved CTT, stool volume, stool consistency and some intestinal functions in a healthy population. [ABSTRACT FROM AUTHOR]
- Published
- 2016
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