Acceptance of increased daily dietary fibre in healthy participants: A preliminary feasibility study to inform a larger RCT to test the efficacy of barley on body composition and weight loss.
- Conditions
- Overweight & ObesityDiet and Nutrition - Obesity
- Registration Number
- ACTRN12621001440819
- Lead Sponsor
- Queensland University of Technology
- Brief Summary
We investigated how three weeks of increased fibre intake would affect appetite and satiety (feelings of hunger and fullness), and gastrointestinal comfort. Our results suggest that three weeks of increased fibre intake (a) does not affect appetite or satiety, and (b) increases the frequency of breaking or passing wind and increases stool consistency. Additionally, the baseline fibre consumption and the method of increased fibre increase (i.e., gradual increase or immediate increase) did not change the feelings of hunger and fullness. The results also indicated that the increase of additional fibre was perceived as being beneficial to overall wellbeing, influenced feelings of hunger and caused some minor short term gastrointestinal symptoms that disappeared after getting used to the product. The findings of this study further confirm that increasing fibre intake is a safe intervention that presents no additional risks over typical increased dietary fibre intake. Ultimately, we will use the feedback gathered from participants of this study and use it to help inform the methods for our next study which will use the same supplements and investigate its effect on weight loss and markers of health.
- Detailed Description
Not available
Recruitment & Eligibility
- Status
- Completed
- Sex
- All
- Target Recruitment
- 38
1.Aged between 18 and 50 years of age;
2.Male or female;
3.Have a body mass index between 18.5-34.9 Kg.m-2.
1.Have a history or presence of a comorbid disease for which diet modifications may be contraindicated (e.g., diabetes, metabolic syndrome, polycystic ovary syndrome, hypoproteinemia).
2.Have a history of eating disorders.
3.Have a history of bariatric surgery.
4.Currently taking, or have taken in the last 3 months, dietary supplements for thyroid, hyperlipidemia, hypoglycaemia, or weight loss supplements (e.g., ephedra, thermogenic compounds).
5.Not have participated in a diet or clinical trial in the last 6 months.
6.Females only: pre-menopausal, menopausal, are currently pregnant or are currently breastfeeding.
7.Mental or cognitive impairment that limits ability to understand test instructions.
Study & Design
- Study Type
- Interventional
- Study Design
- Not specified
- Primary Outcome Measures
Name Time Method Appetite & Satiety via 5-factor Hunger and Fullness Questionnaire [Start of study (baseline) and after week 1, week 2 & week 3.];Gastrointestinal comfort via Gastrointestinal response questions developed by Chen et al. 2008. <br><br>Chen, H.L., Cheng, H.C., Wu, W.T., Liu, Y.J., & Liu, S.Y. (2008). Supplementation of konjac glucomannan into a low-fiber Chinese diet promoted bowel movement and improved colonic ecology in constipated adults: A placebo-controlled, diet-controlled trial. Journal of the American College of Nutrition, 27, 102–108.[Start of study (baseline) and after week 1, week 2 & week 3.]
- Secondary Outcome Measures
Name Time Method Acceptability via interview <br>'How acceptable were the flakes? (1-10 scale, 1 not acceptable to 10 very acceptable).'[End of trial - ~1 week post-intervention];Feasibility via interview<br>'Did you find it easy to include?<br>Did you find it difficult and why?'<br>[End of trial - ~1 week post-intervention];Fibre intake via NHANES 26-item Dietary Screener Questionnaire[Start of study (baseline)]