Stimulating fiber intake by personalized dietary advice

Completed

Conditions: In ogenschijnlijk gezonde mensen (met een lage vezelinname) wordt gekeken of gepersonaliseerd voedingsadvies daadwerkelijk leidt tot een verhoogde vezelinname. Daaraan gekoppeld wordt gekeken of stoelgang en welbevinden verbetert, maar dit zijn niet de primaire uitkomstmaten.
nvt
10017943

Registration Number: NL-OMON45882

Lead Sponsor: Wageningen Universiteit

Brief Summary: Not available

Detailed Description: Not available

Recruitment & Eligibility

Status: Completed

Sex: Not specified

Target Recruitment: 100

Inclusion Criteria

- Age *18 years.
- Apparently healthy: no gastrointestinal complaints, no food allergies and no medication that can influence the outcome of the study (see exclusion criteria).
- Relatively low fiber intake: which is assessed by a short fiber intake screening questionnaire (score ranging from 1 to 22). Females with a score *13 and males with a score *15 will be included in the study.
- Living in the surroundings of Wageningen (max. 50 km).
- In possession of a mobile phone with android *4.4 or iOS system *9 to use apps.
- Signed informed consent.

Exclusion Criteria

- Any digestive tract disorder that is expected to interfere with the study outcomes, such as chronic constipation or diarrhea, Crohn*s Disease, Ulcerative Colitis, Irritable Bowel Syndrome, Coeliac disease.
- Diagnosis of Diabetes Mellitus, since the change in carbohydrate intake may interfere with medication usage.
- Currently following a strict diet and unwilling or unable to change; for example a gluten free diet or a *crash diet* using meal substitutes.
- Use of medication that can interfere with the study outcomes, including laxatives, diuretics, antidepressants, codeine, antibiotics or fiber supplements
- Female subjects: currently pregnant or breastfeeding, or intending to become pregnant during the study, as this can affect stool patterns and well-being.
- Simultaneously participating in another study.
- Unwilling or unable to fulfill the study criteria.

Study & Design

Study Type: Interventional

Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
<p>Primary endpoint is dietary fiber intake, which will be assessed using an Food<br /><br>Frequency Questionnaire and 24hr recalls. Fecal microbiota composition and<br /><br>metabolite levels will be used as an objective marker for fiber intake. </p><br>

Secondary Outcome Measures

Name	Time	Method
<p>Secondary parameters include stool pattern, well-being, hunger, satiety and<br /><br>body weight. Furthermore, psychological measurements will give insight into why<br /><br>the PDA was (not) effective. </p><br>