Reliability of a Food Frequency Questionnaire in the Assessment of Dietary Intake Including FODMAPs in Different Populations, and Relationship With IBS Symptoms and the Degree of Self-assessed Physical Activity
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Could this be for you?
Answer for yourself. This is not a decision: only the study team can say whether you can take part.
- Are you between 18 and 65 years old?
Source: NCT05293769, who can take part
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- How often do I need to come in, and for how long each time?
- Are travel costs paid?
- Can I keep my own doctor?
- What happens if I want to stop?
Contact the study team: see the registry record → Contacts and Locations
Print a page for my doctorTrial details
- Who runs it
- Universitair Ziekenhuis Brussel
- Trial code
- NCT05293769
- Record updated
- 18 December 2025
- Original description
During an online assessment participants will fill in questionnaires evaluating demographic data, psychological variables, the degree of self-assessed physical activity and symptoms of irritable bowel. Dietary intake will be assessed by a newly developed food frequency questionnaire (FFQ) and a 4 days food diary. In order to validate the FFQ in different populations, participants will be recruited from university students, staff of UZ Brussel and VUB, and from the community by advertisement (including social media). IBS patients will be recruited from the gastro-enterology outpatient clinic.Read full original descriptionShow less
Reliability of a Food Frequency Questionnaire in the Assessment of Dietary Intake Including FODMAPs (Fermentable Oligosaccharides, Disaccharides, Monosaccharides and Polyols) in Different Populations, and Relationship With IBS (Inflammatory Bowel Syndrome) Symptoms and the Degree of Self-assessed Physical Activity
During an online assessment participants will fill in questionnaires evaluating demographic data, psychological variables, the degree of self-assessed physical activity and symptoms of irritable bowel. Dietary intake will be assessed by a newly developed food frequency questionnaire (FFQ) and a 4 days food diary. In order to validate the FFQ in different populations, participants will be recruited from university students, staff of UZ Brussel and VUB, and from the community by advertisement (including social media). IBS patients will be recruited from the gastro-enterology outpatient clinic.
Inclusion: 18 - 65 years; Provide written informed consent; Living in Belgium.
Exclusion: Diet < 8 weeks prior to participation; Chemotherapy in the past 6 months; Infectious gastro-enteritis in the past 6 months (infectious gastro-enteritis defined as the concurrent presence of one of the following signs during 2 or more consecutive days: fever, vomiting, sudden onset of diarrhea, hospitalization because of these symptoms); Previous abdominal surgery (appendectomy and cholecystectomy are allowed); Use of illicit drugs; Intake of drugs with known major gastro-intestinal side effects; Initiation of neuromodulators less than 3 months before participation. Neuromodulators are allowed when taken at a stable dose for at least 3 months; Known or suspected eating disorder; Major psychiatric disorder; Known gastro-intestinal disease (IBS is allowed); Any malignancy in the past 3 years (basocellular carcinoma is allowed); Alcohol abuse defined as > 14 U per week; Pregnancy.