Denne siden ble automatisk oversatt og nøyaktigheten av oversettelsen er ikke garantert. Vennligst referer til engelsk versjon for en kildetekst.

Low-FODMAP vs Lactose-Gluten-Free Diet in Patients With Irritable Bowel Syndrome

21. juli 2026 oppdatert av: Antalya Bilim University

Comparative Effects of Low-FODMAP and Lactose-Gluten-Free Diets on Gastrointestinal Symptoms and Mental Health in Irritable Bowel Syndrome: A Randomized Crossover Trial

Irritable bowel syndrome (IBS) is a common functional gastrointestinal disorder that substantially affects quality of life. Dietary therapy is considered one of the primary treatment approaches; however, the optimal sequence of dietary interventions remains unclear. This randomized crossover trial was designed to compare the effects of a low-FODMAP diet and a lactose-free, gluten-free diet on gastrointestinal symptoms, psychological status, anthropometric measurements, and biochemical parameters in adults with IBS. Participants were randomly assigned to one of two dietary sequences, with each intervention lasting four weeks and separated by a one-week washout period. Outcomes were assessed using validated symptom and psychological questionnaires together with anthropometric and biochemical measurements before and after each intervention period.

Studieoversikt

Status

Fullført

Forhold

Intervensjon / Behandling

Detaljert beskrivelse

This randomized crossover trial was designed to evaluate the comparative effects of a low-FODMAP diet and a lactose- and gluten-free diet in adults with irritable bowel syndrome (IBS). Participants were randomly assigned to one of two dietary sequences, with each intervention lasting 4 weeks and separated by a 1-week washout period. Gastrointestinal symptoms, psychological outcomes, anthropometric measurements, and biochemical parameters were assessed before and after each intervention period.

Studietype

Intervensjonell

Registrering (Faktiske)

72

Fase

  • Ikke aktuelt

Kontakter og plasseringer

Denne delen inneholder kontaktinformasjon for de som utfører studien, og informasjon om hvor denne studien blir utført.

Studiesteder

  • Tyrkia (Türkiye)
      • Istanbul, Tyrkia (Türkiye)
        • Istanbul University-Cerrahpaşa, Cerrahpaşa Faculty of Medicine, Department of Gastroenterology

Deltakelseskriterier

Forskere ser etter personer som passer til en bestemt beskrivelse, kalt kvalifikasjonskriterier. Noen eksempler på disse kriteriene er en persons generelle helsetilstand eller tidligere behandlinger.

Kvalifikasjonskriterier

Alder som er kvalifisert for studier

  • Voksen

Tar imot friske frivillige

Nei

Beskrivelse

Inclusion Criteria:

  • Adults aged 18-64 years.
  • Diagnosis of Irritable Bowel Syndrome according to the Rome III criteria.
  • Ability and willingness to comply with the dietary intervention.
  • Written informed consent provided.

Exclusion Criteria:

  • Pregnancy or lactation.
  • Diabetes mellitus.
  • Organic gastrointestinal disease.
  • Current follow-up for cardiologic, neurologic, oncologic, or psychiatric disorders.
  • Following a therapeutic diet within 1 month before enrollment.

Studieplan

Denne delen gir detaljer om studieplanen, inkludert hvordan studien er utformet og hva studien måler.

Hvordan er studiet utformet?

Designdetaljer

  • Primært formål: Behandling
  • Tildeling: Randomisert
  • Intervensjonsmodell: Crossover-oppdrag
  • Masking: Ingen (Open Label)

Våpen og intervensjoner

Deltakergruppe / Arm
Intervensjon / Behandling
Eksperimentell: Low-FODMAP → Lactose- and Gluten-Free Diet
Participants received the low-FODMAP diet for 4 weeks, followed by a 1-week washout period and then the lactose- and gluten-free diet for 4 weeks.
Atferdsmessig: Low-FODMAP Diet
Participants followed a low-FODMAP diet for 4 weeks under the supervision of a dietitian.
Atferdsmessig: Lactose- and Gluten-Free Diet
Participants followed a lactose- and gluten-free diet for 4 weeks under the supervision of a dietitian.
Eksperimentell: Lactose- and Gluten-Free Diet → Low-FODMAP
Participants received the lactose- and gluten-free diet for 4 weeks, followed by a 1-week washout period and then the low-FODMAP diet for 4 weeks.
Atferdsmessig: Low-FODMAP Diet
Participants followed a low-FODMAP diet for 4 weeks under the supervision of a dietitian.
Atferdsmessig: Lactose- and Gluten-Free Diet
Participants followed a lactose- and gluten-free diet for 4 weeks under the supervision of a dietitian.

Hva måler studien?

Primære resultatmål

Resultatmål
Tiltaksbeskrivelse
Tidsramme
Change in Irritable Bowel Syndrome Symptom Severity Score (IBS-SSS)
Tidsramme: Baseline, Week 4, and Week 9
Change in Irritable Bowel Syndrome Symptom Severity Score (IBS-SSS). The IBS Symptom Severity Score assessed the severity of IBS symptoms based on four questions, scoring between 0 and 100 points for each symptom. A total score of 75-174 points indicated mild IBS, 175-299 points indicated moderate IBS, and >300 points indicated severe IBS.
Baseline, Week 4, and Week 9

Sekundære resultatmål

Resultatmål
Tiltaksbeskrivelse
Tidsramme
Change in Gastrointestinal Symptom Rating Scale (GSRS) score
Tidsramme: Baseline, Week 4, and Week 9
Change in gastrointestinal symptom severity assessed using the Gastrointestinal Symptom Rating Scale (GSRS). The GSRS assessed gastrointestinal symptoms based on 15 items categorized into five subdimensions: abdominal pain, reflux, diarrhea, indigestion, and constipation. The scale measures symptom severity over the past week, with higher scores indicating more severe symptoms.
Baseline, Week 4, and Week 9
Change in Hospital Anxiety and Depression Scale (HADS) score
Tidsramme: Baseline, Week 4, and Week 9
Change in anxiety and depression symptoms assessed using the Hospital Anxiety and Depression Scale (HADS). The HADS is a 14-question scale that identifies anxiety and depression risks. The scale is divided into two subscales, one for anxiety and one for depression, with scores ranging from 0 to 21. Scores between 0-7 are considered normal, 8-10 borderline, and ≥11 indicates anxiety and/or depression.
Baseline, Week 4, and Week 9
Change in body weight
Tidsramme: Baseline, Week 4, and Week 9
Change in body weight measured in kilograms.
Baseline, Week 4, and Week 9
Change in body mass index
Tidsramme: Baseline, Week 4, and Week 9
Change in body mass index (BMI), calculated as weight in kilograms divided by height in meters squared.
Baseline, Week 4, and Week 9

Samarbeidspartnere og etterforskere

Det er her du vil finne personer og organisasjoner som er involvert i denne studien.

Sponsor

Antalya Bilim University

Etterforskere

  • Hovedetterforsker: Hatice Kübra Aras, Antalya Bilim University

Studierekorddatoer

Disse datoene sporer fremdriften for innsending av studieposter og sammendragsresultater til ClinicalTrials.gov. Studieposter og rapporterte resultater gjennomgås av National Library of Medicine (NLM) for å sikre at de oppfyller spesifikke kvalitetskontrollstandarder før de legges ut på det offentlige nettstedet.

Studer hoveddatoer

Studiestart (Faktiske)

1. september 2020

Primær fullføring (Faktiske)

25. november 2021

Studiet fullført (Faktiske)

20. januar 2022

Datoer for studieregistrering

Først innsendt

16. juli 2026

Først innsendt som oppfylte QC-kriteriene

21. juli 2026

Først lagt ut (Faktiske)

23. juli 2026

Oppdateringer av studieposter

Sist oppdatering lagt ut (Faktiske)

23. juli 2026

Siste oppdatering sendt inn som oppfylte QC-kriteriene

21. juli 2026

Sist bekreftet

1. juli 2026

Mer informasjon

Begreper knyttet til denne studien

Nøkkelord

Ytterligere relevante MeSH-vilkår

Andre studie-ID-numre

  • 2020/034

Plan for individuelle deltakerdata (IPD)

Planlegger du å dele individuelle deltakerdata (IPD)?

NEI

Legemiddel- og utstyrsinformasjon, studiedokumenter

Studerer et amerikansk FDA-regulert medikamentprodukt

Nei

Studerer et amerikansk FDA-regulert enhetsprodukt

Nei

Denne informasjonen ble hentet direkte fra nettstedet clinicaltrials.gov uten noen endringer. Hvis du har noen forespørsler om å endre, fjerne eller oppdatere studiedetaljene dine, vennligst kontakt register@clinicaltrials.gov. Så snart en endring er implementert på clinicaltrials.gov, vil denne også bli oppdatert automatisk på nettstedet vårt. .

Abonnere