NCT05680766

Brief Summary

This exploratory study's primary objective is the changes of irritable bowel syndrome (IBS) symptom severity by cardiovascular endurance training (CET) in relation to the baseline sedentary or non-active lifestyle. Secondary endpoints focus on the mechanisms associated with these changes. These mechanisms relate to dietary adaptations, changes in anxiety, depressive comorbidity, somatisation, alterations in the gut microbiome or metabolome, body composition and measures of cardiovascular fitness. Virtually all IBS guidelines mention lifestyle modifications as a management option. Research on the role of physical activity remains underassessed as compared to the other interventions. Therefore, an exploratory proof-of-concept study will investigate the influence of regular physical exercise on symptoms in a small group of IBS patients. This study will gather data on putative underlying mechanisms related to dietary factors, faecal microbiome and metabolome, mental well-being, body composition and cardiovascular fitness.

Trial Health

77
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
30

participants targeted

Target at below P25 for not_applicable

Timeline
45mo left

Started Oct 2023

Longer than P75 for not_applicable

Geographic Reach
1 country

1 active site

Status
recruiting

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Progress41%
Oct 2023Jan 2030

First Submitted

Initial submission to the registry

December 23, 2022

Completed
19 days until next milestone

First Posted

Study publicly available on registry

January 11, 2023

Completed
9 months until next milestone

Study Start

First participant enrolled

October 16, 2023

Completed
6.2 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

January 2, 2030

Expected
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

January 2, 2030

Last Updated

May 6, 2026

Status Verified

April 1, 2026

Enrollment Period

6.2 years

First QC Date

December 23, 2022

Last Update Submit

April 30, 2026

Conditions

Outcome Measures

Primary Outcomes (1)

  • Change of IBS Symptom severity

    this will be assessed after patients have done a cardiovascular endurance training

    from baseline to 12 weeks

Secondary Outcomes (1)

  • Change of IBS Symptom severity

    from baseline to 6 weeks

Study Arms (1)

Intervention arm

EXPERIMENTAL

IBS subjects fulfilling the eligibility criteria will follow a structured and personalised cardiovascular endurance training (CET).

Other: Cardiovascular endurance training

Interventions

Based on the results of a maximal effort test, investigators will provide a personalised training program. Results of a submaximal effort test after 6 weeks, will allow for adaptation of the training program for the remaining training period.

Intervention arm

Eligibility Criteria

Age18 Years - 60 Years
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64)

You may qualify if:

  • Patients aged 18 - 60 years;
  • Fulfilling the ROME IV criteria for Irritable bowel syndrome (IBS);
  • Moderate symptom severity as defined by a IBS-Symptom Severity Scale \> 175;
  • Sedentary lifestyle defined as SIT-Q-7D \> 8h/day;
  • Physically inactive defined as \< 150min/week on the IPAQ score

You may not qualify if:

  • Cardiorespiratory disorder hampering participation in a program of physical exercise as evidenced by the sport + keuringsartsen (SKA) questionnaire.
  • Clinical suspicion of an organic disorder different from IBS (patients can be included when this disorder had been excluded);
  • Known inflammatory bowel disorder;
  • Known intestinal motility disorder;
  • Alcohol (defined as more than 14 U per week) or other substance abuse;
  • Active psychiatric disorder;
  • Known systemic or auto-immune disorder with implication for the GI system;
  • Prior abdominal surgery (with the exception of appendectomy or cholecystectomy more than 6 months ago);
  • Any prior diagnosis of cancer other than basocellular carcinoma;
  • Current chemotherapy;
  • History of gastro-enteritis in the past 8 weeks;
  • Change in diet in the past 8 weeks;
  • Dietary supplements unless taken at a stable dose for more than 8 weeks;
  • Antibiotics, pre-, pro-, post-biotics or any combination during the past 8 weeks;
  • Treatment with neuromodulators (one neuromodulator taken at a stable dose for more than 12 weeks is allowed);
  • +1 more criteria

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

UZ Brussel

Jette, 1090, Belgium

RECRUITING

MeSH Terms

Conditions

Irritable Bowel Syndrome

Condition Hierarchy (Ancestors)

Colonic Diseases, FunctionalColonic DiseasesIntestinal DiseasesGastrointestinal DiseasesDigestive System Diseases

Central Study Contacts

Study Design

Study Type
interventional
Phase
not applicable
Allocation
NA
Masking
NONE
Purpose
TREATMENT
Intervention Model
SINGLE GROUP
Model Details: IBS subjects fulfilling the eligibility criteria will follow a structured and personalised cardiovascular endurance training (CET).
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

December 23, 2022

First Posted

January 11, 2023

Study Start

October 16, 2023

Primary Completion (Estimated)

January 2, 2030

Study Completion (Estimated)

January 2, 2030

Last Updated

May 6, 2026

Record last verified: 2026-04

Locations