Clinical Research Directory

Inclusion Criteria: 1. Voluntary written informed consent of the participant or their legally authorized representative has been obtained prior to any screening procedures 2. Males and females 18-70 years old. 3. Patients with a diagnosis of ulcerative colitis (UC), Crohn's disease (CD), inflammatory bowel disease type unclassified (IBDU) based on radiology, endoscopy and/or histology 4. Patients with a disease duration of more than one year 5. Patients with a score of \<30 on the FACIT Fatigue scale 6. Patients possessing a smartphone 7. Patients with an availability to commit to daily behavioural changes 8. Patients being fluent in Dutch. Exclusion Criteria: 1. Patients that initiated new IBD medication (steroids, mesalamine, thiopurines, methotrexate, biologicals or small molecules) in the past three months prior to screening 2. Patients with objective signs of active disease (CRP\<10mg/L or faecal calprotectin \<250µg/g) at screening 3. Participation in an interventional Study with an investigational medicinal product (IMP) or device at screening 4. Patients with planned surgery at screening 5. Patients with an iron (\<65 µg/dL), vitamin D (\<11 µg/L), vitamin B12 (\<197 ng/L) or folic acid (\<3.9 µg/L) deficiency or malnutrition (weight loss \>10-15% within six months, BMI \<18.5 kg/m², NRS \>5 or serum albumin \<30 g/L) at screening 6. Patients with thyroid dysfunction or hypophosphatemia at screening 7. Patients with physical injury (according to researcher's interpretation) at screening 8. Patients with self-reported sleep disturbance or periods of apnoea at screening 9. Patients with BMI \>30 kg/m² at screening 10. Patients with present or past diagnosis of severe psychiatric disease diagnosis (ongoing major depression, schizophrenia, bipolar disease, ongoing substance abuse) at screening 11. Patients that initiated new psychotropic medication or had a changed dosage of psychotropic medication in the past three months prior to screening