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Recruiting NCT05862636

NCT05862636 Who Fares Best With Mindfulness Meditation

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Clinical Trial Summary
NCT ID NCT05862636
Status Recruiting
Phase
Sponsor Prof. dr. Filip Raes
Condition Healthy
Study Type OBSERVATIONAL
Enrollment 120 participants
Start Date 2023-02-21
Primary Completion 2026-01

Eligibility & Interventions

Sex All sexes
Min Age 18 Years
Max Age N/A
Study Type OBSERVATIONAL
Interventions
Mindfulness Training

Eligibility Fast-Check

Enter your details for a quick preliminary check. This does not replace medical advice.

What to Expect as a Participant

This is an observational study. You will not receive an experimental treatment; researchers will collect data based on your existing condition or standard treatment.

This trial targets 120 participants in total. It began in 2023-02-21 with a primary completion date of 2026-01.

⚠ This information is for research awareness only. Always consult your physician before joining any clinical trial. Participation is voluntary and you may withdraw at any time.

Brief Summary

The overall aim of this observational study is to investigate how individual differences influence the effects of mindfulness meditation to uncover for whom mindfulness is beneficial and for whom it may be harmful. The first objective is to identify the mechanisms underlying the effects of mindfulness meditation on mental health. The second objective is to examine how three candidate factors, namely trauma symptoms, tendency to dissociate, and repetitive negative thinking, influence the effect of mindfulness meditation on mental health. Adults who enrolled for a Mindfulness-Based Intervention (MBI) at the participating sites (n=120 in total) will be invited to participate. Before the start of the MBI, after half of the sessions, at the end of the MBI and at 3-months follow-up, participants will complete self-report questionnaires. The main outcomes are symptoms of anxiety and depression, quality of life, wellbeing, and adverse effects resulting from the MBI. A subset of participants will be invited for a semi-structured interview after the end of the intervention. Update December 2024: Instead of analysing all subsamples recruited from the different sites separately, the investigators will now analyse all participants from all sites jointly. This amendment has two reasons. First, analysing all participants jointly allows to statistically compare the differences in effects across sites by including a variable that indicates from which site a participant was recruited. If the subsamples are analysed separately, the investigators can only compare the results at face-value but cannot determine whether the effects are statistically different across sites. Second, recruitment could not start at one site because of a restructuring of the mindfulness interventions there and the investigators are experiencing recruitment difficulties in a second site (recruited 5 participants within 1.5 years). Thus, it will not be feasible to recruit 120 participants per site. For those two reasons, the investigators decided to analyse all participants jointly and only recruit 120 participants in total for the quantitative part of this study (see updated study protocol).

Eligibility Criteria

Inclusion Criteria: * Enrolled in a mindfulness-based intervention at one of the participating sites Exclusion Criteria: * Insufficient knowledge of the Dutch or English language (depending on the study site) * No internet access

Contact & Investigator

Central Contact

Filip Raes, Prof. dr.

✉ filip.raes@kuleuven.be

📞 +3216325892

Principal Investigator

Filip Raes, Prof. dr.

PRINCIPAL INVESTIGATOR

KU Leuven

Frequently Asked Questions

Who can join the NCT05862636 clinical trial?

This trial is open to participants of all sexes, aged 18 Years or older, studying Healthy. Full inclusion and exclusion criteria are listed in the Eligibility Criteria section. Always confirm your eligibility with the research team before applying.

Is NCT05862636 currently recruiting?

Yes, NCT05862636 is actively recruiting participants. Contact the research team at filip.raes@kuleuven.be for enrollment information.

Where is the NCT05862636 trial being conducted?

This trial is being conducted at Antwerp, Belgium, Deinze, Belgium, Exeter, United Kingdom.

Who is sponsoring the NCT05862636 clinical trial?

NCT05862636 is sponsored by Prof. dr. Filip Raes. The principal investigator is Filip Raes, Prof. dr. at KU Leuven. The trial plans to enroll 120 participants.

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ClinicalMetric — Independent clinical trial intelligence platform. Not affiliated with NIH, ClinicalTrials.gov, the U.S. FDA, or any pharmaceutical company, hospital, or clinical research organization. Trial data is sourced from ClinicalTrials.gov for informational purposes only and does not constitute medical advice. Do not make any treatment, enrollment, or health decisions based solely on information found here — always consult a qualified healthcare professional. Full Disclaimer  ·  Last Reviewed: April 2026  ·  Data Methodology