Effect of a Fermented Dairy Protein With Prebiotic Fiber on GI Complaints (NCT06946017) | Clinical Trial Compass
RecruitingNot Applicable
Effect of a Fermented Dairy Protein With Prebiotic Fiber on GI Complaints
United States114 participantsStarted 2025-03-31
Plain-language summary
A positive impact of a fermented dairy protein with prebiotic fiber supplement on self-reported GI complaints and wellbeing has been suggested (Wardenaar et al. 2024). The following project aims to further investigate the impact of this supplements in athletes with and without GI complaints in two separate data collections.
Part I of the data collection aims to investigate the impact of this supplement vs. a placebo on carbohydrate malabsorption (as a potential cause for GI distress) in athletes that normally don't identify as having GI complaints (randomized double-blind cross over study design covering a total of 9 weeks, including a 3-week washout period).
Part II of the data collection aims to confirm the earlier found results in the previous study (Wardenaar et al. 2024) in a group athletes self-reporting GI complaints that will be randomized into an intervention group or a placebo group (randomized double-blind parallel study design covering a total of 3 weeks).
Who can participate
Age range
18 Years – 50 Years
Sex
ALL
See this in plain English?
AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
Aside from having participants fitting the inclusion and exclusion criteria below, potential participants will be screened using the gastrointestinal symptom rating scale (GSRS). Based on the outcome they will be assigned to the Part I (i.e. no self-reported GI tract issues (GSRS questionnaire score GI complaints, based on GSRS screening with all items scored \<4 (severe) and a total GSRS score ≤25), or Part II (i.e. Severe self-reported GI tract issues (GSRS questionnaire score GI complaints, based on GSRS screening with at least one item scored ≥4 (severe) and a total GSRS score ≥30). If they don't fit these criteria (i.e., having a GSRS score ranging from 26-29) they will be excluded from participation.
Inclusion Criteria:
* Healthy subjects living in the Phoenix area in AZ, USA during the study
* Women/Men aged between 18-50 years (50-50%)
* Recreational competitive and non-competitive athletes (exercise at least 2x per week with a minimal total duration of 2 hours/week)
* BMI value between ≥18.5 and ≤ 30 kg/m2
* No physical limitations due to an injury (i.e., able to perform all activities associated with daily living and exercise in an independent manner).
* Willing to slightly increase their energy intake via a supplement during the study period on daily basis in the morning before breakfast.
* Willing and comfortable to perform multiple physical (stress) tests on a treadmill during the study.
* Participants without any contraindications when scoring the Physical Act…
Questions worth asking your doctor
Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.
1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?
Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.
Questions for the trial coordinator
The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.
1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?
A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.
What they're measuring
1
Part I: Hydrogen in breath
Timeframe: For 240 minutes post exercise after consuming a bolus of lactose.
2
Part II: Gastrointestinal Symptoms Rating Scores
Timeframe: For 240 minutes post exercise after consuming a bolus of lactose.