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Effects of Barley and Kefir on Gut Microbiota in Physically Active Adults

RecruitingNAAges 18 Years - 55 YearsAllWestern Norway University of Applied Sciences
NCT07864779 on ClinicalTrials.gov ↗
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In plain words

What the trial is, and whether it could suit you

The purpose of this randomized controlled clinical trial is to investigate whether a four-week dietary intervention consisting of a daily meal with barley and kefir can influence gut microbiota diversity and composition in physically active adults participating in endurance sports. The study will further examine whether diet-induced changes in the gut microbiota are associated with changes in relevant circulating and urinary metabolites. Growing evidence indicates that the gut microbiota plays an important role in metabolism, immune function, and overall health. Dietary factors are among the most important modulators of gut microbial composition. Barley contains dietary fibre including beta-glucans and other prebiotic components that may promote the growth of beneficial bacteria, while kefir contains live probiotic lactic acid bacteria that may influence both microbial composition and f

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📋 Eligibility rules (as published)
Inclusion Criteria: * Adults aged 18 - 55 years * High aerobic capacity defined by the following minimum estimated VO₂max values: Men: * 20-29 years: ≥ 51 mL/kg/min * 30-39 years: ≥ 47 mL/kg/min * 40-49 years: ≥ 43 mL/kg/min * 50-55 years: ≥ 38 mL/kg/min Women: * 20-29 years: ≥ 44 mL/kg/min * 30-39 years: ≥ 40 mL/kg/min * 40-49 years: ≥ 36 mL/kg/min * 50-55 years: ≥ 32 mL/kg/min Exclusion Criteria: * Pregnancy * Ulcerative colitis * Crohn's disease * Coeliac disease * Milk allergy * Lactose intolerance * Use of antibiotics within the previous 6 months
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What it tests

  • Barley
  • Kefir
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Where

1 site
Western Norway University of Applied Sciences
Bergen, Norway
🤝 Taking part is your choice, and you can leave at any time. Only the trial team can confirm you are eligible — always decide together with your own doctor.
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