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Energy Expenditure12OATSNCT06951386

The Impact of Daily Intake of Short-chain Fatty Acids on Cardiometabolic Risk Factors in Individuals at Risk for Metabolic Syndrome

A study testing with short-chain fatty acids enriched drink and unenriched oat drink in people with Energy Expenditure and Metabolic Syndrome, run by KU Leuven at 1 site in Belgium.

Recruiting

Looking for participants now. Contact the study team or a site below to ask about taking part.

Sites and contacts
Official record
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Trial summary

During this study, the effect of short-chain fatty acids on blood lipaedemia, glycemia, anthropometrics, blood pressure and energy expenditure will be investigated. Read more about this study

Who is it for?
Ages 18 to 65 years
What is being tested?
with short-chain fatty acids enriched drink and unenriched oat drink
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
50 participants
Where
1 siteBelgium
Study dates
11 Feb 2025to 28 Feb 2026
Phase
Interventional
Are there results?
Not yet: the study is under way

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 to 65 years
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • male and female participants
  • central obesity ( BMI ≥ 25 kg/m² or waist circumference ≥ 80 cm for women/ ≥ 94 cm for men)
  • One additional risk factor for metabolic syndrome:
  • Insulin resistance (HOMA-IR ≥ 1.7 or fasting glucose ≥ 100 mg/dl)
  • Triglyceride concentration ≥ 150 mg/dl
  • HDL-cholesterol < 40 mg/dl for women/ < 50 mg/dl for men
  • Systolic blood pressure ≥ 130 mmHg or diastolic blood pressure ≥ 85 mmHg
  • knowledge of English

Who cannot join

  • gastrointestinal disorders such as IBD, IBS, celiac disease, chronic constipation, chronic diarrhoea
  • history of abdominal surgery, except for appendectomy
  • Use of antihypertensive, cholesterol lowering, glucose-regulating drugs and corticosteroids
  • Use of antibiotics 3 months prior to the start or during the study
  • Use of probiotics and prebiotics 2 weeks prior to the start of the study/ during the study
  • Being on weight loss, gluten-free, lactose-free or vegan diet
Show all 10Show fewer
  • Pregnancy, lactation or wish to become pregnant
  • Previous or current substance/ alcohol dependence or abuse
  • Hyper- or hypothyroidism
  • Allergy or intolerance to oat milk

Trial locations and contacts

1 site in 1 country. Contact the study team or a site near you to ask about taking part.

Riet Rosseel, Msc contact

+3216373428

riet.rosseel@kuleuven.be

Kristin Verbeke, Prof. contact

kristin.verbeke@kuleuven.be

Belgium1 site, 1 recruiting
  • KU Leuven/ UZ Leuven

    Leuven, Vlaams-Brabant, 3000

    Riet Rosseel, Msc, +3216373428, riet.rosseel@kuleuven.be

    Kristin Verbeke, Prof., kristin.verbeke@kuleuven.be

    Recruiting

Other trials in Belgium

About this study

Official title: The Impact of 12 Weeks Intervention With Plant-based Oat Drink Rich in Short-chain Fatty Acids on Postprandial Lipidemia in Individuals at Risk for Metabolic Syndrome

During this study, the effect of short-chain fatty acids on blood lipaedemia, glycemia, anthropometrics, blood pressure and energy expenditure will be investigated.

Read the detailed description

The goal of this study is to investigate the impact of consuming every day a drink enriched with short-chain fatty acids for 12 weeks on the cardiometabolic health in individuals at risk of metabolic syndrome. This means the investigators are looking for people with overweight and disrupted cholesterol, high blood pressure or elevated blood glucose. The individuals will consume for 12 weeks a drink either enriched with SCFA or a control drink (randomly allocated). Before and after this period (study visit 1 and 4), a study visit will take place in which metabolic parameters will be measured such as blood pressure, body weight, waist- and hip circumference, body composition, energy expenditure, glucose, insulin and blood lipids. After 4 and 8 weeks, anthropometrics, blood pressure and body composition will be measured during a short study visit (study visit 2 and 3).

Being tested
with short-chain fatty acids enriched drink, unenriched oat drink
Keywords
short-chain fatty acids, cardiometabolic health
Medical subject headings
Metabolic Syndrome, Hyperlipidemias

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • with short-chain fatty acids enriched drinkDietary supplement

    Oat-based drink enriched with 15 g/L short-chain fatty acids

  • unenriched oat drinkDietary supplement

    Oat-based drink

Study groups in NCT06951386
Study groupRoleWhat they receive
Drink enriched with short-chain fatty acidsActive comparatorTreatment with enriched drink
Receives: Dietary Supplement: with short-chain fatty acids enriched drink
Control drinkPlacebo comparatorTreatment with control drink
Receives: Dietary Supplement: unenriched oat drink

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Fasting triglycerides

    Triglyceride concentrations will be measured in fasting state

    Measured: During study visit 1(baseline) and visit 4 (end of intervention, week 12)

Secondary outcomes (40)
  1. Fasting glycemia

    In fasting state glucose will be measured

    Measured: During study visit 1 (baseline) and 4 (12 weeks)

  2. Fasting energy expenditure

    Energy expenditure will be measured for 30 minutes in fasting state using indirect calorimetry

    Measured: During study visit 1 (baseline) and 4 (12 weeks)

  3. Anthropometrics: body weight

    Body weight will be measured at the start of the visit

    Measured: Baseline, week 4, week 8 and week 12

  4. Blood pressure

    Systolic and diastolic blood pressure will be measured at the start of the visit

    Measured: Baseline, week 4, week 8 and week 12

  5. Insulin resistance: HOMA-IR

    HOMA-IR will be determined using fasting and postprandial (after 30 min) glucose and insulin levels.

    Measured: During study visit 1 (baseline) and 4 (12 weeks)

  6. HbA1c

    Glycosylated hemoglobin HbA1c will be measured in fasting state

    Measured: During study visit 1 (baseline) and 4 (12 weeks)

  7. Short-chain fatty acids in stool

    Short-chain fatty acids in stool will be measured before and after the intervention

    Measured: Within 2 days prior to study visit 1 (baseline) and 4 (12 weeks)

  8. Incretin hormone GLP1

    GLP-1 will be measured in fasting and postprandial state (30, 60, 90, 120, 150,180, 240, 300, 360 min)

    Measured: During study visit 1 (baseline) and 4 (12 weeks) (up to 6 hours)

  9. Cytokines

    Cytokines such as IL-1β, IL-6, IL-10, TNF-alpha, IL-13 and interferon (IFN)-γ will be measured in fasting state (unit: pg/ml)

    Measured: During study visit 1 (baseline) and 4 (12 weeks)

  10. 24 hour diet recall

    Subjects will complete an online 24 hour diet recall

    Measured: Before the intervention and during week 4, 8 and 12 of the intervention

  11. Postprandial glycemia

    Glucose concentrations will be measured 30,60,90,120,150,180,240,300 and 360 min after a mixed meal tolerance test

    Measured: During study visit 1 (baseline) and 4 (12 weeks) (up to 6 hours)

  12. Postprandial lipaedemia: triglycerides

    Triglycerides will be measured after a mixed meal tolerance test (30, 60, 90, 120, 150, 180, 240, 300, 360 min)

    Measured: During study visit 1 (baseline) and 4 (12 weeks) (up to 6 hours)

  13. Short-chain fatty acids in blood

    Short-chain fatty acids (acetate, propionate and butyrate) concentrations will be measured in fasting and postprandial state (30, 60, 90, 120, 180, 240, 300, 360 min).

    Measured: During study visit 1 (baseline) and 4 (12 weeks) (up to 6 hours)

  14. Appetite measurements

    Appetite in response to mixed meal tolerance test, will be measured using 100 millimeter (mm) Visual Analogue Scale (indicating score on line of 100 mm, 0 mm: don't agree, 100 mm: totally agree) in fasting (i.e. 0 minute) and postprandial state (30, 60, 90, 120,150, 180, 240, 300 and 360 min).

    Measured: During study visit 1 (baseline) and 4 (12 weeks) (up to 6 hours)

  15. Physical activity measurement

    Individuals complete the short form of the international physical activity questionnaire (IPAQ) before and after the intervention. In the IPAQ participants fill in the number of days/ week they spent doing vigorous, moderate activity and walking and how long (hours and minutes) per day they do this. It also includes a question about how long they sit on a day.

    Measured: At the end of study visit 1 (baseline) and 4 (12 weeks)

  16. Postprandial energy expenditure

    Energy expenditure will be measured for 3 hours after the mixed meal tolerance test

    Measured: During study visit 1 (baseline) and 4 (12 weeks) (up to 3 hours)

  17. Fasting blood lipids

    Total, HDL-, LDL-cholesterol (mg/dl) will be measured in fasting state

    Measured: During study visit 1 (baseline) and 4 (12 weeks)

  18. Metabolomics

    Untargeted metabolomics analysis will be performed on fasting blood sample

    Measured: During study visit 1 (baseline) and 4 (12 weeks)

  19. Fasting insulinemic response

    In fasting state the insulin concentration will be measured

    Measured: During study visit 1 (baseline) and 4 (12 weeks)

  20. Anthropometrics: waist and hip circumference

    Waist- and hip circumference will be measured at the start of the visit

    Measured: Baseline, week 4, week 8 and week 12

  21. Gut hormone: PYY

    PYY will be measured in postprandial state at 30, 60, 90, 120, 180, 240, 300 and 360 min

    Measured: During study visit 1 (baseline) and 4 (12 weeks) (up to 6 hours)

  22. LBP

    LBP will be measured in fasting state

    Measured: During study visit 1 (baseline) and 4 (12 weeks)

  23. HOMA-B

    HOMA-B will be measured in fasting state

    Measured: During study visit 1 (baseline) and 4 (12 weeks)

  24. Insulinogenic index

    IGI will be measured in fasting state. IGI is ratio of (postprandial insulin (30 min) -fasting insulin (mU/L)) over (postprandial glucose (30 min) - fasting glucose (mmol/L))

    Measured: During study visit 1 (baseline) and 4 (12 weeks)

  25. Postprandial insulin

    Insulin concentrations will be measured 30,60,90,120,150,180,240,300 and 360 min after a mixed meal tolerance test

    Measured: During study visit 1 (baseline) and 4 (12 weeks) (up to 6 hours)

  26. Postprandial lipaedemia: total, LDL and HDL cholesterol

    Total, HDL and LDL cholesterol will be measured after 30,60,90,120,150,180,240,300 and 360 min (mg/dl)

    Measured: During study 1 (baseline) and study 4 (12 weeks) (up to 6 hours)

  27. Postprandial lipaedemia: free fatty acids

    Free fatty acids will be measured at 30,60,90,120,150,180,240,300 and 360 min (µmol/l)

    Measured: During study 1 (baseline) and study 4 (12 weeks) (up to 6 hours)

  28. % fat mass

    % fat mass is measured using a bodystat bioelectrical impedance device, expressed in %

    Measured: During all 4 study visits (0, 4,8 and 12 weeks) (fasted state)

  29. kg fat mass

    kg fat mass is measured using a bodystat bioelectrical impedance device, expressed in kg

    Measured: During all 4 study visits (0, 4,8 and 12 weeks) (fasted state)

  30. fat free mass (kg)

    Fat free mass is measured using a bodystat bioelectrical impedance device, expressed in kg

    Measured: During all 4 study visits (0, 4,8 and 12 weeks) (fasted state)

  31. Dry lean weight (kg)

    Dry lean weight is measured using a bodystat bioelectrical impedance device, expressed in kg

    Measured: During all 4 study visits (0, 4,8 and 12 weeks) (fasted state)

  32. Water percentage

    % water in body is measured using a bodystat bioelectrical impedance device, expressed in %

    Measured: During all 4 study visits (0, 4,8 and 12 weeks) (fasted state)

  33. Total body water (L)

    Volume of body water is measured using a bodystat bioelectrical impedance device, expressed in liters

    Measured: During all 4 study visits (0, 4,8 and 12 weeks) (fasted state)

  34. Average energy requirements

    Average energy requirements is measured using a bodystat bioelectrical impedance device, expressed in kcal/day

    Measured: During all 4 study visits (0, 4,8 and 12 weeks) (fasted state)

  35. Basal metabolic rate

    Basal metabolic rate (BMR) is measured using a bodystat bioelectrical impedance device, expressed in kcal/day

    Measured: During all 4 study visits (0, 4,8 and 12 weeks) (fasted state)

  36. basal metabolic rate (BMR)/ body weight

    BMR/body weight is measured using a bodystat bioelectrical impedance device, expressed in kcal/kg

    Measured: During all 4 study visits (0, 4,8 and 12 weeks) (fasted state)

  37. BMI

    BMI is measured using a bodystat bioelectrical impedance device, expressed in kg/m²

    Measured: During all 4 study visits (0, 4,8 and 12 weeks) (fasted state)

  38. Waist to hip ratio

    Waist to hip ratio is measured using a bodystat bioelectrical impedance device

    Measured: During all 4 study visits (0, 4,8 and 12 weeks) (fasted state)

  39. Resistance during bioelectrical impedance

    Resistance is measured using a bodystat bioelectrical impedance device, expressed in Ohm

    Measured: During all 4 study visits (0, 4,8 and 12 weeks) (fasted state)

  40. Free fatty acids in fasting state

    Free fatty acids will be measured in fasted state (µmol/l)

    Measured: During study visit 1 (baseline) and 4 (after 12 weeks)

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted30 Apr 2025
  2. Study start11 Feb 2025
  3. Primary completion28 Feb 2026 (estimated)
  4. Study completion28 Feb 2026 (estimated)

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase N/A
Primary purpose
Basic science
Allocation
Randomised
Intervention model
Parallel groups
Masking
Triple blind
Who is masked
Participant, Investigator, Outcomes assessor
Enrolment
50 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT06951386
Sponsor's protocol ID
S69712
Acronym
12OATS
Status last verified
Jan 2025
First submitted
29 Jan 2025
Last updated
4 May 2025
Results posted
No
Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
No: No IPD data will be shared with other researchers.

Questions about this trial

What is this clinical trial studying?

A study testing with short-chain fatty acids enriched drink and unenriched oat drink in people with Energy Expenditure and Metabolic Syndrome, run by KU Leuven at 1 site in Belgium.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 8 inclusion and 10 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: looking for participants now, as of the sponsor's last update on 4 May 2025. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in Belgium. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

This study is still under way. Results are not available in the source record yet.

How can a doctor refer a patient or contact the research team?

Contact Riet Rosseel, Msc (+3216373428, riet.rosseel@kuleuven.be), or a site near the patient. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Fasting triglycerides (time frame: During study visit 1(baseline) and visit 4 (end of intervention, week 12)). It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 4 May 2025.

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