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Variasjon i blandede måltidstester: Fast versus justert til energibehov Kalorisk dose

18. september 2026 oppdatert av: National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)

Background:

Researchers use mixed meal tolerance tests (MMTTs) to look at how people s bodies respond to eating a meal. However, researchers do not agree on how to decide the number of calories to give in each meal. Some use fixed meals, which are the same size for everyone, and some use adjusted meals, based on the size of the person s body. Researchers want to know which MMTT is best to use for future research.

Objective:

To learn how fixed vs adjusted meals affect blood glucose levels in healthy people.

Eligibility:

Healthy people aged 18 years or older.

Design:

Participants will have 3 or 4 clinic visits of up to 8 hours in 8 weeks.

Participants will have baseline tests:

Their height, weight, and waist size will be measured.

They will have an oral glucose tolerance test: A needle attached to a tube (IV) will be inserted into a vein in the arm. They will have a sugary drink. Blood samples will be taken from the tube at intervals up to 3 hours after the drink.

They will have a body scan.

Participants will have 2 MMTT visits. One will include a fixed meal and one will include an adjusted meal. They will have tests at both visits:

Resting metabolic rate: A clear hood will be placed over the participant s head while they rest for 20 minutes. This will measure the oxygen they breathe in and out.

MMTT. Participants will have 5 minutes to drink a liquid meal. Blood samples will be taken at intervals for the next 4 hours....

Studieoversikt

Status

Rekruttering

Forhold

Intervensjon / Behandling

Detaljert beskrivelse

Study Description:

This study will be an outpatient study completed in 3-4 separate visits. We will compare two methods of dosing (fixed and adjusted) a mixed meal tolerance test (MMTT) to determine which results in greater physiological variability in hormone response. Ultimately, the goal is to determine which method of dosing is more appropriate in a research setting.

Objectives:

Primary Objective:

To determine whether an adjusted energy dose MMTT or a fixed dosed meal will result in greater variability in glucose area under the curve (AUC) within the same participants across a range of BMIs.

Secondary Objectives:

To determine whether baseline body composition, blood parameters (lipids, hormones, etc), and resting metabolic rate are associated with MMTT responses and whether this association is moderated by MMTT condition (fixed vs. adjusted).

Endpoints:

Primary Endpoint: Glucose area under the curve (AUC)

Secondary Endpoints: Area under the curve (AUC), incremental area under the curve (iAUC), value and timing of the absolute maximum (peak), value and timing of the inflection point after the absolute maximum value, value and timing of the maximum rate of incline, value and timing of the maximum rate of decline, total number of critical points with body composition, blood parameters, and resting metabolic rate as predictors.

Studietype

Intervensjonell

Registrering (Antatt)

79

Fase

  • Ikke aktuelt

Kontakter og plasseringer

Denne delen inneholder kontaktinformasjon for de som utfører studien, og informasjon om hvor denne studien blir utført.

Studiekontakt

Studiesteder

  • Forente stater
    • Arizona
      • Phoenix, Arizona, Forente stater, 85014
        • Rekruttering
        • NIDDK, Phoenix
        • Ta kontakt med:

Deltakelseskriterier

Forskere ser etter personer som passer til en bestemt beskrivelse, kalt kvalifikasjonskriterier. Noen eksempler på disse kriteriene er en persons generelle helsetilstand eller tidligere behandlinger.

Kvalifikasjonskriterier

Alder som er kvalifisert for studier

18 år til 99 år (Voksen, Eldre voksen)

Tar imot friske frivillige

Ja

Kjønn som er kvalifisert for studier

Alle

Beskrivelse

  • INCLUSION CRITERIA:

In order to be eligible to participate in this study, an individual must meet all of the following criteria:

  • Provision of signed and dated informed consent form.
  • Agreement to adhere to Lifestyle Considerations throughout study duration.
  • Males and females; Age >= 18years
  • Healthy, as determined by medical history, physical examination, and laboratory tests.

EXCLUSION CRITERIA:

An individual who meets any of the following criteria will be excluded from participation in this

study:

  • Current use of medications, dietary supplements, or alternative therapies known to alter energy metabolism.
  • Fasting plasma glucose >= 126 mg/dL
  • Type I or Type II Diabetes Mellitus by self-report.
  • Hematologic disorders including significant anemia (male hemoglobin < 13.0 g/dL or female hemoglobin < 11.0 g/dL)
  • Current pregnancy, pregnancy within the past 6 months or currently lactating
  • History or self-report of gastrointestinal disease, including inflammatory bowel diseases (e.g. Chron s disease and ulcerative colitis), malabsorption syndromes (e.g. celiac disease), gastric ulcer (active) which may alter metabolism or absorption of study food by self-report
  • Evidence of alcohol abuse as defined by an 8-point score on the Alcohol consumption screening AUDIT questionnaire in adults.
  • Participants who report taking large doses of acetaminophen (> 3 grams daily) who cannot stop acetaminophen 24 hours prior to and following the meal tests will be excluded from the study.
  • Inability to consume provided food based on a food allergy or intolerance.
  • Conditions not specifically mentioned above may serve as criteria for exclusion at the discretion of the investigators.
  • Any disorder, unwillingness, or inability not covered by any other exclusion criteria which, in the investigator s and/or team s opinion, jeopardizes the safety of the participant or others or would interfere with adherence to the protocol (such as claustrophobia).

Conditions not specifically mentioned above may serve as criteria for exclusion at the discretion of the investigators.

Studieplan

Denne delen gir detaljer om studieplanen, inkludert hvordan studien er utformet og hva studien måler.

Hvordan er studiet utformet?

Designdetaljer

  • Primært formål: Grunnvitenskap
  • Tildeling: Randomisert
  • Intervensjonsmodell: Crossover-oppdrag
  • Masking: Enkelt

Våpen og intervensjoner

Deltakergruppe / Arm
Intervensjon / Behandling
Aktiv komparator: 1

Fixed Mixed Meal Test
Annen: Fixed Mixed Meal Test

a FIXED dose meal that will be 900 kcal of a liquid meal
Aktiv komparator: 2

Adjusted Mixed Meal Test
Annen: Adjusted Mixed Meal Test

a body weight ADJUSTED dose liquid meal.

(30% of total daily energy requirements)

Hva måler studien?

Primære resultatmål

Resultatmål
Tiltaksbeskrivelse
Tidsramme
To determine whether an adjusted energy dose MMTTor a fixed dosed meal will result in greater variability in glucose area under the curve (AUC) within the same participants across a range of BMIs.
Tidsramme: Baseline, Visit 3/4

Glucose AUC associated with MMTT conditions (fixed vs. adjusted).
Baseline, Visit 3/4

Sekundære resultatmål

Resultatmål
Tiltaksbeskrivelse
Tidsramme
Body Composition
Tidsramme: Baseline, Visit 3/4

Change in energy expenditure associated with MMTT conditions (fixed vs. adjusted).
Baseline, Visit 3/4
Resting Metabolic Rate
Tidsramme: Baseline, Visit 3/4

Change in energy expenditure associated with MMTT conditions (fixed vs. adjusted).
Baseline, Visit 3/4
Lipids
Tidsramme: Baseline, Visit 3/4

Change in energy expenditure associated with MMTT conditions (fixed vs. adjusted).
Baseline, Visit 3/4

Samarbeidspartnere og etterforskere

Det er her du vil finne personer og organisasjoner som er involvert i denne studien.

Sponsor

National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)

Etterforskere

  • Hovedetterforsker: Susanne M Votruba, Ph.D., National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)

Publikasjoner og nyttige lenker

Den som er ansvarlig for å legge inn informasjon om studien leverer frivillig disse publikasjonene. Disse kan handle om alt relatert til studiet.

Hjelpsomme linker

Studierekorddatoer

Disse datoene sporer fremdriften for innsending av studieposter og sammendragsresultater til ClinicalTrials.gov. Studieposter og rapporterte resultater gjennomgås av National Library of Medicine (NLM) for å sikre at de oppfyller spesifikke kvalitetskontrollstandarder før de legges ut på det offentlige nettstedet.

Studer hoveddatoer

Studiestart (Faktiske)

23. august 2024

Primær fullføring (Antatt)

30. juni 2027

Studiet fullført (Antatt)

31. desember 2027

Datoer for studieregistrering

Først innsendt

24. januar 2024

Først innsendt som oppfylte QC-kriteriene

24. januar 2024

Først lagt ut (Faktiske)

25. januar 2024

Oppdateringer av studieposter

Sist oppdatering lagt ut (Faktiske)

21. september 2026

Siste oppdatering sendt inn som oppfylte QC-kriteriene

18. september 2026

Sist bekreftet

16. september 2026

Mer informasjon

Begreper knyttet til denne studien

Nøkkelord

Ytterligere relevante MeSH-vilkår

Andre studie-ID-numre

  • 10001707
  • 001707-DK

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