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Effekten af ​​forskellige diæter på arteriel stivhed hos overvægtige patienter på Liraglutid

3. november 2026 opdateret af: Marlene Chakhtoura, American University of Beirut Medical Center

Effekten af ​​middelhavsdiæt, lavkulhydrat-/højprotein- og fedtfattig kost på arteriel stivhed hos overvægtige patienter på Liraglutid: et randomiseret kontrolleret forsøg

In patients initiating Semaglutide for weight management, the objective is to compare the effect of the Mediterranean diet and the high protein/low carbohydrate (HP/LC) diet CV parameters, namely arterial stiffness, measured by carotid-femoral pulse wave velocity (cfPWV), and visceral adipose tissue, in addition to other metabolic indicators.

Studieoversigt

Status

Afsluttet

Betingelser

Intervention / Behandling

Detaljeret beskrivelse

This is a 6-month open label pilot RCT that will be conducted on Lebanese subjects with obesity, upon the initiation of Semaglutide for medical weight management, as recommended by their physician. Patients will be randomized to 2 treatment arms: Med diet and HP/LC diet. Med diet will be hypocaloric, allowing the same energy restriction, of 500 Kcal/d, while the HP/LC diet will be ad libitum. Participants will be recruited from the Endocrine clinics at AUB-MC, and from satellite clinic next in Beirut. Brochures and posters of the trial will be available in the clinic waiting areas. Patients of both participating and non-participating physicians will be recruited in the study.

Undersøgelsestype

Interventionel

Tilmelding (Faktiske)

31

Fase

  • Ikke anvendelig

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiesteder

    • Riad El Solh
      • Beirut, Riad El Solh, Libanon, 1107 2020
        • American University of Beirut - Medical Center

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

18 år til 49 år (Voksen)

Tager imod sunde frivillige

Ja

Køn, der er berettiget til at studere

Alle

Beskrivelse

Inclusion Criteria:

  • Men and premenopausal women, 18-49 years, with obesity defined as BMI ≥ 30 kg/m2
  • Upon the initiation of Semaglutide (within the first 1-4 weeks) for medical weight management, for clinical purposes, as advised by the primary physician
  • Able to commit for a 6-month trial visits

Exclusion Criteria:

  • Pregnant women
  • Patients who are taking or have taken other weight reducing drug therapies in the previous 6 months
  • Patients who have undergone metabolic weight loss surgery
  • Patients known to have diabetes (HbA1c ≥6.5% at screening)
  • Patients with uncontrolled hypertension
  • Patients with uncontrolled cardiac disease, pulmonary, renal or liver diseases, active cancer or psychiatric diseases
  • Patients with excessive alcohol intake, defined as ≥ 2 glasses per day
  • Patients known to have uncontrolled/ untreated thyroid disorders.
  • Patients with cushing disease or polycystic ovaries, and those with neuro-endocrine or drug induced obesity (such as anti-psychotic, steroids, hormonal therapy): Such patients are resistant to weight loss, and they need treatment of their primary disease and/or cessation of the culprit medication to lose weight
  • Patients with untreated gout
  • Patients who have undergone bariatric surgery

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Behandling
  • Tildeling: Randomiseret
  • Interventionel model: Parallel tildeling
  • Maskning: Ingen (Åben etiket)

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Eksperimentel: Mediterranean Diet

30 participants will be randomized to this arm. The intervention consists of 8 visits, over a period of 24 weeks, including 6 individual educational sessions on Mediterranean diet in patients on Semaglutide and 2 reinforcement educational sessions towards the end of the trial. Dietary assessments and adherence questionnaires will be conducted on several visits to assess adherence.

The diet will consist of a calorie-restricted Med diet, with 500 Kcal/d energy restriction. The intervention consists of individual and reinforcement sessions on Med diet. During these sessions, the RA will go over the benefits of Med diet, what composition it should have, and how to make appropriate choices for meal planning, in addition to providing food lists, by season. The individual sessions with subjects will also allow to individualize the diet plan.

Eksperimentel: High Protein/Low Carbohydrate Diet

30 participants will be randomized to this arm. The intervention consists of 8 visits, over a period of 24 weeks, including 6 individual educational sessions on High Protein/Low Carbohydrate diet in patients on Semaglutide and 2 reinforcement educational sessions towards the end of the trial. Dietary assessments and adherence questionnaires will be conducted on several visits to assess adherence.

This is a non-ketogenic diet consisting of ad libitum intake of proteins, fat, and vegetables, with restriction of daily carbohydrates to <130 g/d. The intervention consists of individual and reinforcement educational sessions on HP/LC, same as with Med diet (above). The individual sessions with subjects will also allow to individualize the diet plan.

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
cfPWV measurement and pulse wave analysis (PWA) using SphygmoCorCvMS V9 (AtCor Medical)
Tidsramme: 6 months after enrollment

Measured by an RA or a technician, based on the American Heart Association Council recommendations on arterial stiffness measurement in research. The distance from the suprasternal notch to the carotid pulse, and to the femoral site on the same side will be measured; the former distance is subtracted from the latter one. Ten seconds of carotid and 10 seconds of femoral arterial waveforms will be recorded, and the average of the data will be obtained for each of the sites.

6 months after enrollment

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Body composition - visceral adipose tissue using dual x-ray absorptiometry (DXA)
Tidsramme: 6 months after enrollment

Measured by an RA or a technician, assessed using dual x-ray absorptiometry (DXA), Hologic machine, version 13.6.0.5, the preferred method for the assessment of body composition. The ISCD recommendations will be followed for body composition measurement.

6 months after enrollment
Body composition - percent fat-free body mass using dual x-ray absorptiometry (DXA)
Tidsramme: 6 months after enrollment

Measured by an RA or a technician, assessed using dual x-ray absorptiometry (DXA), Hologic machine, version 13.6.0.5, the preferred method for the assessment of body composition. The ISCD recommendations will be followed for body composition measurement.

6 months after enrollment
Body composition - percent body fat using dual x-ray absorptiometry (DXA)
Tidsramme: 6 months after enrollment

Measured by an RA or a technician, assessed using dual x-ray absorptiometry (DXA), Hologic machine, version 13.6.0.5, the preferred method for the assessment of body composition. The ISCD recommendations will be followed for body composition measurement.

6 months after enrollment

Andre resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Dietary Assessment using 24-hour recalls
Tidsramme: 6 months after enrollment

Three-repeated 24-hour recalls (24 HR) administered via phone (2-week days and one week-end day, during one specific week). During the phone call, the participant will be asked to recall all what she/he has consumed during the past 24 hours, and the multiple pass approach of the USDA will be adopted.

6 months after enrollment
Dietary Assessment using adherence questionnaires
Tidsramme: 6 months after enrollment

During the individual sessions, brief adherence assessment questionnaires for each diet, adapted from PREDIMED protocol, will be administered to calculate dietary adherence scores.

6 months after enrollment
Anthropometric measurements - weight in kilograms, height in centimetres, aggregated into BMI (kilogram per meter squared).
Tidsramme: 6 months after enrollment

Weight and height will be measured following standard operating procedures (SOP) and BMI will be computed by dividing weight by height squared.

6 months after enrollment
Anthropometric measurements - waist and hip circumference in centimetres, aggregated into waist to hip ratio ratio
Tidsramme: 6 months after enrollment

Waist and hip circumference will be measured following standard operating procedures (SOP).

6 months after enrollment
Vital signs - blood pressure
Tidsramme: 6 months after enrollment

Blood pressure will be measured following standard operating procedures (SOP).

6 months after enrollment
Vital signs - heart rate
Tidsramme: 6 months after enrollment

Heart rate will be measured following standard operating procedures (SOP).

6 months after enrollment
Genetic studies
Tidsramme: 6 months after enrollment

Genetic studies will consist of Single Nucleoside Polymorphism (SNP) analysis of genes of the GLP1 receptors and cannabinoid receptor 1 will be performed in the molecular lab. These tests will be run at the endocrine core research Lab in batches at study completion.

6 months after enrollment
Metabolic, inflammatory and appetite hormones in pg/mL
Tidsramme: 6 months after enrollment

Gastric inhibitory polypeptide (GIP), Leptin, Adiponectin, Orexin, IL6. These tests will be run at the endocrine core research Lab in batches at study completion.

6 months after enrollment
Metabolic, inflammatory and appetite hormones in pmol/L
Tidsramme: 6 months after enrollment

Insulin and Ghrelin.These tests will be run at the endocrine core research Lab in batches at study completion.

6 months after enrollment
Metabolic, inflammatory and appetite hormones in ng/mL
Tidsramme: 6 months after enrollment

Irisin and mineral hormones and markers, including Crosslaps, Osteocalcin, GLP1. These tests will be run at the endocrine core research Lab in batches at study completion.

6 months after enrollment
Quality of Life Measurement as assessed by the SF-36 questionnaire
Tidsramme: 6 months after enrollment

SF-36 questionnaire filled by participant

6 months after enrollment

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

Efterforskere

  • Ledende efterforsker: Marlene Chakhtoura, MD, MSc, American University of Beirut Medical Center

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart (Faktiske)

1. juli 2021

Primær færdiggørelse (Faktiske)

15. december 2025

Studieafslutning (Faktiske)

15. december 2025

Datoer for studieregistrering

Først indsendt

2. juli 2021

Først indsendt, der opfyldte QC-kriterier

26. juli 2021

Først opslået (Faktiske)

4. august 2021

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

5. november 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

3. november 2026

Sidst verificeret

1. november 2026

Mere information

Begreber relateret til denne undersøgelse

Andre undersøgelses-id-numre

  • BIO-2020-0136

Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter

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