MedDiet in Kidney Transplant Recipients (MedDiet_KT)
6-Week Mediterranean Diet Intervention on Dietary Adherence, Body Composition, and Physical Function in Kidney Transplant Recipients: A Pilot Randomized Controlled Trial
In recent years, increasing attention has been directed toward the role of diet and lifestyle factors in influencing graft function and patient survival after kidney transplantation (KT). Among the dietary patterns investigated, the Mediterranean diet (MedDiet) is among most studied diets in KT recipients. Data from observational studies show that greater adherence to the MedDiet is beneficial in kidney transplant recipients and is associated with improved lipid profile, lower oxidative stress, less frequent new-onset diabetes mellitus after transplantation, metabolic syndrome, better kidney function, and mortality. Unfortunately, adherence to MedDiet in kidney transplant recipients is low, and ranges between 25 % and 44.7%. Data from a Dutch cross-sectional study showed that higher levels of food literacy are associated with better adherence to MedDiet. Nevertheless, evidence from randomized dietary interventions aimed at improving MedDiet adherence in this population remains limited. Therefore, the aim of our pilot randomized controlled trial was to evaluate whether a six-week MedDiet intervention could improve adherence to the Mediterranean dietary pattern, assessed using the Mediterranean Diet Adherence Screener (MEDAS), and to explore the effects of MedDiet on body composition and physical function. We conducted an interventional, randomized study at the Kidney Transplantation Centre, Department of Nephrology, University Medical Centre Ljubljana. The intervention duration was six weeks and was performed by a Master's student in nutrition. We included kidney transplant recipients undergoing regular follow-up at the Kidney Transplantation Centre. Patients were invited to participate verbally via telephone contact one week prior to their scheduled physician appointment. Participation was voluntary and confirmed by a signed informed consent. The following exclusion criteria were applied: body mass index (BMI) > 25 kg/m², age > 45 years, female sex, serum creatinine > 250 µmol/L, a MEDAS score ≥ 10 points, and systolic blood pressure > 160 mmHg. Patients were randomized to the intervention and control group.
The primary study outcome was the MEDAS score. Secondary outcomes were lean tissue index (LTI; kg/m²), fat tissue index (FTI; kg/m²), handgrip strength (kg), and chair-stand performance (number of repetitions).
Studieoversigt
Status
Status
Betingelser
Betingelser
Intervention / Behandling
Intervention / Behandling
Undersøgelsestype
Undersøgelsestype
Tilmelding (Faktiske)
Tilmelding
Fase
Fase
- Ikke anvendelig
Kontakter og lokationer
Studiesteder
-
-
-
Ljubljana, Slovenien, 1000
- UMC Ljubljana
-
-
Deltagelseskriterier
Berettigelseskriterier
Berettigelseskriterier
Aldre berettiget til at studere
- Voksen
Tager imod sunde frivillige
Beskrivelse
Inclusion Criteria:
- 18 years old
- male
- kidney transplant recipient
Exclusion Criteria:
- body mass index (BMI) > 25 kg/m²
- age > 45 years
- female sex
- serum creatinine > 250 µmol/L,
- a MEDAS score ≥ 10 points, and systolic blood pressure > 160 mmHg
Studieplan
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
- Primært formål: Støttende pleje
- Tildeling: Randomiseret
- Interventionel model: Parallel tildeling
- Maskning: Ingen (Åben etiket)
Antal våben
Våben og indgreb
Deltagergruppe / ArmDeltagergruppe / Arm |
Intervention / BehandlingIntervention / Behandling |
|---|---|
|
Eksperimentel: Intervention (MedDiet) group
Med Diet group
|
intervention with Mediterranean Diet
|
|
Ingen indgriben: Control arm
No specific dietary intervention
|
Hvad måler undersøgelsen?
Primære resultatmål
Primære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
|
Mediterranean Diet Adherence Screener (MEDAS)
Tidsramme: 6 weeks
|
adherence to the Mediterranean Diet was measured using the MEDAS before and after the 6 week intervention
|
6 weeks
|
Sekundære resultatmål
Sekundære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
|
lean tissue index (LTI; kg/m²)
Tidsramme: 6 weeks
|
6 weeks
|
|
|
fat tissue index (FTI; kg/m²)
Tidsramme: 6 weeks
|
6 weeks
|
|
|
handgrip strength (kg)
Tidsramme: 6 weeks
|
6 weeks
|
|
|
chair-stand test
Tidsramme: 6 weeks
|
30-second chair-stand performance (number of repetitions)
|
6 weeks
|
Samarbejdspartnere og efterforskere
Sponsor
Sponsor
Publikationer og nyttige links
Generelle publikationer
- Ying T, Shi B, Kelly PJ, Pilmore H, Clayton PA, Chadban SJ. Death after Kidney Transplantation: An Analysis by Era and Time Post-Transplant. J Am Soc Nephrol. 2020 Dec;31(12):2887-2899. doi: 10.1681/ASN.2020050566. Epub 2020 Sep 9.
- Billany RE, Bishop NC, Castle EM, Graham-Brown MPM, Greenwood SA, Lightfoot CJ, Wilkinson TJ. Physical activity interventions in adult kidney transplant recipients: an updated systematic review and meta-analysis of randomized controlled trials. Ren Fail. 2025 Dec;47(1):2480246. doi: 10.1080/0886022X.2025.2480246. Epub 2025 Mar 27.
- Tonelli M, Wiebe N, Knoll G, Bello A, Browne S, Jadhav D, Klarenbach S, Gill J. Systematic review: kidney transplantation compared with dialysis in clinically relevant outcomes. Am J Transplant. 2011 Oct;11(10):2093-109. doi: 10.1111/j.1600-6143.2011.03686.x. Epub 2011 Aug 30.
Hjælpsomme links
Datoer for undersøgelser
Studer store datoer
Studiestart (Faktiske)
Studiestart
Primær færdiggørelse (Faktiske)
Primær færdiggørelse
Studieafslutning (Faktiske)
Studieafslutning
Datoer for studieregistrering
Først indsendt
Først indsendt
Først indsendt, der opfyldte QC-kriterier
Først indsendt, der opfyldte QC-kriterier
Først opslået (Faktiske)
Først opslået
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Faktiske)
Sidste opdatering sendt
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidst verificeret
Sidst verificeret
Mere information
Begreber relateret til denne undersøgelse
Nøgleord
Yderligere relevante MeSH-vilkår
Andre undersøgelses-id-numre
Andre undersøgelses-id-numre
- 0120-375/2023/3
Plan for individuelle deltagerdata (IPD)
Planlægger du at dele individuelle deltagerdata (IPD)?
Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter
Studerer et amerikansk FDA-reguleret lægemiddelprodukt
Studerer et amerikansk FDA-reguleret enhedsprodukt
Disse oplysninger blev hentet direkte fra webstedet clinicaltrials.gov uden ændringer. Hvis du har nogen anmodninger om at ændre, fjerne eller opdatere dine undersøgelsesoplysninger, bedes du kontakte register@clinicaltrials.gov. Så snart en ændring er implementeret på clinicaltrials.gov, vil denne også blive opdateret automatisk på vores hjemmeside .