- ICH GCP
- Registro degli studi clinici negli Stati Uniti
- Sperimentazione clinica NCT03741218
Grape Polyphenols and Second-meal Effect (GRAPESECOND)
Potential Modulatory Effect of Whole Grape on Second-meal Tolerance in Obese Subjects: Role of Polyphenols
Panoramica dello studio
Stato
Condizioni
Intervento / Trattamento
Descrizione dettagliata
Twenty-five subjects with obesity will be were recruited. Detailed inclusion and exclusion criteria are provided below.
The subjects will receive, after overnight fasting, either a monodose of freeze-dried grapes (equivalent to 300 g of fresh grapes) or isocaloric placebo solved in water, together with a high-fat breakfast. Blood samples will be collected before the intake, up to 5 h after breakfast, then a medium-fat lunch will be provided and blood samples will be collected for three additional hours. Both interventions will be separated by two weeks. The following determinations will be performed in blood samples collected at different periods: glucose, insulin, triglycerides, uric acid, viscosity, antioxidant capacity. Additionally, a satiety test will be provided. It is expected that grape supplementation, as compared with an isocaloric placebo, causes significant modifications in all the parameters indicated. Nevertheless, the primary outcome of this study is the area under the curve for glucose after the second meal (300-420 min from basal time).
Tipo di studio
Iscrizione (Effettivo)
Fase
- Non applicabile
Contatti e Sedi
Luoghi di studio
-
-
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Madrid, Spagna, 28040
- Institute of Food Science, Technology and Nutrition, National Research Council (ICTAN-CSIC)
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Criteri di partecipazione
Criteri di ammissibilità
Età idonea allo studio
Accetta volontari sani
Sessi ammissibili allo studio
Descrizione
Inclusion Criteria:
- Obesity (BMI = 30-40 kg/m2).
Exclusion Criteria:
- Subjects with a pharmaceutical treatment set to modify blood pressure, lipid profile or glucose.
- Subjects with diagnoses of type 2 diabetes, cardiovascular diseases or thyroid diseases.
- Values above the following ones: glucose, > 115 mg/dL; triglycerides, > 350 mg/dL; total cholesterol, > 280 mg/dL; systolic blood pressure, > 150 mmHg; diastolic blood pressure, > 100 mmHg
- Previous bariatric surgery.
- Volunteers participating in other studies (currently or during last year) or weight loss plans.
- Pregnant or breastfeeding women.
- Adherence to vegetarian diets or usual consumption of dietary supplements.
Piano di studio
Come è strutturato lo studio?
Dettagli di progettazione
- Scopo principale: Scienza basilare
- Assegnazione: Randomizzato
- Modello interventistico: Assegnazione incrociata
- Mascheramento: Doppio
Armi e interventi
Gruppo di partecipanti / Arm |
Intervento / Trattamento |
---|---|
Sperimentale: 1
All subjects will receive a high-fat breakfast and a medium-fat lunch twice.
They will consume together with the breakfast the placebo (PLA) the first time and grape (GRAP) the second time.
|
The subjects will receive, after overnight fasting, either a monodose of freeze-dried grapes (equivalent to 300 g of fresh grapes) or isocaloric placebo solved in water, together with a high-fat breakfast.
Blood samples will be collected before the intake, up to 5 h after breakfast, then a medium-fat lunch will be provided and blood samples will be collected for three additional hours.
A total of 10 samples will be collected: 0-30-60-120-180-240-300-330-360-420 min.
Both interventions will be separated by two weeks.
Subjects will be instructed not to modify their dietary habits during the development of the study, but during the 72 h before each visit they will have to restrict the intake of polyphenol-rich foods (a detailed list will be provided).
|
Sperimentale: 2
All subjects will receive a high-fat breakfast and a medium-fat lunch twice.
They will consume together with the breakfast grape (GRAP) the first time and the placebo (PLA) the second time.
|
The subjects will receive, after overnight fasting, either a monodose of freeze-dried grapes (equivalent to 300 g of fresh grapes) or isocaloric placebo solved in water, together with a high-fat breakfast.
Blood samples will be collected before the intake, up to 5 h after breakfast, then a medium-fat lunch will be provided and blood samples will be collected for three additional hours.
A total of 10 samples will be collected: 0-30-60-120-180-240-300-330-360-420 min.
Both interventions will be separated by two weeks.
Subjects will be instructed not to modify their dietary habits during the development of the study, but during the 72 h before each visit they will have to restrict the intake of polyphenol-rich foods (a detailed list will be provided).
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Cosa sta misurando lo studio?
Misure di risultato primarie
Misura del risultato |
Misura Descrizione |
Lasso di tempo |
---|---|---|
Postprandial glucose (300-420 min)
Lasso di tempo: Up to two months
|
Changes of postprandial blood glucose as result of supplementation with grapes, measured area under the curve for the period 300-420 min
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Up to two months
|
Altre misure di risultato
Misura del risultato |
Misura Descrizione |
Lasso di tempo |
---|---|---|
Postprandial glucose and insulin
Lasso di tempo: Up to four months
|
Changes of blood glucose (0-320 min) and insulin (0-300 and 300-420 min) as result of supplementation with grapes
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Up to four months
|
Plasma triglycerides
Lasso di tempo: Up to four months
|
Changes of plasma triglycerides (0-300 and 300-420 min) as result of supplementation with grapes
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Up to four months
|
Plasma uric acid
Lasso di tempo: Up to four months
|
Changes of plasma uric acid (0-300 and 300-420 min) as result of supplementation with grapes
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Up to four months
|
Plasma antioxidant capacity
Lasso di tempo: Up to five months
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Changes of plasma antioxidant capacity (0-300 and 300-420 min) as result of supplementation with grapes
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Up to five months
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Plasma viscosity
Lasso di tempo: Up to six months
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Changes of plasma viscosity (0-300 and 300-420 min) as result of supplementation with grapes.
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Up to six months
|
Satiety
Lasso di tempo: Up to three months
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Changes of satiety (0-300 and 300-420 min) as result of supplementation with grapes.
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Up to three months
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Collaboratori e investigatori
Sponsor
Collaboratori
Investigatori
- Investigatore principale: Jara Pérez-Jiménez, PhD, Institute of Food Science, Technology and Nutrition (ICTAN-CSIC)
Pubblicazioni e link utili
Studiare le date dei record
Studia le date principali
Inizio studio (Effettivo)
Completamento primario (Effettivo)
Completamento dello studio (Effettivo)
Date di iscrizione allo studio
Primo inviato
Primo inviato che soddisfa i criteri di controllo qualità
Primo Inserito (Effettivo)
Aggiornamenti dei record di studio
Ultimo aggiornamento pubblicato (Effettivo)
Ultimo aggiornamento inviato che soddisfa i criteri QC
Ultimo verificato
Maggiori informazioni
Termini relativi a questo studio
Parole chiave
Termini MeSH pertinenti aggiuntivi
Altri numeri di identificazione dello studio
- HRG_2018
Piano per i dati dei singoli partecipanti (IPD)
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Informazioni su farmaci e dispositivi, documenti di studio
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Queste informazioni sono state recuperate direttamente dal sito web clinicaltrials.gov senza alcuna modifica. In caso di richieste di modifica, rimozione o aggiornamento dei dettagli dello studio, contattare register@clinicaltrials.gov. Non appena verrà implementata una modifica su clinicaltrials.gov, questa verrà aggiornata automaticamente anche sul nostro sito web .