Ta strona została przetłumaczona automatycznie i dokładność tłumaczenia nie jest gwarantowana. Proszę odnieść się do angielska wersja za tekst źródłowy.

Goji Berries and Energy Expenditure

31 stycznia 2017 zaktualizowane przez: Maastricht University Medical Center

The Effect of a Single Dose of Lycium Barbarum on Postprandial Energy Expenditure in Healthy Overweight Men

Effects of foods or food substances on energy expenditure are of particular interest, because of the increasing prevalence of obesity and its consequent metabolic diseases like type II diabetes and fatty liver disease, all risk factors for the development of cardiovascular diseases (CVDs). Recently, the Goji berry (Lycium Barbarum, wolfberry) was introduced into the Western diet. L. Barbarum originates from Asia, where it is used to improve the health of several organs. Although L. Barbarum is promoted as a super food with many beneficial effects, consistent scientific evidence for these effects is lacking. In one study, it was found that short-term intake of L. Barbarum polysaccharides - equal to 150 g of fresh berries - increased postprandial oxygen consumption. This indicates that L. Barbarum might exert beneficial effects on energy expenditure. Furthermore, long-term intervention trials have shown beneficial effects of L. Barbarum on lipid and glucose metabolism in mice and type II diabetic patients and on inflammatory status in healthy elderly. Altogether, L. Barbarum has the potential to be used as a functional food to increase metabolic health, but detailed information on the postprandial effects of L. Barbarum is missing. We therefore propose this double-blinded, randomized, placebo controlled intervention trial to investigate the effect of a single dose of L. Barbarum on postprandial energy expenditure substrate oxidation, metabolic flexibility, lipid and glucose metabolism and inflammatory markers.

Przegląd badań

Status

Zakończony

Warunki

Interwencja / Leczenie

Szczegółowy opis

Objectives:

The primary objective of this study is to investigate the effect of a single dose of L. Barbarum on postprandial energy expenditure. Secondary objectives are to investigate the effect of a single dose of L. Barbarum on postprandial lipid and carbohydrate oxidation and metabolic flexibility, on postprandial lipid and glucose metabolism and on inflammatory markers.

Study design:

This is a double blind, randomized, placebo-controlled intervention trial with two test days separated by a washout period of at least 1 week.

Study population:

The study population will consist of 20 apparently healthy overweight (BMI between 25 and 30 kg/m2) men aged 18-65 years.

Intervention:

All subjects will receive a mixed meal including 25 grams of dried L. Barbarum as the intervention product and a matched mixed meal without L. Barbarum as the placebo product. The meals will be matched for energy content and macronutrient composition.

Typ studiów

Interwencyjne

Zapisy (Rzeczywisty)

18

Faza

  • Nie dotyczy

Kontakty i lokalizacje

Ta sekcja zawiera dane kontaktowe osób prowadzących badanie oraz informacje o tym, gdzie badanie jest przeprowadzane.

Lokalizacje studiów

    • Limburg
      • Maastricht, Limburg, Holandia, 6229 ER
        • Maastricht University Medical Center

Kryteria uczestnictwa

Badacze szukają osób, które pasują do określonego opisu, zwanego kryteriami kwalifikacyjnymi. Niektóre przykłady tych kryteriów to ogólny stan zdrowia danej osoby lub wcześniejsze leczenie.

Kryteria kwalifikacji

Wiek uprawniający do nauki

18 lat do 65 lat (Dorosły, Starszy dorosły)

Akceptuje zdrowych ochotników

Tak

Płeć kwalifikująca się do nauki

Męski

Opis

Inclusion Criteria:

  • Male gender
  • BMI between 25 and 30 kg/m2
  • Non-smoking
  • Normal fasting triacylglycerol levels (<2.2 mmol/L)
  • No hyperglycaemia or hypercholesterolemia (fasting glucose < 7.0 mmol/L and total cholesterol < 8.0 mmol/L)
  • Willing to comply to the study protocol during the study
  • Agreeing to be informed about medically relevant personal test-results

Exclusion Criteria:

  • Use of anticoagulant medication
  • Unstable body weight (weight gain or loss >3 kg in the past 3 months)
  • Indications of treatment according to the Standard for Cardiovascular Risk Management from the Dutch General Practitioners community
  • Any medical condition that might interfere with study measurements, judged by the principal investigator, including cardiovascular disease or events (e.g. acute myocardial infarction or cerebra-vascular accident), diabetes or hypercholesterolemia
  • Use of any kind of medication or medically prescribed diet, which can interfere with the study (judged by the principal investigator). The use of paracetamol is allowed
  • Use of oral antibiotics (with the exception of topical antibiotics) in 40 days or less prior to the start of the study
  • Use of food supplements or plant-sterol/stanol-enriched foods or supplements in the three weeks prior to the screening and/or during the study
  • Not willing to abstain from L. Barbarum consumption thee weeks before the start and during the trial
  • Severe medical conditions that might interfere with the study, such as epilepsy, asthma, chronic obstructive pulmonary disease and rheumatoid arthritis
  • Consumption of > 14 alcohol consumptions a week
  • Reported intense sporting activities > 10 hours a week
  • Abuse of drugs
  • Participation in any other biomedical trial one month prior to the screening visit
  • Having donated > 150 ml blood within 1 month prior to the screening visit, planning to donate blood during the study or within one month after finishing the study
  • Impossible or difficult to puncture as evidenced during the screening visit

Plan studiów

Ta sekcja zawiera szczegółowe informacje na temat planu badania, w tym sposób zaprojektowania badania i jego pomiary.

Jak projektuje się badanie?

Szczegóły projektu

  • Główny cel: Zapobieganie
  • Przydział: Randomizowane
  • Model interwencyjny: Zadanie krzyżowe
  • Maskowanie: Podwójnie

Broń i interwencje

Grupa uczestników / Arm
Interwencja / Leczenie
Eksperymentalny: Lycium Barbarum mixed meal
Subjects will receive a high-fat mixed meal containing Lycium Barbarum once.
This mixed meal contains 25 grams of dried Lycium Barbarum (Goji berry, Wolfberry)
Aktywny komparator: Control mixed meal
Subjects will receive a high-fat mixed meal without Lycium Barbarum as a control.
This mixed meal does not contain Lycium Barbarum, but is matched for energy and macronutrient content

Co mierzy badanie?

Podstawowe miary wyniku

Miara wyniku
Opis środka
Ramy czasowe
Change from baseline energy expenditure
Ramy czasowe: Measured as the incremental area under the curve (iAUC) from 0 minutes to 140 minutes after meal intake
Energy expenditure will be measured using indirect calorimetry (ventilated hood system). This system measures oxygen consumption (VO2) and carbon dioxide production (VCO2) to calculate the energy expenditure (kJ/min)
Measured as the incremental area under the curve (iAUC) from 0 minutes to 140 minutes after meal intake

Miary wyników drugorzędnych

Miara wyniku
Opis środka
Ramy czasowe
Change from baseline energy expenditure
Ramy czasowe: Measured as the incremental area under the curve (iAUC) from 160 minutes to 200 minutes and from 220 minutes to 260 minutes after meal intake
Energy expenditure will be measured using indirect calorimetry (ventilated hood system). This system measures VO2 and VCO2 to calculate the energy expenditure (kJ/min).
Measured as the incremental area under the curve (iAUC) from 160 minutes to 200 minutes and from 220 minutes to 260 minutes after meal intake
Postprandial lipid and glucose oxidation
Ramy czasowe: At baseline (T0, fasting) and between 0 minutes and 140 minutes, between 160 minutes and 200 minutes and between 220 minutes and 260 minutes after meal consumption
Lipid and glucose oxidation will be calculated from indirect calorimetry data (VO2 and VCO2).
At baseline (T0, fasting) and between 0 minutes and 140 minutes, between 160 minutes and 200 minutes and between 220 minutes and 260 minutes after meal consumption
Metabolic flexibility
Ramy czasowe: At 60, 120, 180 and 240 minutes after meal intake
Metabolic flexibility will be derived from indirect calorimetry as the difference in respiratory quotient (RQ) between fasting and postprandial conditions.
At 60, 120, 180 and 240 minutes after meal intake
Markers for lipid metabolism
Ramy czasowe: At baseline (T0) and at regular intervals up to 240 minutes after meal consumption
Several markers for lipid metabolism will be measured in blood samples.
At baseline (T0) and at regular intervals up to 240 minutes after meal consumption
Markers for glucose metabolism
Ramy czasowe: At baseline (T0) and at regular intervals up to 240 minutes after meal consumption
Several markers for glucose metabolism will be measured in blood samples.
At baseline (T0) and at regular intervals up to 240 minutes after meal consumption
Inflammatory status
Ramy czasowe: At baseline (T0) and at 60, 120, 180 and 240 minutes after meal consumption
Several markers for inflammatory status will be measured in blood samples and in vitro conditions
At baseline (T0) and at 60, 120, 180 and 240 minutes after meal consumption

Współpracownicy i badacze

Tutaj znajdziesz osoby i organizacje zaangażowane w to badanie.

Sponsor

Daty zapisu na studia

Daty te śledzą postęp w przesyłaniu rekordów badań i podsumowań wyników do ClinicalTrials.gov. Zapisy badań i zgłoszone wyniki są przeglądane przez National Library of Medicine (NLM), aby upewnić się, że spełniają określone standardy kontroli jakości, zanim zostaną opublikowane na publicznej stronie internetowej.

Główne daty studiów

Rozpoczęcie studiów (Rzeczywisty)

1 kwietnia 2016

Zakończenie podstawowe (Rzeczywisty)

1 grudnia 2016

Ukończenie studiów (Rzeczywisty)

1 grudnia 2016

Daty rejestracji na studia

Pierwszy przesłany

18 kwietnia 2016

Pierwszy przesłany, który spełnia kryteria kontroli jakości

18 maja 2016

Pierwszy wysłany (Oszacować)

23 maja 2016

Aktualizacje rekordów badań

Ostatnia wysłana aktualizacja (Oszacować)

1 lutego 2017

Ostatnia przesłana aktualizacja, która spełniała kryteria kontroli jakości

31 stycznia 2017

Ostatnia weryfikacja

1 kwietnia 2016

Więcej informacji

Terminy związane z tym badaniem

Dodatkowe istotne warunki MeSH

Inne numery identyfikacyjne badania

  • METC 15-3-060

Te informacje zostały pobrane bezpośrednio ze strony internetowej clinicaltrials.gov bez żadnych zmian. Jeśli chcesz zmienić, usunąć lub zaktualizować dane swojego badania, skontaktuj się z register@clinicaltrials.gov. Gdy tylko zmiana zostanie wprowadzona na stronie clinicaltrials.gov, zostanie ona automatycznie zaktualizowana również na naszej stronie internetowej .