Tämä sivu käännettiin automaattisesti, eikä käännösten tarkkuutta voida taata. Katso englanninkielinen versio lähdetekstiä varten.

Acute Effects of Coffee on Appetite and Inflammation Markers, Glucose Metabolism and Energy Intake

perjantai 26. heinäkuuta 2013 päivittänyt: M. Yannakoulia, Harokopio University

Acute Effects of Caffeinated and Decaffeinated Coffee Consumption on Energy Intake, Appetite, Inflammation and Glucose Metabolism

The purpose of the study is to investigate whether caffeinated and decaffeinated coffee consumption has acute effects on subjective appetite feelings, energy intake and biochemical markers related to appetite, inflammation and glucose metabolism compared to water consumption.

Tutkimuksen yleiskatsaus

Tila

Valmis

Ehdot

Interventio / Hoito

Yksityiskohtainen kuvaus

Coffee is a pharmacologically active, widely consumed beverage. Scientific interest in relation to coffee consumption has been revisited the last decade in the light of new, mainly epidemiological, evidence indicating its potential health benefits. In specific, both cross-sectional and prospective studies indicate that coffee consumption is associated with a lower risk for type 2 diabetes. Furthermore, an inverse association has been found between coffee consumption and markers of inflammation and endothelial dysfunction in healthy and/or diabetic participants, although the opposite effect has also been reported, mainly in relation to inflammation markers. In relation to body weight, epidemiological data suggest that increment in caffeine consumption is associated with lower mean weight gain and energy intake during a 12-y period.

However, information from clinical studies is scarce. Acute caffeine and/or coffee consumption have been associated with impaired glucose metabolism and insulin resistance. In relation to inflammation, animal studies have indicated a beneficial or no effect of coffee consumption, whereas a clinical study in humans found an increase in adiponectin and a decrease in interleukin-18 (IL-18) blood concentrations after a monthly intervention including daily consumption of 8 cups of coffee. As far as energy balance is concerned, there is an early experiment demonstrating that the ingestion of 300 mg of caffeine prior to food intake, compared to the non-caffeine intake, significantly reduced energy intake by 21.7% in men, but not in women. A more recent study has found that the combination of caffeine and red pepper is positively associated with energy expenditure and negatively with energy intake, whereas, it has also been reported a positive association between habitual caffeine intake and body weight loss achieved through a very-low-calorie diet.

Taking into consideration the limited clinical evidence regarding the acute effect of coffee consumption on appetite-related markers, subsequent energy intake and inflammatory markers, we undertook a clinical study of crossover design to investigate the short-term changes on energy intake, subjective appetite ratings, appetite hormones, inflammation markers and glucose metabolism after caffeinated and decaffeinated coffee consumption.

Opintotyyppi

Interventio

Ilmoittautuminen (Todellinen)

16

Vaihe

  • Ei sovellettavissa

Yhteystiedot ja paikat

Tässä osiossa on tutkimuksen suorittajien yhteystiedot ja tiedot siitä, missä tämä tutkimus suoritetaan.

Opiskelupaikat

  • Kreikka
      • Athens, Kreikka, 17671
        • Metabolic Unit of the Department of Nutrition and Dietetics, Harokopio University

Osallistumiskriteerit

Tutkijat etsivät ihmisiä, jotka sopivat tiettyyn kuvaukseen, jota kutsutaan kelpoisuuskriteereiksi. Joitakin esimerkkejä näistä kriteereistä ovat henkilön yleinen terveydentila tai aiemmat hoidot.

Kelpoisuusvaatimukset

Opintokelpoiset iät

18 vuotta - 40 vuotta (Aikuinen)

Hyväksyy terveitä vapaaehtoisia

Joo

Sukupuolet, jotka voivat opiskella

Uros

Kuvaus

Inclusion Criteria:

  • healthy
  • non-obese

Exclusion Criteria:

  • smokers
  • restrained eaters (as this was evaluated using the Dutch Eating Behaviour Questionnaire and a total score > 2.5)
  • those who reported slimming or any other dietary regime
  • abstainers from caffeine sources
  • athletes during competition period
  • participants with a known diagnosis of either hypertension, diabetes, impaired glucose tolerance or a fasting blood glucose concentration above 125 mg/dl
  • subjects on medication for hypertension or on medication known to alter glucose metabolism
  • subjects who were on medication that may have an impact on appetite and sensory functioning or who reported a metabolic or endocrine disease, gastrointestinal disorders, or a history of medical or surgical events that may have affected the study outcomes

Opintosuunnitelma

Tässä osiossa on tietoja tutkimussuunnitelmasta, mukaan lukien kuinka tutkimus on suunniteltu ja mitä tutkimuksella mitataan.

Miten tutkimus on suunniteltu?

Suunnittelun yksityiskohdat

  • Ensisijainen käyttötarkoitus: Hoito
  • Jako: Satunnaistettu
  • Inventiomalli: Crossover-tehtävä
  • Naamiointi: Yksittäinen

Aseet ja interventiot

Osallistujaryhmä / Arm
Interventio / Hoito
Kokeellinen: caffeinated coffee
200 mL caffeinated coffee with 3 mg caffeine per kg body weight
Muut: caffeinated and decaffeinated coffee
3 treatments on separate days, i.e. a standard breakfast with oral ingestion of 200 ml of either caffeinated coffee (3mg caffeine/kg body weight), decaffeinated coffee or water
Kokeellinen: decaffeinated coffee
200 mL decaffeinated coffee, same amount as caffeinated coffee
Muut: caffeinated and decaffeinated coffee
3 treatments on separate days, i.e. a standard breakfast with oral ingestion of 200 ml of either caffeinated coffee (3mg caffeine/kg body weight), decaffeinated coffee or water
Kokeellinen: Water
200 mL, control intervention
Muut: caffeinated and decaffeinated coffee
3 treatments on separate days, i.e. a standard breakfast with oral ingestion of 200 ml of either caffeinated coffee (3mg caffeine/kg body weight), decaffeinated coffee or water

Mitä tutkimuksessa mitataan?

Ensisijaiset tulostoimenpiteet

Tulosmittaus
Toimenpiteen kuvaus
Aikaikkuna
Ghrelin Total Area Under the Curve
Aikaikkuna: 15 min before ingestion to 3 hr post ingestion
Total area under the curve was defined as the sum of the areas under and over the baseline using the trapezoidal rule. The time points for the calculations were 15 min before beverage consumption, immediately after beverage consumption, 15, 30, 60, 90, 120, 150, 180 min postconsumption.
15 min before ingestion to 3 hr post ingestion
Peptide Tyrosine Tyrosine (PYY) Total Area Under the Curve
Aikaikkuna: 15 min before ingestion to 3 hr post ingestion
Total area under the curve was defined as the sum of the areas under and over the baseline using the trapezoidal rule. The time points for the calculations were 15 min before beverage consumption, immediately after beverage consumption, 15, 30, 60, 90, 120, 150, 180 min postconsumption.
15 min before ingestion to 3 hr post ingestion
Glucagon-like Peptide-1 (GLP-1) Total Area Under the Curve
Aikaikkuna: 15 min before ingestion to 3 hr post ingestion
Total area under the curve was defined as the sum of the areas under and over the baseline using the trapezoidal rule. The time points for the calculations were 15 min before beverage consumption, immediately after beverage consumption, 15, 30, 60, 90, 120, 150, 180 min postconsumption.
15 min before ingestion to 3 hr post ingestion
Adiponectin Total Area Under the Curve
Aikaikkuna: 15 min before ingestion to 3 h post ingestion
Total area under the curve was defined as the sum of the areas under and over the baseline using the trapezoidal rule. The time points for the calculations were 15 min before beverage consumption, immediately after beverage consumption, 15, 30, 60, 90, 120, 150, 180 min postconsumption.
15 min before ingestion to 3 h post ingestion
Inteleukin-6 Total Area Under the Curve
Aikaikkuna: 15 min before ingestion to 3 hr post ingestion
Total area under the curve was defined as the sum of the areas under and over the baseline using the trapezoidal rule. The time points for the calculations were 15 min before beverage consumption, immediately after beverage consumption, 15, 30, 60, 90, 120, 150, 180 min postconsumption.
15 min before ingestion to 3 hr post ingestion
Interleukin-18 Total Area Under the Curve
Aikaikkuna: 15 min before ingestion to 3 hr post ingestion
Total area under the curve was defined as the sum of the areas under and over the baseline using the trapezoidal rule. The time points for the calculations were 15 min before beverage consumption, immediately after beverage consumption, 15, 30, 60, 90, 120, 150, 180 min postconsumption.
15 min before ingestion to 3 hr post ingestion
Glucose Total Area Under the Curve
Aikaikkuna: 15 min before ingestion to 3 hr post ingestion
Total area under the curve was defined as the sum of the areas under and over the baseline using the trapezoidal rule. The time points for the calculations were 15 min before beverage consumption, immediately after beverage consumption, 15, 30, 60, 90, 120, 150, 180 min postconsumption.
15 min before ingestion to 3 hr post ingestion
Insulin Total Area Under the Curve
Aikaikkuna: 15 min before ingestion to 3 hr post ingestion
Total area under the curve was defined as the sum of the areas under and over the baseline using the trapezoidal rule. The time points for the calculations were 15 min before beverage consumption, immediately after beverage consumption, 15, 30, 60, 90, 120, 150, 180 min postconsumption.
15 min before ingestion to 3 hr post ingestion
Cortisol Total Area Under the Curve
Aikaikkuna: 15 min before ingestion to 3 hr post ingestion
Total area under the curve was defined as the sum of the areas under and over the baseline using the trapezoidal rule. The time points for the calculations were 15 min before beverage consumption, immediately after beverage consumption, 15, 30, 60, 90, 120, 150, 180 min postconsumption.
15 min before ingestion to 3 hr post ingestion
Energy ad Libitum Meal
Aikaikkuna: 3 hr post ingestion
The energy of first meal 3 hr after ingestion
3 hr post ingestion
Total Energy Intake
Aikaikkuna: 1 d
the energy consumed at breakfast, ad libitum meal and rest of the experimental day
1 d

Toissijaiset tulostoimenpiteet

Tulosmittaus
Toimenpiteen kuvaus
Aikaikkuna
Serum Antioxidant Capacity Total Area Under the Curve
Aikaikkuna: 15 min before ingestion to 21/2 hr post ingestion

Serum samples, collected 15 min before ingestion, immediately after ingestion, 15 min, 30 min, 60 min, 90 min, 120 min and 150 min after ingestion were analyzed for the ex vivo serum resistance to oxidative stress, that was induced by copper sulfate (CuSO4). The analysis of all collected samples was performed by the measurement of conjugated diene formation, which was monitored for every sample of all time points every 2 min for a 3.5 h period at 234 nm in a microplate spectrophotometer.

Total area under the curve was defined as the sum of the areas under and over the baseline using the trapezoidal rule. The time points for the calculations were 15 min before beverage consumption, immediately after beverage consumption, 15, 30, 60, 90, 120, 150 min postconsumption.
15 min before ingestion to 21/2 hr post ingestion

Yhteistyökumppanit ja tutkijat

Täältä löydät tähän tutkimukseen osallistuvat ihmiset ja organisaatiot.

Sponsori

Harokopio University

Yhteistyökumppanit

Beth Israel Deaconess Medical Center

Tutkijat

  • Opintojohtaja: Mary Yannakoulia, PhD, Harokopio University

Julkaisuja ja hyödyllisiä linkkejä

Tutkimusta koskevien tietojen syöttämisestä vastaava henkilö toimittaa nämä julkaisut vapaaehtoisesti. Nämä voivat koskea mitä tahansa tutkimukseen liittyvää.

Yleiset julkaisut

Opintojen ennätyspäivät

Nämä päivämäärät seuraavat ClinicalTrials.gov-sivustolle lähetettyjen tutkimustietueiden ja yhteenvetojen edistymistä. National Library of Medicine (NLM) tarkistaa tutkimustiedot ja raportoidut tulokset varmistaakseen, että ne täyttävät tietyt laadunvalvontastandardit, ennen kuin ne julkaistaan ​​julkisella verkkosivustolla.

Opi tärkeimmät päivämäärät

Opiskelun aloitus

Sunnuntai 1. helmikuuta 2009

Ensisijainen valmistuminen (Todellinen)

Perjantai 1. toukokuuta 2009

Opintojen valmistuminen (Todellinen)

Perjantai 1. toukokuuta 2009

Opintoihin ilmoittautumispäivät

Ensimmäinen lähetetty

Maanantai 26. heinäkuuta 2010

Ensimmäinen toimitettu, joka täytti QC-kriteerit

Maanantai 2. elokuuta 2010

Ensimmäinen Lähetetty (Arvio)

Tiistai 3. elokuuta 2010

Tutkimustietojen päivitykset

Viimeisin päivitys julkaistu (Arvio)

Maanantai 30. syyskuuta 2013

Viimeisin lähetetty päivitys, joka täytti QC-kriteerit

Perjantai 26. heinäkuuta 2013

Viimeksi vahvistettu

Maanantai 1. heinäkuuta 2013

Lisää tietoa

Tähän tutkimukseen liittyvät termit

Avainsanat

Muita asiaankuuluvia MeSH-ehtoja

Muut tutkimustunnusnumerot

  • CofSt

Nämä tiedot haettiin suoraan verkkosivustolta clinicaltrials.gov ilman muutoksia. Jos sinulla on pyyntöjä muuttaa, poistaa tai päivittää tutkimustietojasi, ota yhteyttä register@clinicaltrials.gov. Heti kun muutos on otettu käyttöön osoitteessa clinicaltrials.gov, se päivitetään automaattisesti myös verkkosivustollemme .

Kliiniset tutkimukset Terveys

Hae vastaavia kokeiluja

Sponsorit ja yhteistyökumppanit

Sairaudet

Huumeiden interventiot

CROs by country

CROs in Congo, DR of

Ehdot

Harvinaiset sairaudet

Huumeiden interventiot

Ravintolisät

Sponsori / yhteistyökumppanit

Sijainnit

3
Tilaa