- ICH GCP
- Registro de ensaios clínicos dos EUA
- Ensaio Clínico NCT01832701
Coffee, Exercise, and Oxidative Stress
Coffee and Oxidative Stress During Exercise in Healthy Humans
Visão geral do estudo
Status
Condições
Intervenção / Tratamento
Descrição detalhada
Coffee is one of the most widely consumed beverages. It contains polyphenols (chlorogenic acids) and bioavailability of these bioactive compounds is now somewhat well understood. However, even if chlorogenic acids are known to be antioxidants in the cup, reliable evidence remains to be observed in vivo.
After medical examination and approval, subjects will undergo 2 periods of 21 days. The first 7 days will consist of a dietary restriction to lower the polyphenols intake. Then subjects will drink at random one of the three treatments for 14 days (4 cups/day). Blood and urine samples will be collected throughout the study to evaluate in vivo effects on oxidative biomarkers. Furthermore, at day 21, subjects will undergo a physical regimen to increase acutely and transiently their oxidative damage. Blood and urine samples collected throughout this challenge will allow us to evaluate the effect of coffee intake in reducing oxidative damage created by exercise compared to placebo.
Tipo de estudo
Inscrição (Real)
Estágio
- Não aplicável
Contactos e Locais
Locais de estudo
-
-
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Lausanne, Suíça, 1000
- Clinical Development Unit / Metabolic Unit
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-
Critérios de participação
Critérios de elegibilidade
Idades elegíveis para estudo
Aceita Voluntários Saudáveis
Gêneros Elegíveis para o Estudo
Descrição
Inclusion Criteria:
- Healthy
- Normal and overweight subjects (BMI 19 - 29), with lean mass below the 90th percentile value
- Coffee drinkers with an average consumption of 1-3 cups per day
- Having given informed consent
- VO2 max as a function of age and gender, not higher than the values below:
Max oxygen uptake (VO2max, in ml/kg/min) in non athletes Age Males Females 20-29 49 41 30-39 47 39 40-49 45 37
Exclusion Criteria:
- Digestive (intestinal, gastric, hepatic or pancreatic), renal or metabolic disease, as determined by the medical (screening) visit and a blood chemistry analysis (glucose, cholesterol, LDL, HDL, triglycerides, aspartate transaminase (ASAT), Alanine transaminase (ALAT), C reactive Protein (CRP), creatinin)
Subjects at cardio-vascular risk rated as intermediate or high (according to the Swiss Society of Cardiology, lipids group (www.agla.ch/p11-1-2.html), meaning those who show at least one of the following criteria:
- History of coronary disease / atherosclerosis
- Diabetes
- High level of risk (familial hypercholesterolemia, hyperlipoproteinemia type III, hypertension)
- Metabolic syndrome defined by the presence of at least 3 out of the following criteria :
Abdominal circumference > 102 cm in men, > 88 cm in women Fasting triglycerides ≥ 1.7 mmol/l HDL-cholesterol < 1.0 mmol/l in men, < 1.3 mmol/l in women Systolic arterial blood pressure ≥ 130 mm Hg and/or diastolic arterial blood pressure ≥ 85 mm Hg Plasma glucose ≥ 6.1 mmol/l
- Anemia (Erythrocytes < 4.6 T/l (male) or < 4.2 T/l (women); Hemoglobin Hb < 13 g/dl (male) or Hb < 12 g/dl (women); Hematocrit Ht < 40% (male) or Ht < 37% (women); sera iron < 0.6 mg/l or plasma ferritin < 120 microg /l (male) or < 60 microg/l (non menopausal women)
- Troubles of hemostasis as determined by platelets number, prothrombin time and activated partial thromboplastin time
- Have had a gastrointestinal surgery, except appendicectomy
- Pregnancy
- History of food or medication allergy
- Have a regular consumption of medication (only those impacting oxidative stress biomarkers (eg. impacting the metabolism of lipids / LDL / VLDL), oral contraception excepted)
- Have taken antibiotic therapy within the last 3 months
- Smokers (more than 5 cigarettes per day)
- Having given blood within the last month, or willing to make a blood donation until one month following the end of the study
- Have a high alcohol consumption (more than 2 drinks/day)
- Taking more than 3 cups of coffee per day
- Consumption of illicit drugs
- Subject who cannot be expected to comply with the study procedures, including consuming the test products.
- Currently participating or having participated in another clinical trial during the last month prior to the beginning of this study.
Plano de estudo
Como o estudo é projetado?
Detalhes do projeto
- Alocação: Randomizado
- Modelo Intervencional: Atribuição cruzada
- Mascaramento: Triplo
Armas e Intervenções
Grupo de Participantes / Braço |
Intervenção / Tratamento |
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Experimental: coffee
4 cups of soluble coffee per day (2.5g per cup)
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maltodextrine with caffeine
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Comparador de Placebo: Maltodextrine with caffeine
4 cups per day containing 2.5 g of product each
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coffee versus placebo
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O que o estudo está medindo?
Medidas de resultados primários
Medida de resultado |
Descrição da medida |
Prazo |
---|---|---|
oxidative stress
Prazo: Change in oxidative stress from baseline to the last day of a 14-day period of product intake
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Oxidative stress will be assessed though urine beta-isoprostane measurements
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Change in oxidative stress from baseline to the last day of a 14-day period of product intake
|
Medidas de resultados secundários
Medida de resultado |
Descrição da medida |
Prazo |
---|---|---|
Bioavailability of coffee antioxidative compounds
Prazo: Change in urine phenolic and chlorogenic acids from baseline to the last day of a 14-day period of product intake
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Measures of phenolic and chlorogenic acids in urine
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Change in urine phenolic and chlorogenic acids from baseline to the last day of a 14-day period of product intake
|
Colaboradores e Investigadores
Patrocinador
Investigadores
- Investigador principal: Maurice Beaumont, MD, Clinical Development Unit / Metabolic Unit
Datas de registro do estudo
Datas Principais do Estudo
Início do estudo
Conclusão Primária (Real)
Conclusão do estudo (Real)
Datas de inscrição no estudo
Enviado pela primeira vez
Enviado pela primeira vez que atendeu aos critérios de CQ
Primeira postagem (Estimativa)
Atualizações de registro de estudo
Última Atualização Postada (Estimativa)
Última atualização enviada que atendeu aos critérios de controle de qualidade
Última verificação
Mais Informações
Termos relacionados a este estudo
Outros números de identificação do estudo
- 10.38.MET
Essas informações foram obtidas diretamente do site clinicaltrials.gov sem nenhuma alteração. Se você tiver alguma solicitação para alterar, remover ou atualizar os detalhes do seu estudo, entre em contato com register@clinicaltrials.gov. Assim que uma alteração for implementada em clinicaltrials.gov, ela também será atualizada automaticamente em nosso site .
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