Coffee, Exercise, and Oxidative Stress
Coffee and Oxidative Stress During Exercise in Healthy Humans
調査の概要
詳細な説明
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.
研究の種類
入学 (実際)
段階
- 適用できない
連絡先と場所
研究場所
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Lausanne、スイス、1000
- Clinical Development Unit / Metabolic Unit
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参加基準
適格基準
就学可能な年齢
健康ボランティアの受け入れ
受講資格のある性別
説明
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.
研究計画
研究はどのように設計されていますか?
デザインの詳細
- 割り当て:ランダム化
- 介入モデル:クロスオーバー割り当て
- マスキング:トリプル
武器と介入
参加者グループ / アーム |
介入・治療 |
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実験的:coffee
4 cups of soluble coffee per day (2.5g per cup)
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maltodextrine with caffeine
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プラセボコンパレーター: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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この研究は何を測定していますか?
主要な結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
---|---|---|
oxidative stress
時間枠: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
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二次結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
---|---|---|
Bioavailability of coffee antioxidative compounds
時間枠: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
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協力者と研究者
捜査官
- 主任研究者:Maurice Beaumont, MD、Clinical Development Unit / Metabolic Unit
研究記録日
主要日程の研究
研究開始
一次修了 (実際)
研究の完了 (実際)
試験登録日
最初に提出
QC基準を満たした最初の提出物
最初の投稿 (見積もり)
学習記録の更新
投稿された最後の更新 (見積もり)
QC基準を満たした最後の更新が送信されました
最終確認日
詳しくは
本研究に関する用語
その他の研究ID番号
- 10.38.MET
この情報は、Web サイト clinicaltrials.gov から変更なしで直接取得したものです。研究の詳細を変更、削除、または更新するリクエストがある場合は、register@clinicaltrials.gov。 までご連絡ください。 clinicaltrials.gov に変更が加えられるとすぐに、ウェブサイトでも自動的に更新されます。
Placebo comparatorの臨床試験
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Stanford University募集
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Palacky University完了
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University of the Basque Country (UPV/EHU)Geistlich Pharma AG完了