Randomised Three-arm Trial Investigating the Effects of Different Polyphenol and Prebiotic Combinations on Human Gut Microbiota and Perceived Cognitive State
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 20
- 试验地点
- 1
- 主要终点
- Mood Questionnaires
研究概览
简要总结
The aim of this study is to evaluate how different combinations of prebiotics and polyphenols affect the gut microbiota and perceived cognitive state. 40 volunteers will take part in this study who will be randomised into 4 different groups. One group will consume a placebo, whereas the other groups will consume prebiotics, polyphenols, or a combination of the two.
详细描述
- All participants will be asked to fill out a health screening questionnaire and inclusion/exclusion criteria will be reviewed for volunteer eligibility
- Valid informed consent will be obtained from the volunteer.
- Once the study begins, participants will be randomly allocated into 1 of 4 groups each assigned a different polyphenol or prebiotic product. the prebiotic content is dosed as follows: Inulin at 5g/d, GOS at 5g/d and Resistant Starch at 20g/d.
- Participants will be asked to consume their assigned product once per day. The length of the intervention is 14 days
- Participants will provide two stool samples: one on day 0 and one on day 14 of the study to identify changes in gut microbiota composition
- Urine samples will also be provided at day 0 and at day 14 looking for changes in urinary metabolites
- Participants will also be asked to fill out various mood related questionnaires on days 0 and 14 of the study.
- You will take your own blood pressure and heart rate on day 0 and day 14 and at least 3 times per week to try and link changes in gut microbiota composition with vascular health.
- Volunteers will be given containers and specimen pots to take home for initial and final faecal and urine collections. No treatment will be issued until initial stool and urine sample has been provided
- Maintenance of normal dietary patterns throughout the study is essential and participants will be required to complete food and drink logs throughout the study via a web-based app - on three consecutive days with one of the days being a weekend
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Prevention
- 盲法
- Single (Participant)
入排标准
- 年龄范围
- 18 Years 至 65 Years（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •Volunteer is healthy at the time of pre-examination
- •Volunteer has high perceived stress levels (own self-assessment)
- •Volunteer is aged ≥ 18 to ≤ 65 years at the time of pre-examination
- •Volunteer is able and willing to comply with the study instructions
- •Volunteer is suitable for participation in the study according to the investigator/study personnel
- •Written informed consent is given by volunteer
排除标准
- •No command of any local language
- •Gastrointestinal disorders including IBS, IBD or other conditions that might affect the gut environment
- •Food allergies or intolerances
- •Using drugs (e.g. antibiotics) influencing gastrointestinal function (8 weeks before intervention)
- •Use of laxatives
- •Participants with any form of diagnosed diabetes (types I and II)
- •Volunteers currently involved or will be involved in another clinical or food study
- •History of drug (pharmaceutical or recreational) or alcohol abuse.
- •participants are pregnant or are lactating
- •Regular intake of probiotic or prebiotic supplements
研究组 & 干预措施
Polyphenol
Consume polyphenol combination for two weeks
干预措施: Blueberry, cranberry, green tea extract, cocoa (Dietary Supplement)
Prebiotic
Consume prebiotic combination for two weeks
干预措施: GOS, Inulin, RS2 (Dietary Supplement)
prebiotic and polyphenol
Combination of prebiotics and polyphenols for two weeks
干预措施: prebiotics and polyphenols (Dietary Supplement)
Placebo
maltodextrin placebo for two weeks
干预措施: Maltodextrin (Dietary Supplement)
结局指标
主要结局
Mood Questionnaires
时间窗: baseline, pre-intervention, then After 14 days of intervention
various mood questionnaires
Bacteriology
时间窗: baseline, pre-intervention, then After 14 days of intervention
Changes in bacteriology
次要结局
- Blood pressure(baseline, pre-intervention, then After 14 days of intervention. at least three times per week also)
研究者
Glenn Gibson
Professor of Food Microbiology
University of Reading