The Effect of Pomegranate Extract on Anthropometric, Physiological and Biochemical Parameters in Human Volunteers: an 8 Week Parallel, Double Blinded, Placebo Controlled, Randomised Trial.
试验速览
- 阶段
- 不适用
- 入组人数
- 55
- 试验地点
- 1
- 主要终点
- Changes in measurements of body mass indicators
研究概览
简要总结
Pomegranate has gained widespread popularity since the health effects of the whole fruit, as well as its juices and extracts, have been studied in relation to a variety of chronic conditions such as hypertension, diabetes, obesity, cancer and cardiovascular disease.
The fruit consists of peel, seeds and berries or arils. The peel is rich in minerals and compounds such as polyphenols, but is not an edible part of the plant. In order to harness the benefits of all parts of the fruit, the whole fruit can be crushed and powdered and then easily consumed as pomegranate extract capsules.
Pomegranate has been shown to be effective at reducing cardiovascular disease risk factors, particularly with respect to decreasing blood pressure and increasing insulin sensitivity. Dietary polyphenols may also suppress body fat growth. Recently, positive effects on fat reduction have been shown using pomegranate and its extracts. In animal models it has been shown for both extract and leaf that there were significant decrease in food consumption and body weight, inhibiting the development of obesity. In the few human studies, there appeared to be a trend towards a reduction in waist circumference and fat mass, plus a halt in body weight increase, for both juice and seed oil.
This parallel, double blinded, randomised, placebo controlled trial aims to confirm previous results concerning the effect of whole pomegranate fruit on biochemical and physiological markers using a new pomegranate extract and to conduct original work to explore its effect on body weight, measurements and fat mass. Any similar interventions have not been double blinded or used pomegranate in extract form. Changes in physiological and biochemical markers will also be investigated.
The study hypothesis is that pomegranate extract will reduce BMI and body weight, fat mass, body measurements and blood pressure.
详细描述
This is a parallel, double blinded, placebo controlled, randomised trial. It will be conducted over an 8 week intervention phase, plus a pre-intervention registration and preparation period. Participants will be randomly assigned to either the pomegranate extract or placebo groups. One capsule of Pomegranate or placebo will be taken after the same time daily meal with water for 8 weeks.
Participants will be asked to visit the clinical lab three times. The first visit will be for baseline measurements and a 24 hour urine sample before the intervention begins; the second in week 4 for measurements only and the final visit in week 8 for measurements and the last urine collection. Blood pressure and anthropometric measurements will be taken at each visit. Urine will only be collected pre and post intervention.
The health related Quality of Life Questionnaire (Rand 36) will be administered at both the initial and final visits. This series of questions covers eight spheres of health and has been proven to be scientifically robust having been used in over 200 health related scientific trials.
Three day diet diaries will be used for recording energy intake and to determine any fluctuations in dietary intake over the study period. These will be completed by participants in the pre-intervention week and then at week 4 of the intervention. Participants complete 2 diet diaries in total.
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
- Triple (Participant, Investigator, Outcomes Assessor)
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
- •Healthy volunteers with a BMI within the range of 18-34.9 kg/m².
排除标准
- •Taking medications for heart, liver or kidney disease, or diabetes;
- •recent weight loss within 2 months preceding the study;
- •pregnancy;
- •lactation;
- •allergies to pomegranate.
研究组 & 干预措施
Placebo capsule
1.1g placebo capsule taken daily by each participant for 8 weeks
Pomegranate extract
1.1g pomegranate extract capsule administered daily to each participant for 8 weeks
干预措施: Pomegranate extract (Dietary Supplement)
结局指标
主要结局
Changes in measurements of body mass indicators
时间窗: Week 0, 4, 8
These indicators are: Body weight; height; BMI; waist, hip and mid-upper arm circumference; fat and fat free mass.
次要结局
- Changes in blood pressure(Week 0, 4, 8)
研究者
Angela Stockton
Ph.D. Researcher
Queen Margaret University