Overweight and Obesity
Conditions
Keywords
Hydroxycinnamates, Beta-glucan, Green coffee bean extract, Dietary supplement
Brief summary
Randomized, double blind, parallel study to assess the effect of a dietary supplement combining polyphenols (hydroxycinnamates from green coffee) and a soluble dietary fiber (oat beta-glucans) in obese/overweight subjects.
Detailed description
This pilot study intends to select the best combination of beta-glucan and a green coffee bean phenolic extract. Four different supplements were formulated, containing 3 or 5 g of two types of beta-glucan, with 35% and 70% b-glucan content, together with 600 mg of the green coffee bean extract. Blind sachets were prepared containing half the daily dose of the supplement. 60 overweight/obese male and female volunteers (BMI 25-35 kg/m2, 18-60 y old) were recruited and randomly assigned to one of the four intervention groups. Volunteers were instructed to consume one sachet half an hour before lunch and dinner dissolved in 250 mL water daily during 6 weeks. At the beginning and at the end of the study, volunteers came to the Human Nutrition Unit at the research center after an overnight fast. Urine and blood samples were obtained, blood pressure was measured and anthropometric measurements were performed. Dietary and physical activity records were collected.
Interventions
Dose-response study on the effect of two different types of oat beta-glucan with different b-glucan content (35% vs. 70%) in combination with a green coffee bean extract rich in polyphenols. Consumption of 2 sachets/day (providing 3 or 5 g/d beta-glucan plus 600 mg polyphenols) during 6 weeks
Sponsors
Study design
Masking description
Blind sachets
Intervention model description
Randomized, parallel, double blind study
Eligibility
Inclusion criteria
* Overweight/obese subjects (BMI 25-35 kg/m2)
Exclusion criteria
* Smokers * Pregnant women * Medication/consumption of vitamins, dietary supplements, etc.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Anthropometric changes | End of 6-week intervention | Modification in body weight/percentage body fat |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Modification in blood lipids | End of 6-week intervention | Change in total or LDL-cholesterol levels or triglyceride levels |
Countries
Spain