Epidemiological studies suggest that certain foods rich in flavanols, including cocoa products, red wine, and tea, are associated with decreased cardiovascular mortality and morbidity. Dietary interventional studies have corroborated this finding and showed that flavanols can acutely and after sustained ingestion improve surrogate markers of cardiovascular risk including endothelial function. Endothelial dysfunction is the key event in the development and progression of cardiovascular disease. Aging is the major non-modifiable cardiovascular risk factor associated with progressive decline in endothelial function, vascular stiffening and increase in blood pressure. We hypothesize that flavanols can counteract age-dependent vascular changes by interacting with key mechanisms, most prominently endothelial function.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
PREVENTION
Masking
TRIPLE
Enrollment
44
Flavanol intervention drinks contain (400 mg flavanols) flavanol rich drink 2 x 400 mg 2 times a day over 2 weeks
Calorically, micro- and macronutrient matched control drink free of flavanols flavanol free drink 2 times a day over 2 weeks
Division of Cardiology, Pulmonology and Vascular Medicine
Düsseldorf, North Rhine-Westphalia, Germany
Endothelial function
Flow mediated dilatation (FMD)
Time frame: change in flow mediated dilatation between first treatment at day 0 and after last treatment at day 14
Plasma flavanol metabolites
Measured by HPLC
Time frame: analysis of metabolites between first treatment at day 0 and after last treatment at day 14
Ambulatory blood pressure
automatical measurements
Time frame: blood pressure at day 0 and at day 14
Pulse wave velocity
Measured by SphygmoCor
Time frame: 14 days
Microvascular function
Measured by Laserdoppler perfusion imaging (LDPI)
Time frame: 14 days
Augmentation index
Measured by SphygmoCor
Time frame: 14 days
Heart rate
Measured by ECG
Time frame: 14 days
Erythrocyte deformability
Measured by Laser-assisted Optical Rotation Cell Analyzer (LORCA)
Time frame: 14 days
NO bioavailability
Measured by CLD
Time frame: 14 days
This platform is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional.