The aim of this study is to investigate the postprandial effects of fat content and fatty acid composition of mixed meals on parameters associated with cardiometabolic diseases. Therefore, older subjects with increased risk of cardiometabolic diseases consume 4 mixed meals with 25 or 50 g of either canola or coconut oil. In a postprandial period of 6 hours, outcomes associated with cardiometabolic risk (e.g., triglycerides) are analyzed.
In a crossover design, 30 older men and women with increased risk of cardiometabolic diseases consume 4 mixed meals, enriched with either 25 or 50 g canola or coconut oil. During a postprandial period of 6 hours, parameters of lipid metabolism (e.g., plasma triglycerides), glucose metabolism (e.g., plasma glucose, serum insulin), as well as markers of inflammation (e.g., IL-6), vascular system (e.g., pulse wave velocity) and antioxidant system (e.g., trolox equivalent antioxidative capacity) are analyzed. Furthermore, fatty acid profile, neuropsychologic parameters (e.g., attention), subjective feeling of hunger and satiety, and satiety-associated hormones (e.g., ghrelin) are assessed. Each intervention arm will be separated by a washout period of about 14 days.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
BASIC_SCIENCE
Masking
SINGLE
Enrollment
30
Mixed meals enriched with either 25 or 50 g of canola or coconut oil
University of Bonn
Bonn, Germany
Parameters of lipid metabolism in blood I
Measurement of triglycerides (mg/dl)
Time frame: Postprandial period of 6 hours
Parameters of lipid metabolism in blood II
Measurement of total cholesterol (mg/dl)
Time frame: Postprandial period of 6 hours
Parameters of lipid metabolism in blood III
Measurement of LDL cholesterol (mg/dl)
Time frame: Postprandial period of 6 hours
Parameters of lipid metabolism in blood IV
Measurement of HDL cholesterol (mg/dl)
Time frame: Postprandial period of 6 hours
Parameters of lipid metabolism in blood VI
Measurement of free fatty acids (mmol/L)
Time frame: Postprandial period of 6 hours
Parameters of glucose metabolism in blood I
Measurement of glucose (mg/dl)
Time frame: Postprandial period of 6 hours
Parameters of glucose metabolism in blood II
Measurement of insulin (nmol/L)
Time frame: Postprandial period of 6 hours
Assessment of hunger and satiety
Assessment via visual analogue scales (e.g., 0 = not hungry at all, 10 = very hungry)
Time frame: Postprandial period of 6 hours
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Assessment of gut hormones
Measurement of gut hormones associated with hunger and satiety in blood (ghrelin in pg/ml; PYY in pg/ml)
Time frame: Postprandial period of 6 hours
Assessment of attention and memory
Assessment via validated neuropsychological questionnaires (paper-pencil)
Time frame: Postprandial period of 6 hours
Postprandial endothelial function
Assessment via the Vicorder device (e.g., measurement of pulse wave velocity in m/s)
Time frame: Postprandial period of 6 hours
Postprandial inflammation
Measurement of parameters of inflammation in blood (e.g., IL-6 in pg/ml)
Time frame: Postprandial period of 6 hours
Antioxidant system
Measurement of parameters of antioxidant system in blood (e.g., TEAC in mmol Trolox equivalents/L)
Time frame: Postprandial period of 6 hours
Fatty acid profile
Analysis of fatty acid profile in serum (e.g., alpha-linolenic acid in µmol/L)
Time frame: Postprandial period of 6 hours