Evidence from previous studies supports a strong relationship between fruit and vegetable consumption and reduced cardiac risk. This could be mediated via improvements on blood pressure, platelet function and vascular reactivity. Certain vitamins and polyphenols found in fruits and vegetables, have antioxidant and anti-inflammatory effects and play a major role on the function of immune cells. Previous studies have also demonstrated the importance of omega-3 fatty acids on humans' health and their positive effects on the cardiovascular system and blood lipids regulation, as well as their involvement on inflammatory response. Nutritional regimens with adequate intake of micronutrients, fruit and vegetables, omega-3 fatty acids, low in sugar and saturated fats, such as the Mediterranean diet or vegetarian diets, can reduce chronic inflammation and oxidative stress and improve cardiovascular risk profile. Considering that the population's fruit and vegetable and omega-3 intakes are below recommendations, whole food-based supplements could provide an accessible form of supplementation to bridge the gap between actual and recommended intakes. This study is aiming to assess whether long-term separate ingestions of an encapsulated juice powder concentrate and a plant-based omega fatty acid supplement, or a combined ingestion of the two, can affect biomarkers of cardiovascular health, low-grade inflammation and indicators of biological aging in older adults.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
PREVENTION
Masking
NONE
Enrollment
80
Encapsulated juice powder concentrate derived from 36 dried fruits, vegetables and berries.
Encapsulated plant-based fatty acid supplement.
Green Beat
Graz, Austria
Otto Loewi Research Center, Section of Physiological Chemistry, Medical University of Graz
Graz, Austria
Lipid profile markers
Total cholesterol, HDL, LDL, ApoA1, triglycerides, Omega-3-Index
Time frame: 12 months
Hemostasis markers
Platelet aggregation, thrombelastometry, coagulation (Quick, PT, PTT)
Time frame: 12 months
Oxidative stress markers
oxLDL, MDA, carbonyl proteins, (CP), redox state of albumin, homocysteine
Time frame: 12 months
Glucose metabolism
Glucose, insulin, HOMA-IR, HbA1c
Time frame: 12 months
Concentration changes in cytokines/ cytokine receptors
TNF-α, sTNFR1 and sTNFR2, CCL5 = RANTES, IL-1β, hsCRP, CCL2 = MCP-1, Osteoprotegerin (OPG), IL-5, IL-8
Time frame: 12 months
Vitamin K metabolism
Osteocalcin, matrix Gla protein (MGP), vitamins K1 and K2 (MK-7)
Time frame: 12 months
mitochondrial DNA copy number (mtDNA-CN)
mitochondrial DNA will be amplified and the ratio to genomic DNA will be calculated
Time frame: 12 months
Upper respiratory tract symptoms
The number of symptoms experienced and severity of symptoms will be assessed by the Wisconsin upper respiratory symptoms survey (WURSS).
Time frame: 12 months
Quality of life Questionnaire
Assessed through the Short Form Survey (SF-36), which consists of 8 scales, namely: physical functioning, physical role functioning, bodily pain, general health, vitality, social functioning, emotional role functioning, mental health. All items are scored on a scale from 0 to 100 and higher scores denote a more favourable health state.
Time frame: 12 months
Cognitive function
Cognitive function will be assessed by the CFD-index, which takes into account the following 5 dimensions: Attention (alertness, shared attention, processing speed), Verbal long-term memory, Executive functions (spatial working-memory, cognitive flexibility), Expressive language (word-fluency, object designation), Perceptual-motoric functions (visuoconstruction).
Time frame: 12 months
Neurotrophins
BDNF and NGF will be measured by ELISA
Time frame: 12 months
This platform is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional.