NCT04763291

Brief Summary

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.

Trial Health

75
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
80

participants targeted

Target at P50-P75 for not_applicable

Timeline
7mo left

Started Sep 2021

Longer than P75 for not_applicable

Geographic Reach
1 country

2 active sites

Status
active not recruiting

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Progress89%
Sep 2021Dec 2026

First Submitted

Initial submission to the registry

February 2, 2021

Completed
19 days until next milestone

First Posted

Study publicly available on registry

February 21, 2021

Completed
6 months until next milestone

Study Start

First participant enrolled

September 1, 2021

Completed
4.7 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

May 1, 2026

Completed
7 months until next milestone

Study Completion

Last participant's last visit for all outcomes

December 1, 2026

Expected
Last Updated

July 1, 2025

Status Verified

June 1, 2025

Enrollment Period

4.7 years

First QC Date

February 2, 2021

Last Update Submit

June 30, 2025

Conditions

Keywords

AgingCVD preventionLow-grade inflammation

Outcome Measures

Primary Outcomes (5)

  • Lipid profile markers

    Total cholesterol, HDL, LDL, ApoA1, triglycerides, Omega-3-Index

    12 months

  • Hemostasis markers

    Platelet aggregation, thrombelastometry, coagulation (Quick, PT, PTT)

    12 months

  • Oxidative stress markers

    oxLDL, MDA, carbonyl proteins, (CP), redox state of albumin, homocysteine

    12 months

  • Glucose metabolism

    Glucose, insulin, HOMA-IR, HbA1c

    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

    12 months

Secondary Outcomes (6)

  • Vitamin K metabolism

    12 months

  • mitochondrial DNA copy number (mtDNA-CN)

    12 months

  • Upper respiratory tract symptoms

    12 months

  • Quality of life Questionnaire

    12 months

  • Cognitive function

    12 months

  • +1 more secondary outcomes

Other Outcomes (2)

  • Plasma concentrations of vitamins and carotenoids

    12 months

  • Plasma concentrations of fatty acids

    12 months

Study Arms (4)

Control group

NO INTERVENTION

Continue habitual diet and lifestyle.

Fruit, Vegetable and Berry (FVB) group

EXPERIMENTAL

Participants have to ingest an encapsulated juice powder concentrate, otherwise continue their habitual diet and lifestyle.

Dietary Supplement: Juice Plus+ Fruit, Vegetable and Berry blends

Omega group

EXPERIMENTAL

Participants have to ingest a plant-based fatty acid supplement, otherwise continue their habitual diet and lifestyle.

Dietary Supplement: Juice Plus+ Omega blend

Fruit, Vegetable, Berry and Omega (FVBO) group

EXPERIMENTAL

Participants have to ingest an encapsulated juice powder concentrate along with a plant-based fatty acid supplement, otherwise continue their habitual diet and lifestyle.

Dietary Supplement: Juice Plus+ Fruit, Vegetable and Berry blendsDietary Supplement: Juice Plus+ Omega blend

Interventions

Encapsulated juice powder concentrate derived from 36 dried fruits, vegetables and berries.

Fruit, Vegetable and Berry (FVB) groupFruit, Vegetable, Berry and Omega (FVBO) group
Juice Plus+ Omega blendDIETARY_SUPPLEMENT

Encapsulated plant-based fatty acid supplement.

Fruit, Vegetable, Berry and Omega (FVBO) groupOmega group

Eligibility Criteria

Age55 Years - 80 Years
Sexall
Healthy VolunteersYes
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Post menopausal
  • Non-smokers
  • BMI 18.5 to 40 kg/m2
  • Vegetable intake ≤ 2 servings/ day
  • Intake of fruits ≤ 2 servings /day
  • Adherence to a 6-week washout period for dietary supplements not ingested for specific medical conditions.

You may not qualify if:

  • Age \<55 and \>80 years
  • Smokers (or ex-smokers who quit smoking less than 3 years ago)
  • Aversion to stop the intake of multivitamins, multiminerals or omega fatty acid supplements
  • Subjects with histamine intolerance
  • Hypertension, starting with grade 2 according to the classification of the European Society of Hypertension: systolic blood pressure \> 160mmHg, diastolic blood pressure \>100 mmHg
  • All medication taken for less than 3 months or with changes on the dosage over the last 3 months and medication for any of the conditions listed below.
  • Clinically relevant infectious diseases
  • Diabetes mellitus type I and type II
  • Rheumatic diseases
  • Auto-immune diseases
  • Any stents and coronary artery diseases (CAD)
  • Cancer patients
  • Pregnancy
  • Significant lifestyle changes, e.g. changes in diet or physical activity profile

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (2)

Green Beat

Graz, 8042, Austria

Location

Otto Loewi Research Center, Section of Physiological Chemistry, Medical University of Graz

Graz, Austria

Location

Related Publications (1)

  • Tsiountsioura M, Cvirn G, Meixner-Goetz L, Ziegler T, Lamprecht M. Effects of long-term consumption of two plant-based dietary supplements on cardiovascular health and low-grade inflammation in middle-aged and elderly people: study protocol for a randomised, controlled trial. J Health Popul Nutr. 2023 Sep 19;42(1):100. doi: 10.1186/s41043-023-00434-x.

MeSH Terms

Conditions

Cardiovascular DiseasesOverweightObesity

Interventions

Vegetables

Condition Hierarchy (Ancestors)

OvernutritionNutrition DisordersNutritional and Metabolic DiseasesBody WeightSigns and SymptomsPathological Conditions, Signs and Symptoms

Intervention Hierarchy (Ancestors)

FoodDiet, Food, and NutritionPhysiological PhenomenaFood and Beverages

Study Officials

  • Manfred Lamprecht, PhD

    Green Beat

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
NONE
Purpose
PREVENTION
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Principal Investigator

Study Record Dates

First Submitted

February 2, 2021

First Posted

February 21, 2021

Study Start

September 1, 2021

Primary Completion

May 1, 2026

Study Completion (Estimated)

December 1, 2026

Last Updated

July 1, 2025

Record last verified: 2025-06

Data Sharing

IPD Sharing
Will not share

Locations