Effect of a Vegan Diet Versus a Mediterranean Diet. Assessing Health Outcomes
NCT ID: NCT06008886
Last Updated: 2023-11-28
Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
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COMPLETED
NA
14 participants
INTERVENTIONAL
2023-06-19
2023-09-04
Brief Summary
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Detailed Description
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Both the mediterranean diet and vegan diets prescribed to the participants were isocaloric, with similar distributions of macronutrients. The primary difference between the two interventions was the source of food: the vegan diet exclusively comprised plant-based foods, while the omnivorous diet included foods of both animal and plant sources. In the case of the omnivorous diet, 60% of the total protein intake was derived from animal sources (mainly from fish, white meat, low-fat dairy and eggs).
As part of the vegan diet, participants were instructed to take 1000 µg of cyanocobalamin (a form of vitamin B12) twice a week from Harrison Sport Nutrition, Granada, Spain. This supplementation aimed to ensure adequate vitamin B12 intake, which is essential for individuals following a vegan diet.
Throughout the study period, participants were advised to maintain their initial physical exercise frequency and volume to maintain consistency and avoid confounding variables. To ensure standardized measurements, all tests were conducted in the same laboratory, employing identical testing devices, and supervised by the same group of researchers. This approach aimed to minimize experimental variability and improve the reliability of the study's results.
Conditions
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Study Design
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NON_RANDOMIZED
CROSSOVER
PREVENTION
NONE
Study Groups
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Vegan diet
Vegan diet all foods included were of plant sources. During the vegan diet, the participants took 1000 µg of cyanocobalamin twice a week (Harrison Sport Nutrition, Granada, Spain)
Vegan diet
Normocaloric diet based solely on foods of plant sources.
Mediterranean diet
In the case of the mediterranean diet, foods of animal sources were also included (animal protein accounted for 60% of total protein intake). In this diet there was a predominance of plant foods; moderate to low consumption of fish, white meat, low-fat dairy and eggs; and very low consumption of red and processed meats, butter, full-fat dairy and sweets.
Mediterranean diet
Diet with a predominance of plant foods fruits, vegetables, whole grains, nuts and legumes); moderate to low consumption of fish, white meat, low-fat dairy and eggs; and very low consumption of red and processed meats, butter, full-fat dairy and sweets.
Interventions
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Vegan diet
Normocaloric diet based solely on foods of plant sources.
Mediterranean diet
Diet with a predominance of plant foods fruits, vegetables, whole grains, nuts and legumes); moderate to low consumption of fish, white meat, low-fat dairy and eggs; and very low consumption of red and processed meats, butter, full-fat dairy and sweets.
Eligibility Criteria
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Inclusion Criteria
* Aged between 18-40 years.
* Physically active according to the recommendations of the World Health Organization (WHO).
* Body Mass Index (BMI) between 18.5-24.9 kg/m2.
* No tobacco use.
* No or low alcohol consumption and no orthopedic limitations that would interfere with the performance of the study tests.
Exclusion Criteria
* Musculoskeletal disease within the last six months.
18 Years
40 Years
MALE
Yes
Sponsors
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Universidad Francisco de Vitoria
OTHER
Responsible Party
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Miguel López Moreno
Principal Investigator
Principal Investigators
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Miguel López Moreno, Phd
Role: PRINCIPAL_INVESTIGATOR
Universidad Francisco de Vitoria
Locations
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Francisco de Vitoria University
Madrid, , Spain
Countries
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References
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Lopez-Moreno M, Fresan U, Del Coso J, Munoz A, Aguilar-Navarro M, Iglesias-Lopez MT, Amaro-Gahete FJ, Gutierrez-Hellin J. The OMNIVEG Study: Effects of Transitioning from a Traditional to a Vegan Mediterranean Diet on Fat Oxidation During Exercise. Nutrients. 2025 Jul 9;17(14):2274. doi: 10.3390/nu17142274.
Lopez-Moreno M, Fresan U, Del Coso J, Aguilar-Navarro M, Iglesias Lopez MT, Pena-Fernandez J, Munoz A, Gutierrez-Hellin J. The OMNIVEG STUDY: Health outcomes of shifting from a traditional to a vegan Mediterranean diet in healthy men. A controlled crossover trial. Nutr Metab Cardiovasc Dis. 2024 Dec;34(12):2680-2689. doi: 10.1016/j.numecd.2024.08.008. Epub 2024 Aug 23.
Other Identifiers
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20/2023
Identifier Type: -
Identifier Source: org_study_id