The influence of amaranth (Amaranthus hypochondriacus) dietary nitrates on the aerobic capacity of physically active young persons
Liubertas T, Kairaitis R, Stasiule L, Capkauskiene S, Stasiulis A, Viskelis P, Viškelis J, Urbonaviciene D
Journal of the International Society of Sports Nutrition · 11 citations
Review labels
Neutral facts our review recorded about how this study was done. They describe method, never whether we like the result.
How it was studied
- Design
- Randomized controlled trial (indexed by PubMed)
- Studied in
- People
- Main outcome
- Health markers and function
- Intake measured by
- Not stated
Who paid for it
- Funding
- Funding not disclosed
Publication
- Published
- 2020-01-03 · J Int Soc Sports Nutr · vol. 17 · issue 1 · p. 37
- Publisher
- Springer Science+Business Media
- Cited
- 26 citations · more than 84% of similar papers · 1.8× the field average
- References
- 29 works
- Access
- Open access (journal) · CC-BY
- Research areas
- Seed and Plant Biochemistry · Medicinal Plant Extracts Effects · Nuts composition and effects
- Keywords
- Amaranth, Medicine, Amaranthus hypochondriacus, Animal science, Placebo, Aerobic capacity, Clinical nutrition, Randomized controlled trial, Food science, Exhaled nitric oxide, Oxygen radical absorbance capacity, Antioxidant capacity, Physical therapy, Internal medicine, Biology, Spirometry, Oxidative stress
- MeSH
- humans, amaranthus, nitrates, double-blind method, oxygen consumption, physical endurance, dietary supplements, male, young adult
8 authors
From LT
- Tomas Liubertas · correspondingLithuanian Sports University
- Ramutis KairaitisLithuanian Sports University
- Loreta StasiulėLithuanian Sports University
- Sandrija ČapkauskienėLithuanian Sports University
- Arvydas StasiulisLithuanian Sports University
- Pranas ViškelisLithuanian Research Centre for Agriculture and Forestry
Abstract
Background
Recent evidence indicates that elevating plasma nitrites through dietary nitrates (NO3-) supplementation is associated with enhanced muscle efficiency, fatigue resistance and performance. Beetroot (in various forms) is the dominant source of dietary NO3- primarily due to its vast availability and the simple form of preparation suitable for final consumption. After a few years of research and experimentation, our scientific team identified alternative source rich with dietary NO3- as possible nitric oxide precursor, amaranth (Amaranthus hypochondriacus) with a standardized concentration 9-11% of NO3-. This study aimed to evaluate the effect of single-dose (±400 mg of dietary NO3-) and long-term (6 days) supplementation of amaranth concentrate derived dietary NO3- on aerobic capacity in physically active young people.
Methods
We conducted a randomized, double-blind, placebo-controlled human study. Thirteen healthy and physically active young male participants were randomized into experimental and placebo groups. The aerobic capacity was tested during increasing cycling exercise (ICE) with pulmonary gas exchange recording and analysis.
Results
The peak power of the ICE, the maximum oxygen consumption and the first ventilatory threshold were significantly increased after long-term consumption of dietary amaranth (from 4.44 ± 0.50 to 4.55 ± 0.43 W/kg; from 37.7 ± 2.7 to 41.2 ± 5.4 mL/kg/min and from 178.6 ± 30.3 to 188.6 ± 35.2 W, p < 0.05; respectively) in experimental group.
Conclusions
Long-term (6 days) use of dietary NO3- from amaranth may improve the aerobic capacity during ICE in young physically active male persons. It can be recommended as the nutritional supplement during last week of preparation for competition in endurance events.
Abstract via Europe PMC. Copyright remains with the authors or publisher (CC BY).
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