SynthesisNutrients2021
The Effect of Beetroot Ingestion on High-Intensity Interval Training: A Systematic Review and Meta-Analysis.
Synthesis in Nutrients, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers, 8 of them syntheses that pooled it.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
20 citing papers in PubMed, 8 syntheses or guidelines pooled it, 27 citations in OpenAlex.
- Pooled it
- Beetroot Juice Supplementation as a Healthy Aging Strategy Through Improving Physical Performance and Cognitive Functions: A Systematic Review.Nutrients · 2025Pooled it
- Effects of Beetroot Juice on Physical Performance in Professional Athletes and Healthy Individuals: An Umbrella Review.Nutrients · 2025Pooled it
- Dietary Nitrate Supplementation and Exercise Performance: An Umbrella Review of 20 Published Systematic Reviews with Meta-analyses.Sports medicine (Auckland, N.Z.) · 2025Pooled it
- Acute and Chronic Performance Enhancement in Rowing: A Network Meta-analytical Approach on the Effects of Nutrition and Training.Sports medicine (Auckland, N.Z.) · 2023Pooled it
- Effects of Dietary Nitrate Supplementation on Back Squat and Bench Press Performance: A Systematic Review and Meta-Analysis.Nutrients · 2023Pooled it
- Does Beetroot Supplementation Improve Performance in Combat Sports Athletes? A Systematic Review of Randomized Controlled Trials.Nutrients · 2023Pooled it
- The Effects of Dietary Nitrate Supplementation on Explosive Exercise Performance: A Systematic Review.International journal of environmental research and public health · 2022Pooled it
- Beetroot juice modulates physiological responses and accelerates recovery during the special judo performance: a randomized trial.Scientific reports · 2026Trial
- Trial
- Article
- Beetroot Plus Vitamin C for Performance and Recovery: Protocol of a Double-Blind, Placebo-Controlled, Randomized Crossover Trial in Semi-Professional Wrestlers.Health science reports · 2026Article
- Effect of acute dietary nitrate intake on post-activation performance enhancement in male long jumpers.Frontiers in nutrition · 2026Article
- Nutritional indicators as predictive and prognosis biomarkers for neoadjuvant chemoradiotherapy outcomes in patients with locally advanced rectal cancer.Supportive care in cancer : official journal of the Multinational Association of Supportive Care in Cancer · 2025Article
- Review
- Acute beetroot juice supplementation augments early neuromuscular performance after blood flow restriction: a crossover study in elite basketball players.Frontiers in nutrition · 2025Article
- Improved Effect of Spinach Extract on Physical Performance: A Systematic Review of Randomized Controlled Trials.Cureus · 2025Review
- Root Vegetables-Composition, Health Effects, and Contaminants.International journal of environmental research and public health · 2022Review
- The effects of nitrate ingestion on high-intensity endurance time-trial performance: A systematic review and meta-analysis.Journal of exercise science and fitness · 2022Review
- Assessment of Potential Benefits of Functional Food Characteristics of Beetroot Energy Drink and Flavored Milk.BioMed research international · 2022Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
3 authors at 1 institution in 1 country.
Funding
Abstract
Dietary nitrate supplementation has shown promising ergogenic effects on endurance exercise. However, at present there is no systematic analysis evaluating the effects of acute or chronic nitrate supplementation on performance measures during high-intensity interval training (HIIT) and sprint interval training (SIT). The main aim of this systematic review and meta-analysis was to evaluate the evidence for supplementation of dietary beetroot-a common source of nitrate-to improve peak and mean power output during HIIT and SIT. A systematic literature search was carried out following PRISMA guidelines and the PICOS framework within the following databases: PubMed, ProQuest, ScienceDirect, and SPORTDiscus. Search terms used were: ((nitrate OR nitrite OR beetroot) AND (HIIT or high intensity or sprint interval or SIT) AND (performance)). A total of 17 studies were included and reviewed independently. Seven studies applied an acute supplementation strategy and ten studies applied chronic supplementation. The standardised mean difference for mean power output showed an overall trivial, non-significant effect in favour of placebo (Hedges' g = -0.05, 95% CI -0.32 to 0.21, Z = 0.39,
Indexed as
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What Socratic holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the Socratic graph.