Trial reportJournal of the International Society of Sports Nutrition2018
Effects of a single dose of beetroot juice on cycling time trial performance at ventilatory thresholds intensity in male triathletes.
Trial report in Journal of the International Society of Sports Nutrition, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers, 6 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
22 citing papers in PubMed, 6 syntheses or guidelines pooled it, 35 citations in OpenAlex.
- Effects of Beetroot Juice on Physical Performance in Professional Athletes and Healthy Individuals: An Umbrella Review.Nutrients · 2025Pooled it
- Efficacy of dietary supplements on sports performance outcomes: a systematic review of evidence in elite athletes.Frontiers in nutrition · 2025Pooled it
- Factors that Moderate the Effect of Nitrate Ingestion on Exercise Performance in Adults: A Systematic Review with Meta-Analyses and Meta-Regressions.Advances in nutrition (Bethesda, Md.) · 2022Pooled it
- Ergogenic Effect of Nitrate Supplementation: A Systematic Review and Meta-analysis.Medicine and science in sports and exercise · 2020Pooled it
- Influence of Nitrate Supplementation on Endurance Cyclic Sports Performance: A Systematic Review.Nutrients · 2020Pooled it
- The Effects of Sports Drinks During High-Intensity Exercise on the Carbohydrate Oxidation Rate Among Athletes: A Systematic Review and Meta-Analysis.Frontiers in physiology · 2020Pooled it
- Trial
- Beetroot juice modulates physiological responses and accelerates recovery during the special judo performance: a randomized trial.Scientific reports · 2026Trial
- Effects of acute beetroot juice intake on performance, maximal oxygen uptake, and ventilatory efficiency in well-trained master rowers: a randomized, double-blinded crossover study.Journal of the International Society of Sports Nutrition · 2024Trial
- The Relationship between Resistance Exercise Performance and Ventilatory Efficiency after Beetroot Juice Intake in Well-Trained Athletes.Nutrients · 2021Trial
- Cardiorespiratory, Metabolic and Muscular Responses during a Video-Recorded Aerobic Dance Session on an Air Dissipation Platform.International journal of environmental research and public health · 2020Trial
- Understanding the effects of beetroot juice intake on CrossFit performance by assessing hormonal, metabolic and mechanical response: a randomized, double-blind, crossover design.Journal of the International Society of Sports Nutrition · 2020Trial
- Physiological- and performance-related effects of acute olive oil supplementation at moderate exercise intensity.Journal of the International Society of Sports Nutrition · 2019Trial
- Ventilatory efficiency during constant-load test at lactate threshold intensity: Endurance versus resistance exercises.PloS one · 2019Trial
- Article
- Harmony in Motion: Unraveling the Nexus of Sports, Plant-Based Nutrition, and Antioxidants for Peak Performance.Antioxidants (Basel, Switzerland) · 2024Review
- Article
- Factors Influencing Substrate Oxidation During Submaximal Cycling: A Modelling Analysis.Sports medicine (Auckland, N.Z.) · 2022Article
- Circulating nitrate-nitrite reduces oxygen uptake for improving resistance exercise performance after rest time in well-trained CrossFit athletes.Scientific reports · 2022Article
- Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
9 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundBeetroot juice (BJ) is classified as a high-level supplement for improving sports performance. There is some controversy over the benefits of BJ supplementation for endurance exercise performance, especially when referring to well-trained athletes. This study examines the effects of acute BJ supplementation on cardioventilatory responses, exercise economy/efficiency, slow component of oxygen uptake, time trial performance, blood lactate, energy consumption, and carbohydrate and fat oxidation.
methodsTwelve well-trained, male triathletes (aged 21-47 yr) were assigned in a randomized, double-blind, crossover design to receive 70 ml of BJ (6.5 mmol NO
resultsMaximal oxygen uptake was 54.78 ± 3.13 mL·min
conclusionOur findings do not support an improvement in the variables examined in response to acute BJ supplementation. Probably, higher doses are needed for improving time trial performance in male triathletes during a cycle ergometer test conducted at a load intensity equivalent to the first and second ventilatory threshold.
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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 OpenQuestion graph.