ArticleSports (Basel, Switzerland)2017
Red Spinach Extract Increases Ventilatory Threshold during Graded Exercise Testing.
Article in Sports (Basel, Switzerland), 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers, 3 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
12 citing papers in PubMed, 3 syntheses or guidelines pooled it.
- The effects of exercise training and nutritional supplementation on taekwondo performance: a systematic review and meta-analysis.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
- Effect of food sources of nitrate, polyphenols, L-arginine and L-citrulline on endurance exercise performance: a systematic review and meta-analysis of randomised controlled trials.Journal of the International Society of Sports Nutrition · 2021Pooled it
- Investigation of the effect of nitrate and L-arginine intake on aerobic, anaerobic performance, balance, agility, and recovery in elite taekwondo athletes.Journal of the International Society of Sports Nutrition · 2025Trial
- Trial
- The influence of amaranth (Amaranthus hypochondriacus) dietary nitrates on the aerobic capacity of physically active young persons.Journal of the International Society of Sports Nutrition · 2020Trial
- Effects of Acute Red Spinach Powder (VitaSpinachMuscles (Basel, Switzerland) · 2025Article
- Improved Effect of Spinach Extract on Physical Performance: A Systematic Review of Randomized Controlled Trials.Cureus · 2025Review
- Exploring the Impact of Alternative Sources of Dietary Nitrate Supplementation on Exercise Performance.International journal of molecular sciences · 2024Review
- Nitric Oxide in the Field: Prevalence and Use of Nitrates by Dietitians and Nutritionists in Spanish Elite Soccer.Nutrients · 2023Article
- Impact of Red Spinach Extract Supplementation on Bench Press Performance, Muscle Oxygenation, and Cognitive Function in Resistance-Trained Males.Sports (Basel, Switzerland) · 2021Article
- Acute Ingestion of A Novel Nitrate-Rich Dietary Supplement Significantly Increases Plasma Nitrate/Nitrite in Physically Active Men and Women.Nutrients · 2020Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
8 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
PubMed holds no abstract for this paper.
Indexed as
Identifiers
What OpenQuestion 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 OpenQuestion graph.