ArticleSports (Basel, Switzerland)2021
Impact of Red Spinach Extract Supplementation on Bench Press Performance, Muscle Oxygenation, and Cognitive Function in Resistance-Trained Males.
Article in Sports (Basel, Switzerland), 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers, 2 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
14 citing papers in PubMed, 2 syntheses or guidelines pooled it, 20 citations in OpenAlex.
- Beetroot Juice Supplementation as a Healthy Aging Strategy Through Improving Physical Performance and Cognitive Functions: A Systematic Review.Nutrients · 2025Pooled it
- Muscle Oximetry in Sports Science: An Updated Systematic Review.Sports medicine (Auckland, N.Z.) · 2024Pooled it
- Acute effects of a chewable beetroot-based supplement on cognitive performance: a double-blind randomized placebo-controlled crossover clinical trial.European journal of nutrition · 2024Trial
- Effect of watermelon supplementation on exercise performance, muscle oxygenation, and vessel diameter in resistance-trained men.European journal of applied physiology · 2022Trial
- Advances in polyphenol-based strategies for musculoskeletal recovery and exercise rehabilitation in cancer: Mechanistic insights into Wnt/β-catenin and PI3K/Akt signaling pathways and inflammatory markers.Frontiers in oncology · 2026Review
- Effects of Acute Red Spinach Powder (VitaSpinachMuscles (Basel, Switzerland) · 2025Article
- The Effect of one-week spinach and NBS superfood supplementation on interleukin-6, superoxide dismutase, and malondialdehyde levels after repeated bouts of wingate test in trained men.Nutrition & metabolism · 2025Article
- Improved Effect of Spinach Extract on Physical Performance: A Systematic Review of Randomized Controlled Trials.Cureus · 2025Review
- Muscle Oxygen Saturation Dynamics During Upper-Body Resistance Exercise.Sensors (Basel, Switzerland) · 2024Article
- Exploring the Impact of Alternative Sources of Dietary Nitrate Supplementation on Exercise Performance.International journal of molecular sciences · 2024Review
- Maximal Number of Repetitions at Percentages of the One Repetition Maximum: A Meta-Regression and Moderator Analysis of Sex, Age, Training Status, and Exercise.Sports medicine (Auckland, N.Z.) · 2024Review
- Nitric Oxide in the Field: Prevalence and Use of Nitrates by Dietitians and Nutritionists in Spanish Elite Soccer.Nutrients · 2023Article
- Acute Effect of L-Citrulline Supplementation on Resistance Exercise Performance and Muscle Oxygenation in Recreationally Resistance Trained Men and Women.Journal of functional morphology and kinesiology · 2023Article
- Supplementation with Nitric Oxide Precursors for Strength Performance: A Review of the Current Literature.Nutrients · 2023Review
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 at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The purpose of this study was to assess the impact of short-term dietary nitrate supplementation, in the form of red spinach extract (RSE), on bench press performance, muscle oxygenation, and cognitive function in resistance-trained males. Ten resistance-trained males participated in this randomized, cross-over, placebo-controlled, double-blind investigation. Each participant completed 7 days of either RSE (2 g; 180 mg NO
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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.