SynthesisNutrients2021
Effect of Acute and Chronic Oral l-Carnitine Supplementation on Exercise Performance Based on the Exercise Intensity: A Systematic Review.
Synthesis in Nutrients, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 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
18 citing papers in PubMed, 2 syntheses or guidelines pooled it, 30 citations in OpenAlex.
- Nutraceuticals for the management of weight and inflammation-related complications in obesity: a pediatric perspective. Systematic review and network meta-analysis.Frontiers in nutrition · 2026Pooled it
- Ergogenic effects of supplement combinations on endurance performance: a systematic review and meta-analysis of randomized controlled trials.Journal of the International Society of Sports Nutrition · 2025Pooled it
- Acute L-Carnitine Supplementation Does Not Improve CrossFitNutrients · 2025Trial
- Trial
- Biochemical Signatures of L-Carnitine-Induced Changes in Brain Cancer Cells Revealed by Confocal Raman Imaging: A Preliminary Study.Sensors (Basel, Switzerland) · 2026Article
- Comparative Analysis of L-Carnitine and Coenzyme QNutrients · 2026Article
- Longitudinal metabolomics reveals dynamic associations of trimethylamine N-oxide and precursors with the progression of gestational diabetes.BMC pregnancy and childbirth · 2026Article
- Fluorinated Carnitine Derivatives as Tools to Visualise Carnitine Transport and Metabolism.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026Article
- Protective Effects of Betanin in Acute and Subacute Periods in Experimental Colitis Induced by Trinitrobenzene Sulfonic Acid.Nutrients · 2025Article
- Study of the L-Carnitine Effect on Myocardial Bioelectrical Activity by Microelectrode Arrays and Artificial Intelligence Application.Journal of cardiovascular translational research · 2025Article
- Clinicopathological Studies on the Impact of Grape Seed Extract and L-Carnitine as Cardioprotective Agents Against Doxorubicin-Induced Toxicity in Rats.Life (Basel, Switzerland) · 2024Article
- Revisiting the Role of Carnitine in Heart Disease Through the Lens of the Gut Microbiota.Nutrients · 2024Review
- The Effect of L-Carnitine on Critical Illnesses Such as Traumatic Brain Injury (TBI), Acute Kidney Injury (AKI), and Hyperammonemia (HA).Metabolites · 2024Review
- Effects of 5-ion 6-beam sequential irradiation in the presence and absence of hindlimb or control hindlimb unloading on behavioral performances and plasma metabolic pathways of Fischer 344 rats.Frontiers in physiology · 2024Article
- Implications of Dietary Guidance for Sport and Exercise.Nutrients · 2023Article
- A Carnitine-Containing Product Improves Aspects of Post-Exercise Recovery in Adult Horses.Animals : an open access journal from MDPI · 2023Article
- A randomized clinical trial to evaluate the efficacy of L-carnitine L-tartrate to modulate the effects of SARS-CoV-2 infection.Frontiers in nutrition · 2023Article
- Effects of L-carnitine on healing of Achilles tendon in rats.Joint diseases and related surgery · 2023Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
6 authors at 4 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
l-Carnitine (l-C) and any of its forms (glycine-propionyl l-Carnitine (GPL-C) or l-Carnitine l-tartrate (l-CLT)) has been frequently recommended as a supplement to improve sports performance due to, among others, its role in fat metabolism and in maintaining the mitochondrial acetyl-CoA/CoA ratio. The main aim of the present systematic review was to determine the effects of oral l-C supplementation on moderate- (50-79% V˙O
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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.