ArticleNutrients2018
Are There Non-Responders to the Ergogenic Effects of Caffeine Ingestion on Exercise Performance?
Article in Nutrients, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 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
15 citing papers in PubMed, 2 syntheses or guidelines pooled it, 21 citations in OpenAlex.
- 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
- The Effects of Caffeine Ingestion on Measures of Rowing Performance: A Systematic Review and Meta-Analysis.Nutrients · 2020Pooled it
- Ergogenic effects of caffeine on peak aerobic cycling power during the menstrual cycle.European journal of nutrition · 2020Trial
- Trial
- Caffeinated Gel Ingestion Enhances Jump Performance, Muscle Strength, and Power in Trained Men.Nutrients · 2019Trial
- Challenging the Myth of Non-Response to the Ergogenic Effects of Caffeine Ingestion on Exercise Performance.Nutrients · 2019Trial
- Common questions and misconceptions about caffeine supplementation: what does the scientific evidence really show?Journal of the International Society of Sports Nutrition · 2024Review
- Unveiling Bias: Examining the Influence of Positive Results on Ergogenic Aids in Published Sports Science Studies.Sports medicine international open · 2024Article
- Cardiorespiratory, Metabolic, and Performance Changes from the Effects of Creatine and Caffeine Supplementations in Glucose-Electrolyte-Based Sports Drinks: A Double-Blind, Placebo-Controlled Study.Sports (Basel, Switzerland) · 2022Article
- Brief Version of Caffeine Expectancy Questionnaire in Brazil.Frontiers in nutrition · 2021Article
- Review
- Caffeine and Exercise Performance: Possible Directions for Definitive Findings.Frontiers in sports and active living · 2020Review
- Caffeine Supplementation for Powerlifting Competitions: An Evidence-Based Approach.Journal of human kinetics · 2019Article
- The Impact of Caffeine and Coffee on Human Health.Nutrients · 2019Article
- Response to "Are There Non-Responders to the Ergogenic 3 Effects of Caffeine Ingestion on Exercise Performance?"Nutrients · 2018Article
Corrections and comments
- Commented on by
- Comment on
Authors and funding
1 author at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
I have read with interest the recent review paper by Southward and colleagues [...].
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.