Trial reportNutrients2019
Coffee Ingestion Improves 5 km Cycling Performance in Men and Women by a Similar Magnitude.
Trial report in Nutrients, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 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
16 citing papers in PubMed, 2 syntheses or guidelines pooled it, 29 citations in OpenAlex.
- Acute caffeine ingestion and exercise performance in women: a systematic review and meta-analysis of menstrual-cycle phase and hormonal contraceptive status.Frontiers in nutrition · 2026Pooled it
- Acute caffeine supplementation and cycling time-trial performance across different task durations: a systematic review and meta-analysis.Frontiers in physiology · 2026Pooled it
- The Acute Effects of Caffeine Supplementation on Anaerobic Performance and Functional Strength in Female Soccer Players.Nutrients · 2025Trial
- Caffeine Improves Sprint Time in Simulated Freestyle Swimming Competition but Not the Vertical Jump in Female Swimmers.Nutrients · 2024Trial
- Effects of Caffeinated Coffee on Cross-Country Cycling Performance in Recreational Cyclists.Nutrients · 2024Trial
- Acute Effects of Coffee Consumption on Health among Ambulatory Adults.The New England journal of medicine · 2023Trial
- Preliminary Research towards Acute Effects of Different Doses of Caffeine on Strength-Power Performance in Highly Trained Judo Athletes.International journal of environmental research and public health · 2022Trial
- Similar ergogenic effect of caffeine on anaerobic performance in men and women athletes.European journal of nutrition · 2021Trial
- The effects of different doses of caffeine on maximal strength and strength-endurance in women habituated to caffeine.Journal of the International Society of Sports Nutrition · 2021Trial
- Trial
- Extrapolating the Coffee and Caffeine (1,3,7-Trimethylxanthine) Effects on Exercise and Metabolism-A Concise Review.Nutrients · 2023Review
- International society of sports nutrition position stand: coffee and sports performance.Journal of the International Society of Sports Nutrition · 2023Article
- Low and Moderate Doses of Caffeinated Coffee Improve Repeated Sprint Performance in Female Team Sport Athletes.Biology · 2022Article
- Does caffeine ingestion affect the lower-body post-activation performance enhancement in female volleyball players?BMC sports science, medicine & rehabilitation · 2022Article
- Carbohydrate supplementation: a critical review of recent innovations.European journal of applied physiology · 2021Review
- Effects ofGenes · 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
3 authors at 1 institution in 1 country.
Funding
Abstract
Caffeine is a well-established ergogenic aid, although research to date has predominantly focused on anhydrous caffeine, and in men. The primary aim of the present study was to investigate the effect of coffee ingestion on 5 km cycling time trial performance, and to establish whether sex differences exist. A total of 38 participants (19 men and 19 women) completed a 5 km time trial following the ingestion of 0.09 g·kg
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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.