Trial reportEuropean journal of nutrition2022
Acute effects of two caffeine doses on bar velocity during the bench press exercise among women habituated to caffeine: a randomized, crossover, double-blind study involving control and placebo conditions.
Trial report in European journal of nutrition, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers, 5 of them syntheses that pooled it.
What it found
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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, 5 syntheses or guidelines pooled it, 17 citations in OpenAlex.
- Acute caffeine supplementation and resistance exercise performance in female participants: a systematic review and three-level meta-analysis.Frontiers in physiology · 2026Pooled it
- Effects of acute caffeine intake on muscular power during resistance exercise: a systematic review and meta-analysis.Frontiers in nutrition · 2025Pooled it
- Effects of Acute Ingestion of Caffeine Capsules on Muscle Strength and Muscle Endurance: A Systematic Review and Meta-Analysis.Nutrients · 2024Pooled it
- Ergogenic Aids to Improve Physical Performance in Female Athletes: A Systematic Review with Meta-Analysis.Nutrients · 2022Pooled it
- Ergogenic Effects of Caffeine on Ballistic (Throwing) Performance: A Meta-Analytical Review.Nutrients · 2022Pooled it
- Trial
- Caffeinated chewing gum produces comparable strength and power gains to capsules with fewer side effects in resistance-trained men.Journal of the International Society of Sports Nutrition · 2025Trial
- Effects of an Acute High Dose of Caffeine on Physiological Responses and Performance During a Strength-Focused CrossFitNutrients · 2025Trial
- Trial
- 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
- Differential Time-of-Day Effects of Caffeine Capsule and Mouth Rinse on Cognitive Performance in Adolescent Male Volleyball Athletes: A Randomized Crossover Investigation.Life (Basel, Switzerland) · 2025Article
- International society of sports nutrition position stand: nutritional concerns of the female athlete.Journal of the International Society of Sports Nutrition · 2023Review
- Effect of 3 and 6 mg/kg of caffeine on fat oxidation during exercise in healthy active females.Biology of sport · 2023Article
- Synergistic Effect ofNutrients · 2023Article
- Acute Effects of Caffeinated Chewing Gum on Volleyball Performance in High-Performance Female Players.Journal of human kinetics · 2022Article
Corrections and comments
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Authors and funding
4 authors at 2 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeThe main goal of this study was to evaluate the effectiveness of two different doses of caffeine (3 and 6 mg/kg) to enhance bar velocity during the bench press in women habituated to caffeine.
methodsTwelve recreationally trained women (age: 23.3 ± 0.8 years, body mass: 60.7 ± 5.7 kg, bench press one-repetition maximum (1RM): 44.3 ± 7.8 kg, daily caffeine ingestion: 5.7 ± 2.0 mg/kg/day) participated in a randomized double-blind experimental design. Each participant performed four different experimental sessions: after no supplementation (control, CON), after ingesting 3 and 6 mg/kg of caffeine (CAF-3 and CAF-6, respectively), or after ingesting a placebo (PLAC). In each experimental session, the participants performed 3 sets of 3 repetitions of the bench press exercise at 50% 1RM.
resultsA two-way repeated-measures ANOVA with subsequent post hoc analyses indicated significant increases in peak velocity (p < 0.01; ES = 0.91) and mean velocity (p < 0.01; ES = 0.78) after the intake of CAF-6 compared to CON. The study did not show significant differences in bar velocity between CAF-6 and PLAC and between CAF-3 and PLAC. No significant differences in bar velocity were observed between CAF-3 and CAF-6 conditions.
conclusionThese results suggest that 6 mg/kg of caffeine can be an effective dose to improve power-specific training outcomes in women habituated to caffeine. However, the ergogenic effect of 6 mg/kg of caffeine may be derived from a combination of biological effects and expectancy, as this dose was only superior to the control condition with no differences over the placebo.
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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.