Trial reportNutrients2021
Caffeine Doses of 3 mg/kg Increase Unilateral and Bilateral Vertical Jump Outcomes in Elite Traditional Jiu-Jitsu Athletes.
Trial report in Nutrients, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers, 3 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
12 citing papers in PubMed, 3 syntheses or guidelines pooled it, 18 citations in OpenAlex.
- Efficacy of dietary supplements on sports performance outcomes: a systematic review of evidence in elite athletes.Frontiers in nutrition · 2025Pooled it
- Pooled it
- Pooled it
- Caffeine's influence on vertical jump height: a real-life collegiate student-athlete approach.Journal of the International Society of Sports Nutrition · 2025Trial
- Performance-enhancing effects of caffeine and L-Theanine among Iranian elite wrestlers: a focus on cognitive and specific physical performance.Journal of the International Society of Sports Nutrition · 2025Trial
- The Acute Effects of Caffeine Supplementation on Anaerobic Performance and Functional Strength in Female Soccer Players.Nutrients · 2025Trial
- Are caffeine effects equivalent between different modes of administration: the acute effects of 3 mg.kgJournal of the International Society of Sports Nutrition · 2024Trial
- Trial
- Trial
- Acute caffeine strategies for improving performance in combat sports: a structured narrative review.Frontiers in physiology · 2026Review
- Low-Dose Caffeine Supplementation Is a Valuable Strategy for Increasing Time to Exhaustion, Explosive Power, and Reducing Muscle Soreness in Professional Male Kickboxers.Current developments in nutrition · 2025Article
- Identifying Consistent Metrics from the Force-Time Curve of the Countermovement Jump in Combat Fighters and Physically Active Men.International journal of exercise science · 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
7 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Caffeine increases vertical jump, although its effects on kinetics and kinematics during different phases of bilateral and unilateral jumps remain unclear. The aim of this study was to identify the effects of 3 mg/kg on kinetic, kinematic and temporal variables in the concentric and eccentric phases of bilateral and unilateral countermovement jumps. A total of 16 Spanish national team traditional Jiu-Jitsu athletes took part in two experimental trials (3 mg/kg caffeine or placebo) in a randomized, double-blind crossover study. Sixty minutes after ingestion, bilateral and unilateral jumps were performed on a force platform. Compared to the placebo, caffeine increased bilateral jump height (
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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.