Trial reportNutrients2021
Caffeine-Induced Effects on Human Skeletal Muscle Contraction Time and Maximal Displacement Measured by Tensiomyography.
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 28 papers.
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
28 citing papers in PubMed, 35 citations in OpenAlex.
- Effects of taurine combined with caffeine on repetitive sprint exercise performance and cognition in a hypoxic environment.Scientific reports · 2025Trial
- Trial
- Review
- Coffee and Caffeine in Depression: Symptom-Level Modulation and Challenges in Nutripsychiatric Interpretation.Nutrients · 2026Review
- Coffee Versus Caffeine as Ergogenic Aids: Biological and Methodological Distinctions with Implications for Exercise Performance and Recovery.Nutrients · 2026Review
- Caffeine and human performance: from molecular mechanisms to exercise and recovery.Frontiers in physiology · 2026Review
- Prevalence of Bruxism Among Young Adult Energy Drink Consumers in Jordan.Journal of clinical medicine · 2025Article
- No Ergogenic Effect of Caffeine or Sodium Bicarbonate on Resistance Exercise Performance: A Double-Blind Crossover Study with Sex-Based Analysis.Sports (Basel, Switzerland) · 2025Article
- Article
- Body fat percentage is a key factor in elevated plasma levels of caffeine and its metabolite in women.PeerJ · 2025Article
- Muscle contraction time after caffeine intake is faster after 30 minutes than after 60 minutes.Journal of the International Society of Sports Nutrition · 2024Article
- A Comparison of Contractile Properties and Acute Muscle Fatigue Response in Adult Females with Non-Specific Chronic Low Back Pain.Bioengineering (Basel, Switzerland) · 2024Article
- The risk of premature cardiac contractions (PAC/PVC) related to caffeine consumption among healthcare workers: A comprehensive review.Health science reports · 2024Article
- Changes in hamstring contractile properties during the competitive season in young football players.PeerJ · 2024Article
- The interaction of post-activation potentiation and fatigue on skeletal muscle twitch torque and displacement.Frontiers in physiology · 2024Article
- Moderate-dose caffeine enhances anaerobic performance without altering hydration status.Frontiers in nutrition · 2024Article
- International society of sports nutrition position stand: coffee and sports performance.Journal of the International Society of Sports Nutrition · 2023Article
- Effects of Lumbar Stabilization Exercises on Isokinetic Strength and Muscle Tension in Sedentary Men.Bioengineering (Basel, Switzerland) · 2023Article
- Gender Differences in the Frequency of Positive and Negative Effects after Acute Caffeine Consumption.Nutrients · 2023Article
- Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
5 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Studies on muscle activation time in sport after caffeine supplementation confirmed the effectiveness of caffeine. The novel approach was to determine whether a dose of 9 mg/kg/ body mass (b.m.) of caffeine affects the changes of contraction time and the displacement of electrically stimulated muscle (gastrocnemius medialis) in professional athletes who regularly consume products rich in caffeine and do not comply with the caffeine discontinuation period requirements. The study included 40 professional male handball players (age = 23.13 ± 3.51, b.m. = 93.51 ± 15.70 kg, height 191 ± 7.72, BMI = 25.89 ± 3.10). The analysis showed that in the experimental group the values of examined parameters were significantly reduced (
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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.