Efeitos ergogênicos da cafeína sobre o desempenho de desportistas praticantes de musculação
Year: 2026
Type: article
Study designs: Randomized Controlled Trial, Clinical Trial
Abstract: Caffeine is widely consumed by resistance training practitioners, particularly when ingested prior to exercise. Its use is associated with its recognized ergogenic potential in the sports context, being employed as a strategy to enhance readiness, alertness, and training intensity during strength training sessions. Objective: This study aimed to investigate the ergogenic effects of caffeine on muscular strength performance, assessed through the one-repetition maximum (1RM) test in four resistance exercises: barbell curl, cable triceps pushdown, leg press, and knee extension. Materials and Methods: A randomized, double-blind, placebo-controlled crossover design was adopted, involving 11 participants. The volunteers performed 1RM tests on two separate occasions, receiving either caffeine (6 mg/kg) or placebo in a randomized order. Data were analyzed using paired statistical tests (paired t-test or Wilcoxon signed-rank test, according to data distribution), with a significance level set at p < 0.05. Results: No statistically significant differences were observed between the caffeine and placebo conditions in muscular strength performance across the exercises evaluated, suggesting that the ergogenic effects of caffeine may vary according to exercise type and individual characteristics. Conclusion: Future studies with larger sample sizes, greater control of individual variables, and the inclusion of genetic analyses are necessary to clarify the underlying mechanisms and to identify responder profiles to caffeine supplementation in strength training.
Institution: Uningá - Centro Universitário Ingá
Language: Portuguese
Topic: Coffee research and impacts
Subfield: Pharmacology (medical)
Field: Medicine
Domain: Health Sciences
Open Access status: diamond
OpenAlex ID: W7204676193