The Acute Effect of Various Doses of Caffeine on Power Output and Velocity during the Bench Press Exercise among Athletes Habitually Using Caffeine
Wilk M, Filip A, Krzysztofik M, Maszczyk A, Zajac A
Nutrients · 28 citations
How it was studied
- Design
- Randomized controlled trial (indexed by PubMed)
- Studied in
- People
- Main outcome
- Health markers and function
Who paid for it
- Funding
- Independent funding
- University or hospital
- Akademia Wychowania Fizycznego im. Jerzego Kukuczki w Katowicach
Based on 1 listed funder(s) and full-text disclosure statement.
Publication
- Published
- 2019-06-27 · Nutrients · vol. 11 · issue 7 · p. 1465
- Publisher
- Multidisciplinary Digital Publishing Institute
- Cited
- 48 citations · more than 95% of similar papers · 4.7× the field average
- Impact
- Top 10% most cited in its field
- References
- 71 works
- Access
- Open access (journal) · CC-BY
- Research areas
- Coffee research and impacts · Pharmacology and Obesity Treatment · Muscle metabolism and nutrition
- Keywords
- Bench press, Caffeine, Crossover study, Athletes, Medicine, Placebo, Analysis of variance, Physical therapy, Animal science, Repeated measures design, Internal medicine, Mathematics, Resistance training, Statistics
- MeSH
- humans, caffeine, central nervous system stimulants, treatment outcome, cross-over studies, double-blind method, habits, time factors, adult, poland, male, muscle strength, resistance training, young adult, athletes
5 authors
From PL
- Michał Wilk · correspondingAkademii Wychowania Fizycznego im. Jerzego Kukuczki w Katowicach
- Aleksandra Filip-StachnikAkademii Wychowania Fizycznego im. Jerzego Kukuczki w Katowicach
- Michał KrzysztofikAkademii Wychowania Fizycznego im. Jerzego Kukuczki w Katowicach
- Adam MaszczykAkademii Wychowania Fizycznego im. Jerzego Kukuczki w Katowicach
- Adam ZającAkademii Wychowania Fizycznego im. Jerzego Kukuczki w Katowicach
Abstract
Background
Previously studies confirm ergogenic effects of caffeine (CAF); however there is no available scientific data regarding the influence of acute CAF intake on power output in athletes habitually consuming CAF. The main goal of this study was to assess the acute effect of 3, 6, 9 mg/kg/b.m. doses of CAF intake on power output and bench press bar velocity in athletes habitually consuming CAF.
Methods
The study included 15 healthy strength-trained male athletes (age = 26.8 ± 6.2 years, body mass = 82.6 ± 9.7 kg; BMI = 24.8 ± 2.7; bench press 1RM = 122.3 ± 24.5 kg). All participants were habitual caffeine consumers (5.2 ± 1.2 mg/kg/b.m.; 426 ± 102 mg of caffeine per day). This study had a randomized, crossover, double-blind study design where each participant performed four different experimental sessions, with one week interval between each trial. In every experimental session participants performed bench press, three sets of five repetitions at 50% 1RM. The power output and bar velocity assessments under four different conditions: a placebo (PLAC), and three doses of caffeine ingestion: 3 mg/kg/b.m. (CAF-3), 6 mg/kg/b.m. (CAF-6) and 9 mg/kg/b.m. (CAF-9).
Results
The statistical significance was set at p < 0.05. The repeated measures ANOVA between PLAC and CAF-3; CAF-6; CAF-9 revealed no statistically significant differences in power output and velocity of the bar during the bench press exercise. A large effect size (ES) in mean power-output was found between PLAC and CAF-9 in Sets 1 and 2. A large ES in peak power-output was found between PLAC and CAF-6 in Set 2, and between PLAC and CAF-9 in Sets 1 and 2. A large ES in peak velocity was found between PLAC and CAF-9 in Sets 1-3.
Conclusion
The results of the present study indicate that acute doses of CAF before exercise does not have a significant effect on power output and bar velocity in a group of habitual caffeine users.
Abstract via Europe PMC. Copyright remains with the authors or publisher (CC BY).
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