The Effects of 3 Different Doses of Caffeine on Jumping and Throwing Performance: A Randomized, Double-Blind, Crossover Study
Sabol F, Grgic J, Mikulic P
International journal of sports physiology and performance · 41 citations
Review labels
Neutral facts our review recorded about how this study was done. They describe method, never whether we like the result.
How it was studied
- Design
- Randomized controlled trial (classified by our AI screen)
- Studied in
- People
- Main outcome
- Health markers and function
Who paid for it
- Funding
- Funding not disclosed
Publication
- Published
- 2019-01-31 · Int J Sports Physiol Perform · vol. 14 · issue 9 · pp. 1170–1177
- Publisher
- Human Kinetics
- Cited
- 64 citations · more than 98% of similar papers · 7.8× the field average
- Impact
- Top 10% most cited in its field
- References
- 27 works
- Access
- Paywalled
- Research areas
- Coffee research and impacts · Muscle metabolism and nutrition · Pharmacology and Obesity Treatment
- Keywords
- Caffeine, Placebo, Analysis of variance, Crossover study, Jumping, Repeated measures design, Medicine, Ingestion, Post-hoc analysis, Animal science, Anesthesia, Internal medicine, Physiology, Mathematics, Biology
3 authors
- Filip Sabol
- Jozo Grgić
- Pavle Mikulić · corresponding
Abstract
Purpose
To examine the acute effects of 3 doses of caffeine on upper- and lower-body ballistic exercise performance and to explore if habitual caffeine intake affects the acute effects of caffeine ingestion on ballistic exercise performance.
Methods
Twenty recreationally active male participants completed medicine-ball-throw and vertical-jump tests under 4 experimental conditions (placebo and 2, 4, and 6 mg·kg-1 of caffeine).
Results
One-way repeated-measures analysis of variance (ANOVA) with subsequent post hoc analyses indicated that performance in the medicine-ball-throw test improved, compared with placebo, only with a 6 mg·kg-1 dose of caffeine (P = .032). Effect size, calculated as the mean difference between the 2 measurements divided by the pooled SD, amounted to 0.29 (+3.7%). For the vertical-jump test, all 3 caffeine doses were effective (compared with placebo) for acute increases in performance (P values .022-.044, effect sizes 0.35-0.42, percentage changes +3.7% to +4.1%). A 2-way repeated-measures ANOVA indicated that there was no significant group × condition interaction effect, suggesting comparable responses between low (≤100 mg·d-1) and moderate to high (>100 mg·d-1) caffeine users to the experimental conditions.
Conclusion
Caffeine doses of 2, 4, and 6 mg·kg-1 seem to be effective for acute enhancements in lower-body ballistic exercise performance in recreationally trained male individuals. For the upper-body ballistic exercise performance, only a caffeine dose of 6 mg·kg-1 seems to be effective. The acute effects of caffeine ingestion do not seem to be affected by habitual caffeine intake; however, this requires further exploration.
Abstract via Europe PMC. Copyright remains with the authors or publisher.
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