Acute effects of caffeine intake on athletic performance: A systematic review and meta-analysis

Ribeiro, Beatriz Gonçalves; Morales, Anderson Pontes; Sampaio-Jorge, Felipe; Tinoco, Felipe de Souza; Matos, Alessandra Alegre de; Leite, Tiago Costa

doi:10.4067/s0717-75182017000300283

Cited by 18 publications

(19 citation statements)

References 28 publications

(51 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To address the apparent discrepancies between individual studies two previous meta-analyses explored the effects of caffeine on performance in the Yo-Yo test. In the first analysis, Gonç alves Ribeiro et al 10 reported no significant effects of caffeine on performance in this test. However, the analysis included only two studies with a combined number of participants amounting to 31.…”

Section: Introductionmentioning

confidence: 86%

Isolated effects of caffeine and sodium bicarbonate ingestion on performance in the Yo-Yo test: A systematic review and meta-analysis

Grgić

Garofolini

Pickering

et al. 2020

Journal of Science and Medicine in Sport

View full text Add to dashboard Cite

Objectives: To conduct a systematic review and a meta-analysis of studies exploring the effects of caffeine and/or sodium bicarbonate on performance in the Yo-Yo test. Design: Systematic review and meta-analysis. Methods: A total of six databases were searched, and random-effects meta-analyses were performed examining the isolated effects of caffeine and sodium bicarbonate on performance in the Yo-Yo test. Results: After reviewing 988 search records, 15 studies were included. For the effects of caffeine on performance in the Yo-Yo test, the meta-analysis indicated a significant favoring of caffeine as compared with the placebo conditions (p = 0.022; standardized mean difference [SMD] = 0.17; 95% CI: 0.08, 0.32; +7.5%). Subgroup analyses indicated that the effects of caffeine were significant for the level 2 version of the Yo-Yo test, but not level 1. Four out of the five studies that explored the effects of sodium bicarbonate used the level 2 version of the Yo-Yo test. The pooled SMD favored the sodium bicarbonate condition as compared with the placebo/control conditions (p = 0.007; SMD: 0.36; 95% CI: 0.10, 0.63; +16.0%). Conclusions: This review demonstrates that isolated ingestion of caffeine and sodium bicarbonate enhances performance in the Yo-Yo test. Given these ergogenic effects, the intake of caffeine and sodium bicarbonate before the Yo-Yo test needs to be standardized (i.e., either restricted or used in the same way before each testing session). Furthermore, the results suggest that individuals competing in sports involving intermittent exercise may consider supplementing with caffeine or sodium bicarbonate for acute improvements in performance.

show abstract

Section: Introductionmentioning

confidence: 86%

Isolated effects of caffeine and sodium bicarbonate ingestion on performance in the Yo-Yo test: A systematic review and meta-analysis

Grgić

Garofolini

Pickering

et al. 2020

Journal of Science and Medicine in Sport

View full text Add to dashboard Cite

show abstract

“…Doherty and Smith 6 did not report significant effects of caffeine on aerobic endurance performance when considering only graded exercise tests and including six studies. Gonçalves Ribeiro et al 8 did not report significant effects of caffeine on this outcome (analysed using maximum running distance tests) while including two studies. The 95% PIs for these analyses are reported in table 1.…”

Section: Effects Of Caffeine On Exercise Performancementioning

confidence: 99%

“…Consistency of meta-analytical findings is often lacking; even meta-analyses that have examined the same outcome may produce conflicting findings. For instance, Gonçalves Ribeiro et al 8 did not observe significant effects of caffeine ingestion on power. In contrast, a subsequent meta-analysis by Grgic 9 reported that caffeine ingestion is ergogenic for this outcome.…”

Section: Introductionmentioning

confidence: 94%

“…3 Given inconsistent evidence in the primary research that examined the effects of caffeine on exercise performance, several research groups explored this area using meta-analytical methods. [4][5][6][7][8][9][10][11][12][13][14][15] While these meta-analyses generally report ergogenic effects of caffeine on exercise performance, even adequately conducted meta-analyses tend to focus on the ergogenic effects of caffeine within just a single performance domain. As an illustration, Grgic and Pickering 10 only examined the effects of caffeine ingestion on isokinetic peak torque.…”

Section: Introductionmentioning

confidence: 99%

“…Protected by copyright. 8 included only studies that were published between January 2010 and December 2015. Due to these restrictions, studies published before 2010 were excluded from consideration, and the authors provided no rationale for their approach.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Wake up and smell the coffee: caffeine supplementation and exercise performance—an umbrella review of 21 published meta-analyses

et al. 2019

View full text Add to dashboard Cite

ObjectiveTo systematically review, summarise and appraise findings of published meta-analyses that examined the effects of caffeine on exercise performance.DesignUmbrella review.Data sourcesTwelve databases.Eligibility criteria for selecting studiesMeta-analyses that examined the effects of caffeine ingestion on exercise performance.ResultsEleven reviews (with a total of 21 meta-analyses) were included, all being of moderate or high methodological quality (assessed using the Assessing the Methodological Quality of Systematic Reviews 2 checklist). In the meta-analyses, caffeine was ergogenic for aerobic endurance, muscle strength, muscle endurance, power, jumping performance and exercise speed. However, not all analyses provided a definite direction for the effect of caffeine when considering the 95% prediction interval. Using the Grading of Recommendations Assessment, Development and Evaluation criteria the quality of evidence was generally categorised as moderate (with some low to very low quality of evidence). Most individual studies included in the published meta-analyses were conducted among young men.Summary/conclusionSynthesis of the currently available meta-analyses suggest that caffeine ingestion improves exercise performance in a broad range of exercise tasks. Ergogenic effects of caffeine on muscle endurance, muscle strength, anaerobic power and aerobic endurance were substantiated by moderate quality of evidence coming from moderate-to-high quality systematic reviews. For other outcomes, we found moderate quality reviews that presented evidence of very low or low quality. It seems that the magnitude of the effect of caffeine is generally greater for aerobic as compared with anaerobic exercise. More primary studies should be conducted among women, middle-aged and older adults to improve the generalisability of these findings.

show abstract

Caffeine and Exercise: What Next?

2019

View full text Add to dashboard Cite

Caffeine is a widely utilized performance-enhancing supplement used by athletes and non-athletes alike. In recent years, a number of meta-analyses have demonstrated that caffeine’s ergogenic effects on exercise performance are well-established and well-replicated, appearing consistent across a broad range of exercise modalities. As such, it is clear that caffeine is an ergogenic aid—but can we further explore the context of this ergogenic aid in order to better inform practice? We propose that future research should aim to better understand the nuances of caffeine use within sport and exercise. Here, we propose a number of areas for exploration within future caffeine research. These include an understanding of the effects of training status, habitual caffeine use, time of day, age, and sex on caffeine ergogenicity, as well as further insight into the modifying effects of genotype. We also propose that a better understanding of the wider, non-direct effects of caffeine on exercise, such as how it modifies sleep, anxiety, and post-exercise recovery, will ensure athletes can maximize the performance benefits of caffeine supplementation during both training and competition. Whilst not exhaustive, we hope that the questions provided within this manuscript will prompt researchers to explore areas with the potential to have a large impact on caffeine use in the future.

show abstract

Acute effects of caffeine intake on athletic performance: A systematic review and meta-analysis

Cited by 18 publications

References 28 publications

Isolated effects of caffeine and sodium bicarbonate ingestion on performance in the Yo-Yo test: A systematic review and meta-analysis

Isolated effects of caffeine and sodium bicarbonate ingestion on performance in the Yo-Yo test: A systematic review and meta-analysis

Wake up and smell the coffee: caffeine supplementation and exercise performance—an umbrella review of 21 published meta-analyses

Caffeine and Exercise: What Next?

Contact Info

Product

Resources

About