Effects of acute ingestion of caffeine on team sports performance: a systematic review and meta-analysis

Salinero, Juan José; Lara, Beatriz; Coso, Juan Del

doi:10.1080/15438627.2018.1552146

Cited by 131 publications

(143 citation statements)

References 76 publications

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“…As recently identified, caffeine supplementation may have a "responder" vs. "non-responder" nature, which limits the translation to "non-responder" populations [33]. The current investigation found a significant learning effect; however, it is possible that participants 2, 3,8,9,10,11,12,15,17,18,19, and 20 may have been "non-responders" to caffeine supplementation (see Table 1). The inter-individual differences in the ergogenicity of caffeine are thought to be related to genetic polymorphisms associated with the CYP1A2 and ADORA2A genes, which discern fast and slow caffeine metabolism/clearance [49,50].…”

Section: Discussionmentioning

confidence: 55%

“…Participants began the CrossFit ® workout-"Cindy"-60 min after the consumption of the pill(s). Sixty min was selected based on caffeine's pharmacokinetics and on investigations evaluating the effects of acute caffeine supplementation [11,36]. The workout was performed indoors in a gym, with the environmental temperature set to 22 • C (22.2 ± 0.4 • C).…”

Section: Measures and Proceduresmentioning

confidence: 99%

“…Recently, Mielgo-Ayuso addressed this concern within soccer players; however, a majority of the reviewed investigations evaluated aspects of physical performance (i.e., speed, power, agility, and time-to-exhaustion) with limited data reported regarding simulated performance [10]. Reasonably, instructing athletes with diverse physical demands to consume caffeine for performance benefits has limited evidence to support its efficacy [10,11]. Since preserving muscle function during competition is important for preventing premature fatigue, investigating the role of acute caffeine supplementation during combined exercise modalities is warranted.…”

Section: Introductionmentioning

confidence: 99%

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Acute Caffeine Supplementation Does Not Improve Performance in Trained CrossFit® Athletes

Stein

Ramirez

Heinrich

2020

Sports

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Caffeine's ergogenic effects persist during various exercise modalities; however, information establishing its efficacy during CrossFit ® protocols is limited. This study aimed to determine the effects of caffeine supplementation on CrossFit ® performance. Twenty CrossFit ® -trained men (age = 26.7 ± 6.2 years, experience = 3.7 ± 2.9 years) were randomized in a double-blind, crossover design. Participants completed two sessions separated by a seven-day washout period, 60 min after consuming 5 mg/kg body mass of caffeine or a placebo. In each session, participants completed as many rounds as possible in 20 min of five pull-ups, 10 push-ups, and 15 air squats. CrossFit ® performance was the total number of repetitions completed in 20 min. Paired-samples t-tests were used to compare CrossFit ® performance between caffeine and placebo conditions and to test for a potential learning effect between the first and second sessions. CrossFit ® performance was not significantly different during the caffeine condition compared to the placebo (468.6 ± 114.7 vs. 466.7 ± 94.3 repetitions, p = 0.861). A significant learning effect was identified between the first and second sessions (452.4 ± 101 vs. 483.8 ± 106.5 repetitions, p = 0.001), with no significant effect of treatment order (p = 0.438). Caffeine's ergogenic effect were not present during the CrossFit ® workout "Cindy"; however, future research should include familiarization sessions and examine other CrossFit ® workouts in novice and women participants.

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Section: Discussionmentioning

confidence: 55%

Section: Measures and Proceduresmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Acute Caffeine Supplementation Does Not Improve Performance in Trained CrossFit® Athletes

Stein

Ramirez

Heinrich

2020

Sports

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“…It is possible that some of the studies examining the effects of caffeine on rowing ergometer performance were statistically underpowered to observe significant effects, resulting in a type II error. The considerable inter-individual variation in responses to caffeine's effects on exercise performance [8] coupled with underpowered studies might have produced that the potential ergogenic effect of caffeine on rowing is disguised, particularly after the solid evidence of this substance in other sport disciplines [9]. In that regard, meta-analysis presents a method that allows pooling of studies that address a similar research question.…”

Section: Introductionmentioning

confidence: 99%

The Effects of Caffeine Ingestion on Measures of Rowing Performance: A Systematic Review and Meta-Analysis

et al. 2020

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The purpose of this paper was to conduct a systematic review and a meta-analysis of studies examining the acute effects of caffeine ingestion on measures of rowing performance. Crossover and placebo-controlled experiments that investigated the effects of caffeine ingestion on measures of rowing performance were included. The PEDro checklist was used to assess the methodological quality of the included studies. Seven studies of good and excellent methodological quality were included. None of the included studies examined on-water rowing. The majority of studies that were included in the meta-analysis used a 2000m rowing distance with only one using 1000m distance. Results of the main meta-analysis indicated that caffeine enhances performance on a rowing ergometer compared to placebo with a mean difference of −4.1 s (95% confidence interval (CI): −6.4, −1.8 s). These values remained consistent in the analysis in which the study that used a 1000m distance was excluded (mean difference: −4.3 s; 95% CI: −6.9, −1.8 s). We also found a significant increase in mean power (mean difference: 5.7 W; 95% CI: 2.1, 9.3 W) and minute ventilation (mean difference: 3.4 L/min; 95% CI: 1.7, 5.1 L/min) following caffeine ingestion. No significant differences between caffeine and placebo were found for the rating of perceived exertion, oxygen consumption, respiratory exchange ratio, and heart rate. This meta-analysis found that acute caffeine ingestion improves 2000m rowing ergometer performance by~4 s. Our results support the use of caffeine pre-exercise as an ergogenic aid for rowing performance.

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“…However, its potent ability to enhance physical performance and wakefulness has favoured the inclusion of this stimulant in several over‐the‐counter medications and dietary supplements . Caffeine has the capacity to improve performance in a wide‐variety of exercise activities when ingested at low‐to‐moderate doses (3–9 mg/kg body mass). Perhaps, this is the reason why caffeine is ingested by ~80% of competitive athletes .…”

Section: Introductionmentioning

confidence: 99%

Acute caffeine intake increases muscle oxygen saturation during a maximal incremental exercise test

Ruíz-Moreno

Lara

Souza

et al. 2020

Brit J Clinical Pharma

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Aims:The main mechanism behind caffeine's ergogenicity lies in its tendency to bind to adenosine receptors, although other mechanisms might be involved. The aim of this investigation was to analyse the effects of caffeine on muscle oxygen saturation during exercise of increasing intensity. Methods:Thirteen healthy and active individuals volunteered to participate in a randomized, double blind, placebo-controlled crossover trial. During 2 different trials, participants either ingested a placebo (cellulose) or 3 mg/kg of caffeine. After waiting for 60 min to absorb the substances, participants underwent a maximal ramp cycle ergometer test (25 W/min). Near infrared spectrometers were positioned on each leg's vastus lateralis to monitor tissue O 2 saturation. Blood lactate concentration was measured 1 min after the end of the exercise test. Results:In comparison to the placebo, the ingestion of caffeine improved the maximal wattage (258 ± 50 vs 271 ± 54 W, respectively, P < .001, effect size [ES] = 0.27; 95% confidence interval [CI] 0.14-0.35) and blood lactate concentration (11.9 ± 3.8 vs 13.7 ± 3.5 mmol/L, P = .029, ES = 0.38; 95% CI 0.14-0.75) at the end of the test.Caffeine increased muscle oxygen saturation at several exercise workloads with a main effect found in respect to the placebo (F = 6.28, P = .029; ES = 0.30 to 0.54; 95% CI 0.01-0.78). Peak pulmonary ventilation (124 ± 29 vs 129 ± 23 L/min, P = 0.035, ES = 0.25; 95% CI 0.07-0.40) and peak oxygen uptake (3.18 ± 0.70 vs 3.33 ± 0.88 L/min, P = 0.032, ES = 0.26; 95% CI 0.08-0.51) were also increased with caffeine.Conclusion: Acute ingestion of 3 mg/kg of caffeine improved peak aerobic performance and increased peak pulmonary ventilation. In addition, caffeine induced changes in muscle oxygen saturation during submaximal workloads, suggesting that this mechanism might also contribute to caffeine's ergogenic effect. K E Y W O R D Scycling, high intensity exercise, muscle oxygenation, near infrared spectroscopy, VO 2 max The authors confirm that the Principal Investigator for this paper is Juan del Coso and he had direct clinical responsibility for patients.

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Effects of acute ingestion of caffeine on team sports performance: a systematic review and meta-analysis

Cited by 131 publications

References 76 publications

Acute Caffeine Supplementation Does Not Improve Performance in Trained CrossFit® Athletes

Acute Caffeine Supplementation Does Not Improve Performance in Trained CrossFit® Athletes

The Effects of Caffeine Ingestion on Measures of Rowing Performance: A Systematic Review and Meta-Analysis

Acute caffeine intake increases muscle oxygen saturation during a maximal incremental exercise test

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