Caffeine improves muscular performance in elite Brazilian Jiu‐jitsu athletes

Diaz-Lara, Francisco Javier; Coso, Juan Del; García, José Manuel García; Portillo, Luis Javier; Areces, Francisco; Abián-Vicén, Javier

doi:10.1080/17461391.2016.1143036

Cited by 68 publications

(93 citation statements)

References 41 publications

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“…Results showed that power increased with all loads with caffeine ingestion, except for the bench press velocity at 1 m•s -1 (p = 0.06, Cohen's d = 0.68). Using the same dose of caffeine in a group of 14 Brazilian jiu-jitsu athletes, Diaz-Lara et al [69] confirmed that caffeine may be ergogenic for power, showing an increase in maximal power and mean power in the bench press exercise.…”

Section: Effects Of Caffeine On Powermentioning

confidence: 94%

The Influence of Caffeine Supplementation on Resistance Exercise: A Review

et al. 2018

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This paper aims to critically evaluate and thoroughly discuss the evidence on the topic of caffeine supplementation when performing resistance exercise, as well as provide practical guidelines for the ingestion of caffeine prior to resistance exercise. Based on the current evidence, it seems that caffeine increases both maximal strength and muscular endurance. Furthermore, power appears to be enhanced with caffeine supplementation, although this effect might, to a certain extent, be caffeine dose-and external load-dependent. A reduction in rating of perceived exertion (RPE) might contribute to the performance-enhancing effects of caffeine supplementation, as some studies have observed decreases in RPE coupled with increases in performance following caffeine ingestion. However, the same does not seem to be the case for pain perception, as there is evidence showing acute increases in resistance exercise performance without any significant effects of caffeine ingestion on pain perception. Some studies have reported that caffeine ingestion did not affect exercise-induced muscle damage but that it might reduce perceived resistance exercise-induced delayed onset muscle soreness; however, this needs to be explored further. There is some evidence that caffeine ingestion, compared to a placebo, may lead to greater increases in the production of testosterone and cortisol following resistance exercise. However, given that the acute changes in hormone levels seem to be weakly correlated with hallmark adaptations to resistance exercise, such as hypertrophy and increased muscular strength, these findings are likely of questionable practical significance. Although not without contrasting findings, the available evidence suggests that caffeine ingestion can lead to acute increases in blood pressure (primarily systolic), and, thus, caution is needed regarding caffeine supplementation among individuals with high blood pressure. In the vast majority of studies, caffeine was administered in capsule or powder forms, and therefore, the effects of alternative forms of caffeine such as chewing gums or mouth rinses on resistance exercise performance remain 3 unclear. The emerging evidence suggests that coffee might be at least equally ergogenic as caffeine alone when the caffeine dose is matched. Doses in the range of 3 to mg•kg-1 seem to be adequate for eliciting an ergogenic effect when administered 60 min pre-exercise. In general, caffeine seems to be safe when taken in the recommended doses. However, at doses as high as 9 mg•kg-1 or higher, side-effects such as insomnia might be more pronounced. It remains unclear whether habituation reduces the ergogenic benefits of caffeine on resistance exercise, as no evidence exists for this type of exercise. Caution is needed when extrapolating these conclusions to females as the vast majority of studies involved only male participants. Key points  Caffeine supplementation may acutely enhance muscular endurance, maximal strength, and power in resistance exercise.  Doses in the range 3 to 9 mg...

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Section: Effects Of Caffeine On Powermentioning

confidence: 94%

The Influence of Caffeine Supplementation on Resistance Exercise: A Review

et al. 2018

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“…The participants responded to an 8-item survey regarding the incidence of side effects ("yes/no" response scale). This survey was also used to examine side effects in previous research that explored effects of caffeine on exercise performance [20,22,23].…”

Section: Side Effectsmentioning

confidence: 99%

CYP1A2 genotype and acute effects of caffeine on resistance exercise, jumping, and sprinting performance

Grgić

Pickering

Bishop

et al. 2020

Journal of the International Society of Sports Nutrition

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Background: It has been suggested that polymorphisms within CYP1A2 impact inter-individual variation in the response to caffeine. The purpose of this study was to explore the acute effects of caffeine on resistance exercise, jumping, and sprinting performance in a sample of resistance-trained men, and to examine the influence of genetic variation of CYP1A2 (rs762551) on the individual variation in responses to caffeine ingestion.Methods: Twenty-two men were included as participants (AA homozygotes n = 13; C-allele carriers n = 9) and were tested after the ingestion of caffeine (3 mg/kg of body mass) and a placebo. Exercise performance was assessed with the following outcomes: (a) movement velocity and power output in the bench press exercise with loads of 25, 50, 75, and 90% of one-repetition maximum (1RM); (b) quality and quantity of performed repetitions in the bench press exercise performed to muscular failure with 85% 1RM; (c) vertical jump height in a countermovement jump test; and (d) power output in a Wingate test.Results: Compared to placebo, caffeine ingestion enhanced: (a) movement velocity and power output across all loads (effect size [ES]: 0.20-0.61; p < 0.05 for all); (b) the quality and quantity of performed repetitions with 85% of 1RM (ES: 0.27-0.85; p < 0.001 for all); (c) vertical jump height (ES: 0.15; p = 0.017); and (d) power output in the Wingate test (ES: 0.33-0.44; p < 0.05 for all). We did not find a significant genotype × caffeine interaction effect (pvalues ranged from 0.094 to 0.994) in any of the analyzed performance outcomes.Conclusions: Resistance-trained men may experience acute improvements in resistance exercise, jumping, and sprinting performance following the ingestion of caffeine. The comparisons of the effects of caffeine on exercise performance between individuals with the AA genotype and AC/CC genotypes found no significant differences.

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“…Surprisingly, only seven studies (43.8%) reported using normality tests. 15,16,[20][21][22][23][24] However, the normality tests were on small samples (n = 10 to 18), which produce an inherent bias because such samples tend to have nonparametric distributions. 25 Only three studies (18.8%) performed analyses of the blinding procedures.…”

Section: Methodological Aspectsmentioning

confidence: 99%

“…The type of contraction does not seem to be a key factor because five other studies using isometric contractions reported ergogenic effects. 21,22,[26][27][28] The five studies that did not observe increased strength included volunteers not habituated to caffeine or with low caffeine consumption and four of them 20,24,29,30 evaluated the strength of smaller muscle groups. Hence, the ergogenic effects of CAFF were present in voluntary muscle contraction in eleven (68.8%) of the 16 analyzed studies.…”

Section: Caffeine Effect On Strengthmentioning

confidence: 99%

“…The findings of the studies included in this review were attributed to central and peripheral mechanisms. Interestingly, eight studies (50.0%) mentioned the peripheral mechanisms, citing the following: 1) a higher calcium release, 14,19,[22][23][24]26,28,30 2) a greater sodium/potassium ATPase pump activity, 19,22,28 3) an increased muscle sensitivity to calcium, 26,28 4) inhibition of phosphodiesterase, 22 5) a lower reabsorption of calcium from the sarcoplasmic reticulum, 6) a higher muscle fiber conduction velocity, and 7) a greater excitability of muscle sarcolemma. 26 Two studies mentioned that individual CAFF metabolism capacity could explain the occurrence of responders and nonresponders in their results.…”

Section: Mechanisms Involved In Strength Increasementioning

confidence: 99%

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Muscle Strength and Caffeine Supplementation: Are We Doing More of the Same?

Soares

Garcia

Molina

et al. 2019

Rev Bras Med Esporte

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The purpose of this review was to examine in the current literature the advances made in terms of the effects of caffeine supplementation on maximum strength and its associated mechanisms since the publication of two important papers in 2010. Searches were carried out in the PubMed, Medline, Scielo and Web of Science databases for articles published after 2010. Sixteen studies were included based on inclusion and exclusion criteria. Five studies did not report changes in maximal voluntary strength (31.3%). Four of them used isometric muscle contractions, although this may not be a key factor because five other studies also used isometric contractions and reported ergogenic effects. Furthermore, these four studies evaluated small muscle groups and volunteers were not accustomed to consuming caffeine. Caffeine produced ergogenic effects in eleven of the sixteen studies analyzed (68.8%). None of the doses were clearly related to ergogenic effects; however, a dose of at least 3 mg/kg of caffeine is probably necessary. Caffeine ergogenicity was affected by various factors. There was a lack of standardized protocols and controls for intervening factors (e.g., circadian cycles and nutritional states), which could affect results. An ideal caffeine supplementation protocol that is useful for future research, athletes, and physical activity practitioners, has yet to be defined. A small advance made since 2010 involved a possible lack of gender difference; it would appear that caffeine supplementation affects men and women equally. Level of Evidence I; Systematic Review of Level I Studies.

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Caffeine improves muscular performance in elite Brazilian Jiu‐jitsu athletes

Cited by 68 publications

References 41 publications

The Influence of Caffeine Supplementation on Resistance Exercise: A Review

The Influence of Caffeine Supplementation on Resistance Exercise: A Review

CYP1A2 genotype and acute effects of caffeine on resistance exercise, jumping, and sprinting performance

Muscle Strength and Caffeine Supplementation: Are We Doing More of the Same?

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