Acute and habitual caffeine ingestion and metabolic responses to steady-state exercise. 2017 27(11):1240–7.īangsbo J, Jacobsen K, Nordberg N, Christensen NJ, Graham T. Placebo in sports nutrition: a proof-of-principle study involving caffeine supplementation. Saunders B, de Oliveira LF, da Silva RP, de Salles PV, Goncalves LS, Yamaguchi G, et al. Caffeine and exercise: what next? Sports Med. The role of genetics in moderating the inter-individual differences in the ergogenicity of caffeine. Southward K, Rutherfurd-Markwick K, Badenhorst C, Ali A. Are we dependent upon coffee and caffeine? A review on human and animal data. Central nervous system effects of caffeine and adenosine on fatigue. 2019 11(2):286.ĭavis JM, Zhao Z, Stock HS, Mehl KA, Buggy J, Hand GA. Urine caffeine concentration in doping control samples from 2004 to 2015. 2020 54(11):681–8.Īguilar-Navarro M, Munoz G, Salinero JJ, Munoz-Guerra J, Fernandez-Alvarez M, Plata MDM, et al. Wake up and smell the coffee: caffeine supplementation and exercise performance-an umbrella review of 21 published meta-analyses. Grgic J, Grgic I, Pickering C, Schoenfeld BJ, Bishop DJ, Pedisic Z. IOC consensus statement: dietary supplements and the high-performance athlete. Maughan RJ, Burke LM, Dvorak J, Larson-Meyer DE, Peeling P, Phillips SM, et al. Habitual caffeine consumption does not appear to influence the acute ergogenic effect of caffeine. Habitual caffeine consumption did not modify the ergogenic effect of caffeine in male, female, trained or untrained individuals. Caffeine was effective for endurance, power, and strength exercise, with no influence (all p ≥ 0.23) of relative habitual caffeine consumption within exercise types. Sixty caffeine studies included sufficient information on habitual consumption to be included in the meta-analysis. Sub-analyses were performed according to the following: acute relative dose ( 6 mg/kg body mass ) whether the acute caffeine dose provided was lower or higher than the mean daily caffeine dose and the caffeine withdrawal period prior to the intervention ( 48 h). Three-level meta-analyses and meta-regression models were used to investigate the influence of habitual caffeine consumption on caffeine’s overall ergogenic effect and within different exercise types (endurance, power, strength), in men and women, and in trained and untrained individuals. Three databases were searched, and articles screened according to inclusion/exclusion criteria. The aim was to quantify the proportion of the literature on caffeine supplementation that reports habitual caffeine consumption, and determine the influence of habitual consumption on the acute exercise response to caffeine supplementation, using a systematic review and meta-analytic approach.
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