Caffeine supplementation for 4-day, followed by acute ingestion, did not impact triathlete output power after submaximal intensity exercise

Anderson Pontes Morales, Felipe Sampaio-Jorge, Thiago Barth, Alessandra Alegre de Matos, Luiz Felipe da Cruz Rangel, Beatriz Gonçalves Ribeiro


Introduction: The aim of this study was to test the hypothesis that caffeine supplementation (6 mg·kg-1 body mass) for 4-days, followed by acute intake, would impact five male triathletes output power after performed submaximal intensity exercise. Methods: This was a randomized, double-blind, placebo-controlled crossover study, placebo (4-day) - placebo (acute) PP, placebo (4-days) -caffeine (acute) PC, and caffeine (4-day) - caffeine (acute) CC. Participants abstained from dietary caffeine sources for 4 days and ingested capsules containing either placebo or caffeine (6 body mass day in one absorption). The acute trials the capsules containing placebo or caffeine (6 body mass day in one absorption) were ingested 60min before completing exercise in a treadmill for 40min (80% VO2max) and to perform the Wingate test. Results: Blood lactate was determined before, 60min after ingestion, and immediately after the exercise on the treadmill, the Wingate test, and after the recovery (10-min). CC and PC trials did not change the cardiopulmonary variables (P>0.05) and the anaerobic power variables (peak/mean power output and fatigue index) (P>0.05). The PC trial compared with PP promoted improvements in the curve power output in 2 sec by 31.19% (large effect-size d = 1.08; P<0.05) and 3 sec by 20% (large effect-size d = 1.19; P<0.05). A 10min recovery was not sufficient to reduce blood lactate concentration in the PC trial compared with PP (PC, 13.73±2.66 vs. PP, 10.26±1.60 mmol.L-1; P<0.05, respectively) (P<0.05). Conclusion: In conclusion, these results indicate that caffeine supplementation (6 mg·kg-1 body mass) for 4 days, followed by acute ingestion, did not impact the triathletes output power after performed submaximal intensity exercise. Nutritional interventions may help researchers and athletes to adapt strategies for manipulating caffeine use.

Key-words: caffeine metabolism, Wingate test, blood lactate, performance.

Texto completo:



Bentley DJ. Millet GP,Vleck VE, McNaughton LR. Specific aspects of contemporary triathlon: implications for physiological analysis and performance. Sports Med 2002;32(6):345-9.

Bonsignore MR, Morici G, Abate P, Romano S, Bonsignore G. Ventilation and entrainment of breathing during cycling and running in triathletes. Med Sci Sports Exercise 1998;30(2):239-5.

Barnes KR, Kilding AE. Strategies to improve running economy. Sports Med 2015;45(1):37-56.

Lara B, Ruiz-Moreno C, Salinero JJ, Del Coso J. Time course of tolerance to the performance benefits of caffeine. PLoS One 2019;14:e0210275.

Ribeiro BG, Morales AP, Sampaio-Jorge F, Barth T, de Oliveira MB, Coelho GM et al. Caffeine attenuates decreases in leg power without increased muscle damage. Journal of Strength & Conditioning Research 2016;30(8):2354-2360.

Powers SK, Dodd S, Woodyard J, Magnum M. Caffeine alters ventilator and gas exchange kinetics during exercise. Med Sci Sports Exercise 1986;18(1):101-6.

Assi HN, Bottoms L. The effects of caffeine on rugby passing accuracy while performing the Reactive Agility Test. Sci Sports 2014;29(5):275-81.

Ribeiro BG, Morales AP, Sampaio-Jorge F, Tinoco FS, MatosAA, Leite TC.Acute effects of caffeine intake on athletic performance: A systematic review and meta-analysis. Revista Chilena de Nutrición 2017;44(3):283-91.

Wilk M, Krzysztofik M, Maszczyk A, Chycki J, Zajac A. The acute effects of caffeine intake on time under tension and power generated during the bench press movement. International Society of Sports Nutrition 2019;16(1):8.

Grgic J, Mikulic P, Schoenfeld BJ, Bishop DJ, Pedisic Z. The influence of caffeine supplementation on resistance exercise: A review. Sports Med 2019;49(1):17-30.

Chapman RF, Mickleborough TD. The effects of caffeine on ventilation and pulmonary function during exercise: an often-overlooked response. Physician and Sports Medicine 2009;37(4):97-103.

Chapman RF, Stager JM. Caffeine stimulates ventilation in athletes with exercise-induced hypoxemia. Medicine & Science in Sports & Exercise 2008;40(6):1080-6.

Hodgson AB, Randell RK, Jeukendrup AE. The metabolic and performance effects of caffeine compared to coffee during endurance exercise. PLoS One 2013;8(4):e59561.

Skinner TL, Jenkins DG, Taaffe DR, Leveritt MD, Coombes JS. Coinciding exercise with peak serum caffeine does not improve cycling performance. J Sci Med Sport 2013;16(1):54-9.

Irwin C, Desbrow B, Ellis A, Rant BO, Leveritt M. Caffeine withdrawal and high-intensity endurance cycling performance. J Sports Sci 2011;29(5):509-15.

Johansson B, Ahlberg S, van der Ploeg I, Brené S, Lindefors N, Persson H et al. Effect of long term caffeine treatment on A1 and A2 adenosine receptor binding and on mRNA levels in rat brain. Naunyn-Schmiedeberg's Archives of Pharmacology 1993;347(4):407-14.

Beaumont R, Cordery P, Funnell M, Mears S, James L, Watson P. Chronic ingestion of a low dose of caffeine induces tolerance to the performance benefits of caffeine. J Sports Sci 2017;35(19):1920-27.

Lynge J, Hellsten Y. Distribution of adenosine A1, A2A and A2B receptors in human skeletal muscle. Acta Physiologica Scandinavica 2000;169(4):283-90.

Yang JN, Chen JF, Fredholm BB. Physiological roles of A1 and A2A adenosine receptors in regulating heart rate, body temperature, and locomotion as revealed using knockout mice and caffeine. Am J Physiol Heart Cir Physiol 2009;296(4):H1141-1149.

Landrum RE, Meliska CJ, Loke WH. Effects of caffeine and task experience on task performance. Psychologia: An International Journal of Psychology in the Orient 1988;31(2):91-7.

Westerterp-Plantenga MS, Lejeune MP, Kovacs EM. Body weight loss and weight maintenance in relation to habitual caffeine intake and green tea supplementation. Obes Res 2005;13(7):1195-1204.

Morales AP, Sampaio-Jorge F, Cruz Rangel LF, Souza MJ, Leite TC, Ribeiro BG. Cardiopulmonary performance during maximal exercise in soccer players with alterations in renal function. J Hum Kinet 2017;57(1):107-15.

Bar-Or O. The Wingate anaerobic test. An update on methodology, reliability and validity. Sports Med 1987;4(6):381-94.

Van Soeren MH, Graham TE. Effect of caffeine on metabolism, exercise endurance, and catecholamine responses after withdrawal. J Applied Physiol 1998;85(4):1493-501.

Elmenhorst D, Meyer PT, Matusch A, Winz OH, Bauer A. Caffeine occupancy of human cerebral A1 adenosine receptors: in vivo quantification with 18F-CPFPX and PET. Journal of Nuclear Medicine 2012;53(11):1723-29.

Svenningsson P, Nomikos GG, Fredholm BB. The stimulatory action and the development of tolerance to caffeine is associated with alterations in gene expression in specific brain regions. J Neurosci 1999;19(10):4011-22.

Fredholm BB, Bättig K, Holmén J, Nehlig A, Zvartau EE. Actions of caffeine in the brain with special reference to factors that contribute to its widespread use. Pharmacological Reviews 1999;51(1):83-133.

Gonçalves LS, Painelli VS, Yamaguchi G, Oliveira LF, Saunders B, Silva RP, et al. Dispelling the myth that habitual caffeine consumption influences the performance response to acute caffeine supplementation. J Applied Phys 2017;123(1):213-20.

Mayock DE, Standaert TA, Woodrum DE. Effect of methylxanthines on diaphragmatic fatigue in the piglet. Pediatr Res 1992;32(5):580-4.



  • Não há apontamentos.

Direitos autorais 2019 Revista Brasileira de Fisiologia do Exercício