References
- Naser N, Ali A, Macadam P. Physical and physiological demands of futsal. J Exerc Sci Fit. 2017;15(2):76–80. doi:https://doi.org/10.1016/j.jesf.2017.09.001.
- Sekulic D, Foretic N, Gilic B, Esco MR, Hammami R, Uljevic O, Versic S, Spasic M. Importance of Agility Performance in Professional Futsal Players; Reliability and Applicability of Newly Developed Testing Protocols. IJERPH. 2019;16(18):3246. doi:https://doi.org/10.3390/ijerph16183246.
- Serrano C, Sánchez-Sánchez J, López-Fernández J, Hernando E, Gallardo L. Influence of the playing surface on changes of direction and plantar pressures during an agility test in youth futsal players. Eur J Sport Sci. 2020;20(7):906–914.
- Lockie RG, Schultz AB, Callaghan SJ, Jeffriess MD, Berry SP. Reliability and Validity of a New Test of Change-of-Direction Speed for Field-Based Sports: the Change-of-Direction and Acceleration Test (CODAT). J Sports Sci Med. 2013;12(1):88–96.
- Fiorilli G, Mitrotasios M, Iuliano E, Pistone EM, Aquino G, Calcagno G, DI Cagno A. Agility and change of direction in soccer: differences according to the player ages. J Sports Med Phys Fitness. 2017; Dec57(12):1597–604.
- Pojskic H, Åslin E, Krolo A, Jukic I, Uljevic O, Spasic M, Sekulic D. Importance of Reactive Agility and Change of Direction Speed in Differentiating Performance Levels in Junior Soccer Players: Reliability and Validity of Newly Developed Soccer-Specific Tests. Front Physiol. 2018; May 159:506.
- Barbero-Alvarez JC, Soto VM, Barbero-Alvarez V, Granda-Vera J. Match analysis and heart rate of futsal players during competition. J Sports Sci. 2008;26(1):63–73. doi:https://doi.org/10.1080/02640410701287289.
- Grgic J, Grgic I, Pickering C, Schoenfeld BJ, Bishop DJ, Pedisic Z. Wake up and smell the coffee: caffeine supplementation and exercise performance-an umbrella review of 21 published meta-analyses. Br J Sports Med. 2020; Jun54(11):681–8. doi:https://doi.org/10.1136/bjsports-2018-100278.
- López-González LM, Sánchez-Oliver AJ, Mata F, Jodra P, Antonio J, Domínguez R. Acute caffeine supplementation in combat sports: a systematic review. J Int Soc Sports Nutr. 2018;15(1):60 doi:https://doi.org/10.1186/s12970-018-0267-2.
- Southward K, Rutherfurd-Markwick KJ, Ali A. The Effect of Acute Caffeine Ingestion on Endurance Performance: A Systematic Review and Meta-Analysis. Sports Med. 2018;48(8):1913–28. doi:https://doi.org/10.1007/s40279-018-0939-8.
- Lee CL, Cheng CF, Lin JC, Huang HW. Caffeine's effect on intermittent sprint cycling performance with different rest intervals. Eur J Appl Physiol. 2012;112(6):2107–16. doi:https://doi.org/10.1007/s00421-011-2181-z.
- Eaton TR, Potter A, Billaut F, Panchuk D, Pyne DB, Gore CJ, Chen TT, McQuade L, Stepto NK. A Combination of Amino Acids and Caffeine Enhances Sprint Running Capacity in a Hot, Hypoxic Environment. Int J Sport Nutr Exerc Metab. 2016;26(1):33–45. doi:https://doi.org/10.1123/ijsnem.2015-0108.
- 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. Pharmacol Rev. 1999;51(1):83–133.
- Bazzucchi I, Felici F, Montini M, Figura F, Sacchetti M. Caffeine improves neuromuscular function during maximal dynamic exercise. Muscle Nerve. 2011; Jun43(6):839–44. doi:https://doi.org/10.1002/mus.21995.
- Silva-Cavalcante MD, Correia-Oliveira CR, Santos RA, Lopes-Silva JP, Lima HM, Bertuzzi R, Duarte M, Bishop DJ, Lima-Silva AE. Caffeine increases anaerobic work and restores cycling performance following a protocol designed to lower endogenous carbohydrate availability. PLoS One. 2013;8(8):e72025 doi:https://doi.org/10.1371/journal.pone.0072025.
- Andrade-Souza VA, Bertuzzi R, de Araujo GG, Bishop D, Lima-Silva AE. Effects of isolated or combined carbohydrate and caffeine supplementation between 2 daily training sessions on soccer performance. Appl Physiol Nutr Metab. 2015;40(5):457–63. doi:https://doi.org/10.1139/apnm-2014-0268.
- Ellis M, Noon M, Myers T, Clarke N. Low Doses of Caffeine: Enhancement of Physical Performance in Elite Adolescent Male Soccer Players. Int J Sports Physiol Perform. 2019; May 114(5):569–75. doi:https://doi.org/10.1123/ijspp.2018-0536.
- Apostolidis A, Mougios V, Smilios I, Rodosthenous J, Hadjicharalambous M. Caffeine Supplementation: Ergogenic in Both High and Low Caffeine Responders. Int J Sports Physiol Perform. 2019; May 114(5):650–7. doi:https://doi.org/10.1123/ijspp.2018-0238.
- Mielgo-Ayuso J, Calleja-Gonzalez J, Del Coso J, Urdampilleta A, León-Guereño P, Fernández-Lázaro D. Caffeine Supplementation and Physical Performance, Muscle Damage and Perception of Fatigue in Soccer Players: A Systematic Review. Nutrients. 2019; Feb 2011(2):440. doi:https://doi.org/10.3390/nu11020440.
- Azad A, Taghilou A, Torksamneni A. Acute caffeine supplementation retards aerobic and lactic anaerobic performance decline following a simulated futsal protocol. MoHE. 2018;7(2):195–205. doi:https://doi.org/10.15282/mohe.v7i2.232.
- Stojanović E, Stojiljković N, Scanlan AT, Dalbo VJ, Stanković R, Antić V, Milanović Z. Acute caffeine supplementation promotes small to moderate improvements in performance tests indicative of in-game success in professional female basketball players. Appl Physiol Nutr Metab. 2019;44(8):849–56. doi:https://doi.org/10.1139/apnm-2018-0671.
- Ranchordas MK, Pratt H, Parsons M, Parry A, Boyd C, Lynn A. Effect of caffeinated gum on a battery of rugby-specific tests in trained university-standard male rugby union players. J Int Soc Sports Nutr. 2019;16(1):17 doi:https://doi.org/10.1186/s12970-019-0286-7.
- Kopec BJ, Dawson BT, Buck C, Wallman KE. Effects of sodium phosphate and caffeine ingestion on repeated-sprint ability in male athletes. J Sci Med Sport. 2016;19(3):272–6. doi:https://doi.org/10.1016/j.jsams.2015.04.001.
- Betts JA, Gonzalez JT, Burke LM, Close GL, Garthe I, James LJ, Jeukendrup AE, Morton JP, Nieman DC, Peeling P, et al. PRESENT 2020: Text Expanding on the Checklist for Proper Reporting of Evidence in Sport and Exercise Nutrition Trials. Int J Sport Nutr Exerc Metab. 2020;30(1):2–13. [Epub ahead of print]. doi:https://doi.org/10.1123/ijsnem.2019-0326.
- Hopkins WG. Measures of reliability in sports medicine and science. Sports Med. 2000;30(1):1–15.
- Wilkinson M, Leedale-Brown D, Winter EM. Validity of a squash-specific test of change-of-direction speed. Int J Sports Physiol Perform. 2009;4(2):176–85. doi:https://doi.org/10.1123/ijspp.4.2.176.
- Jackson AS, Pollock ML. Generalized equations for predicting body density of men. Br J Nutr. 1978;40(3):497–504. doi:https://doi.org/10.1079/bjn19780152.
- Siri WE. Body Composition From Fluid Spaces and Density: Analysis of Methods. Adv Biol Med Phy. 1956;9(5):480–91.
- Hachana Y, Chaabène H, Nabli MA, Attia A, Moualhi J, Farhat N, Elloumi M. Test-retest reliability, criterion-related validity, and minimal detectable change of the Illinois agility test in male team sport athletes. J Strength Cond Res. 2013;27:2752–9.
- Saunders B, de Oliveira LF, da Silva RP, de Salles Painelli V, Gonçalves LS, Yamaguchi G, Mutti T, Maciel E, Roschel H, Artioli GG, Gualano B. Placebo in sports nutrition: a proof-of-principle study involving caffeine supplementation. Scand J Med Sci Sports. 2017;27(11):1240–7. doi:https://doi.org/10.1111/sms.12793.
- Grgic J, Pickering C, Bishop DJ, Del Coso J, Schoenfeld BJ, Tinsley GM, Pedisic Z. ADOR2A C Allele Carriers Exhibit Ergogenic Responses to Caffeine Supplementation. Nutrients. 2020;12(3):741. doi:https://doi.org/10.3390/nu12030741.
- Bang H, Ni L, Davis CE. Assessment of blinding in clinical trials. Control Clin Trials. 2004;25(2):143–56. doi:https://doi.org/10.1016/j.cct.2003.10.016.
- Bang H, Flaherty SP, Kolahi J, Park J. Blinding assessment in clinical trials: A review of statistical methods and a proposal of blinding assessment protocol. Clin Res Regul Aff. 2010;27(2):42–51. doi:https://doi.org/10.3109/10601331003777444.
- Venier S, Grgic J, Mikulic P. Caffeinated Gel Ingestion Enhances Jump Performance, Muscle Strength, and Power in Trained Men. Nutrients. 2019; Apr 2511(4):937. doi:https://doi.org/10.3390/nu11040937.
- Pallarés JG, Fernández-Elías VE, Ortega JF, Muñoz G, Muñoz-Guerra J, Mora-Rodríguez R. Neuromuscular responses to incremental caffeine doses: performance and side effects. Med Sci Sports Exerc. 2013; Nov45(11):2184–92. doi:https://doi.org/10.1249/MSS.0b013e31829a6672.
- Borg E, Kaijser L. A comparison between three rating scales for perceived exertion and two different work tests. Scand J Med Sci Sports. 2006;16(1):57–69. doi:https://doi.org/10.1111/j.1600-0838.2005.00448.x.
- Lopes-Silva JP, Da Silva Santos JF, Artioli GG, Loturco I, Abbiss C, Franchini E. Sodium bicarbonate ingestion increases glycolytic contribution and improves performance during simulated taekwondo combat. Eur J Sport Sci. 2018;18(3):431–40. doi:https://doi.org/10.1080/17461391.2018.1424942.
- Hopkins WG, Marshall SW, Batterham AM, Hanin J. Progressive statistics for studies in sports medicine and exercise science. Med Sci Sports Exerc. 2009;41(1):3–13.
- Lorino AJ, Lloyd LK, Crixell SH, Walker JL. The effects of caffeine on athletic agility. J Strength Cond Res. 2006; Nov20(4):851–4. doi:https://doi.org/10.1519/R-17445.1.
- Lopes-Silva JP, Choo HC, Franchini E, Abbiss CR. Isolated ingestion of caffeine and sodium bicarbonate on repeated sprint performance: A systematic review and meta-analysis. J Sci Med Sport. 2019;22(8):962–72. doi:https://doi.org/10.1016/j.jsams.2019.03.007.
- Grgic J, Garofolini A, Pickering C, Duncan MJ, Tinsley GM, Del Coso J. Isolated effects of caffeine and sodium bicarbonate ingestion on performance in the Yo-Yo test: A systematic review and meta-analysis. J Sci Med Sport. 2020; Jan23(1):41–7. doi:https://doi.org/10.1016/j.jsams.2019.08.016.
- Gaitanos GC, Williams C, Boobis LH, Brooks S. Human muscle metabolism during intermittent maximal exercise. J Appl Physiol (1985)). 1993;75(2):712–9. doi:https://doi.org/10.1152/jappl.1993.75.2.712.
- Correia-Oliveira CR, Lopes-Silva JP, Bertuzzi R, McConell GK, Bishop DJ, Lima-Silva AE, Kiss MAPD. Acidosis, but Not Alkalosis, Affects Anaerobic Metabolism and Performance in a 4-km Time Trial. Med Sci Sports Exerc. 2017;49(9):1899–910. doi:https://doi.org/10.1249/MSS.0000000000001295.
- Greer F, McLean C, Graham TE. Caffeine, performance, and metabolism during repeated Wingate exercise tests. J Appl Physiol (1985)). 1998;85(4):1502–8. doi:https://doi.org/10.1152/jappl.1998.85.4.1502.
- Bishop D. Dietary supplements and team-sport performance. Sports Med. 2010;40(12):995–1017. doi:https://doi.org/10.2165/11536870-000000000-00000.
- Walter G, Vandenborne K, McCully KK, Leigh JS. Noninvasive measurement of phosphocreatine recovery kinetics in single human muscles. Am J Physiol. 1997;272(2):C525–C534. doi:https://doi.org/10.1152/ajpcell.1997.272.2.C525.
- Lindh AM, Peyrebrune MC, Ingham SA, Bailey DM, Folland JP. Sodium bicarbonate improves swimming performance. Int J Sports Med. 2008;29(6):519–23. ‐doi:https://doi.org/10.1055/s-2007-989228.
- Correia-Oliveira CR, Santos RA, Silva-Cavalcante MD, Bertuzzi R, Kiss MA, Bishop DJ, Lima-Silva AE. Prior low- or high-intensity exercise alters pacing strategy, energy system contribution and performance during a 4-km cycling time trial. PLoS One. 2014;9(10):e110320. doi:https://doi.org/10.1371/journal.pone.0110320.
- García-Rovés PM, García-Zapico P, Patterson AM, Iglesias-Gutiérrez E. Iglesias-Gutiérrez E. Nutrient intake and food habits of soccer players: analyzing the correlates of eating practice. Nutrients. 2014;6(7):2697–717. doi:https://doi.org/10.3390/nu6072697.
- Devlin BL, Leveritt MD, Kingsley M, Belski R. Dietary Intake, Body Composition, and Nutrition Knowledge of Australian Football and Soccer Players: Implications for Sports Nutrition Professionals in Practice. Int J Sport Nutr Exerc Metab. 2017;27(2):130–8. doi:https://doi.org/10.1123/ijsnem.2016-0191.
- Steffl M, Kinkorova I, Kokstejn J, Petr M. Macronutrient Intake in Soccer Players-A Meta-Analysis. Nutrients. 2019;11(6):1305. doi:https://doi.org/10.3390/nu11061305.
- Pedrinelli A, Ejnisman L, Fagotti L, Dvorak J, Tscholl PM. Medications and Nutritional Supplements in Athletes during the 2000, 2004, 2008, and 2012 FIFA Futsal World Cups. Biomed Res Int. 2015;2015:870308 doi:https://doi.org/10.1155/2015/870308.
- Grgic J, Mikulic P. Acute effects of caffeine supplementation on resistance exercise, jumping, and Wingate performance: no influence of habitual caffeine intake. Eur J Sport Sci. 2020; [Epub ahead of print].
- Gonçalves LS, Painelli VS, Yamaguchi G, Oliveira LF, Saunders B, da Silva RP, Maciel E, Artioli GG, Roschel H, Gualano B. Dispelling the myth that habitual caffeine consumption influences the performance response to acute caffeine supplementation. J Appl Physiol (1985)). 2017;123(1):213–20. doi:https://doi.org/10.1152/japplphysiol.00260.2017.
- Irwin C, Desbrow B, Ellis A, O'Keeffe B, Grant G, Leveritt M. Caffeine withdrawal and high-intensity endurance cycling performance. J Sports Sci. 2011; Mar29(5):509–15. doi:https://doi.org/10.1080/02640414.2010.541480.