pazouki, pourya, Daneshjoo, Abdolrasoul, Hosseini, Masoumeh. “The effect of caffeine consumption on some factors of physical fitness and skills of young footballers.” Journal of Sports Physiology and Athletic Conditioning, vol. 2, no. 6, 2022, pp. 54-67. 10.61186/jspac.38720.2.6.54