The final phase is critical for the soccer sport. The final phase, which is principally defined as the final 10 minutes of the second half, during which the athletes could suffer great performance loss [1]. That is adjusted supplementation with ergogenic supplements becomes necessary for improve the performance of soccer athletes on the pitch until these final decisive phases. The main and most studied supplements considered ergogenic by the scientific literature include creatine, caffeine, sodium bicarbonate, beta-alanine, and nitrate [2].

For creatine supplementation, a double-blind, controlled study with 19 soccer players, supplemented with creatine (0.3 g. kg^-1 BW. d^-1) for 14 days and concluded significant improvements in power tests using 30s of Wingate anaerobic test [3]. This because the creatine supplementation may promote ATP resynthesis and subsequent improvements in the performance of soccer players [4]. The caffeine used one hour before a match in 12 soccer players in doses 6 mg. kg^-1 BW tested by a controlled, crossover and, randomized study, was able improve time to hit a penalty and performance in the countermovement jump [5]. It happens cause the caffeine supplementation can improves performance by attenuating the potassium output of muscle cells and also causing alert effect due to antagonism of caffeine to adenosine receptors in the central nervous system [4].

The sodium bicarbonate was able improve about 70% on the running high speed (17 to 21 km. h^-1) of 10 soccer players after a Yo-Yo test with supplementation 0.4 g. kg^-1 BW of 90 to 120 minutes before the start of the tests [6]. 17 soccer players, recruited for a double-blind controlled study, supplemented 3.2 g. d^-1 of beta-alanine provided in the form of 800 mg sustained-release tablets divided four times a day for 12 weeks (at the beginning and middle of the season) and obtained significant improvements in Yo-Yo test performance [7]. It becomes important because during the high-intensity exercise, a soccer match for example, there is an increase in blood lactate concentration, a product of the glycolytic pathway used to provide energy and maintain the intensity of the exercise and the sodium bicarbonate supplementation acts such a buffering agent for to attenuates the decline in muscle pH [4].

To test for nitrate, a randomized, double-blind cross-over study, recruited 32 male soccer players (age: 23 ± 1 years, height: 181 ± 1 m, weight: 77 ± 1 kg, playing experience: 15.2 ± 0.5 years) to test for six days the intake of nitrate-rich (140 mL; ~800 mg nitrate/day) or a nitrate-depleted beetroot juice 3 hours before the Yo-Yo test, which can improve their performance by 3.4 ± 1.3% [8]. The high bioavailability of nitric oxide from nitrate such a ergogenic supplement increases release of calcium (Ca²⁺) improving contractile function of the skeletal muscle helping recovery of phosphocreatine reserves to prevents depletion during high intensity efforts improving also the release and reuptake of calcium in the sarcoplasmic reticulum [4].

Hence, Elite soccer players benefit from the use of ergogenic supplements to improve their performance on the pitch, and the recommendation of creatine, caffeine, beta-alanine, nitrate, and sodium bicarbonate demonstrated on Table 1 may to be an important alternative for this sport.