Ergogenic strategies have been studied to alleviate muscle fatigue and improve sports performance. Sodium bicarbonate (NaHCO₃) has improved repeated sprint performance in adult team-sports players, but the effect for adolescents is unknown. The aim of the present study was to evaluate the effect of NaHCO₃ supplementation on repeated sprint performance in semiprofessional adolescent soccer players. In a double-blind, placebo-controlled, crossover trial, 15 male semiprofessional adolescent soccer players (15 ± 1 years; body fat 10.7 ± 1.3%) ingested NaHCO₃ or a placebo (sodium chloride) 90 min before performing the running anaerobic sprint test (RAST). A countermovement jump was performed before and after the RAST, and ratings of perceived exertion, blood parameters (potential hydrogen and bicarbonate concentration), and fatigue index were also evaluated. Supplementation with NaHCO₃ promoted alkalosis, as demonstrated by the increase from the baseline to preexercise, compared with the placebo (potential hydrogen: +0.07 ± 0.01 vs. −0.00 ± 0.01, p < .001 and bicarbonate: +3.44 ± 0.38 vs. −1.45 ± 0.31 mmol/L, p < .001); however, this change did not translate into an improvement in RAST total time (32.12 ± 0.30 vs. 33.31 ± 0.41 s, p = .553); fatigue index (5.44 ± 0.64 vs. 6.28 ± 0.64 W/s, p = .263); ratings of perceived exertion (7.60 ± 0.33 vs. 7.80 ± 0.10 units, p = .525); countermovement jump pre-RAST (32.21 ± 3.35 vs. 32.05 ± 3.51 cm, p = .383); or countermovement jump post-RAST (31.70 ± 0.78 vs. 32.74 ± 1.11 cm, p = .696). Acute NaHCO₃ supplementation did not reduce muscle fatigue or improve RAST performance in semiprofessional adolescent soccer players. More work assessing supplementation in this age group is required to increase understanding in the area.

已经研究了增效策略以减轻肌肉疲劳并提高运动表现。碳酸氢钠 (NaHCO ₃ ) 改善了成年团队运动运动员的重复冲刺表现，但对青少年的影响尚不清楚。本研究的目的是评估补充NaHCO ₃对半职业青少年足球运动员重复冲刺表现的影响。在双盲，安慰剂对照，交叉试验，15名雄性半专业青少年足球运动员;摄取的NaHCO（15±1年身体脂肪10.7±1.3％）₃或在进行无氧冲刺测试 (RAST) 前 90 分钟服用安慰剂（氯化钠）。在 RAST 之前和之后进行了反向运动跳跃，并且还评估了感知运动、血液参数（潜在的氢和碳酸氢盐浓度）和疲劳指数的评级。与安慰剂相比，补充 NaHCO ₃促进了碱中毒，从基线到运动前的增加证明了这一点（潜在氢：+0.07 ± 0.01 vs. -0.00 ± 0.01，p  < .001 和碳酸氢盐：+3.44 ± 0.38 vs. -1.45 ± 0.31 毫摩尔/升，p  < .001)；然而，这种变化并没有转化为 RAST 总时间的改善（32.12 ± 0.30 vs. 33.31 ± 0.41 s，p = .553); 疲劳指数（5.44 ± 0.64 vs. 6.28 ± 0.64 W/s，p  = .263）；感知劳累评分（7.60 ± 0.33 与 7.80 ± 0.10 单位，p  = .525）；RAST前的 反向运动跳跃（32.21 ± 3.35 vs. 32.05 ± 3.51 cm，p = .383）；或 RAST 后的 反向运动跳跃（31.70 ± 0.78 vs. 32.74 ± 1.11 cm，p = .696）。急性 NaHCO ₃补充剂并未减少半职业青少年足球运动员的肌肉疲劳或改善 RAST 表现。需要更多的工作来评估这个年龄段的补充剂，以增加对该地区的了解。