PDF(Pubmed)
Abstract：
This randomized, double-blinded, experimental study investigated the effects of a four-week daily pre-workout supplementation (200 mg caffeine, 3.3 g creatine monohydrate, 3.2 g β-alanine, 6 g citrulline malate, and 5 g BCAA) vs. placebo (isocaloric maltodextrin) on anaerobic (jumping, sprinting, agility, and the running-based anaerobic sprint test: RAST) and aerobic (Yo-Yo intermittent recovery test level 1) performance, as well as on body composition and selective muscle damage/health-related blood markers in well-trained basketball players during the in-season period. Eighteen basketball players (age: 24.4 ± 6.3 years, height: 185.7 ± 8.0 cm, weight: 85.7 ± 12.8 kg, body fat: 16.5 ± 4.2%) were randomly assigned into two groups: pre-workout supplement (PWS, n = 10) or placebo (PL, n = 8). PWS consumption increased aerobic performance (PWS: 8 ± 6%; PL: -2 ± 6%; p = 0.004) compared to PL. A significant decrease was observed in peak (F = 7.0; p = 0.017), average (F = 10.7; p = 0.005), and minimum power (F = 5.1; p = 0.039) following 4 weeks of supplementation in both groups. No other significant changes were observed between groups (p > 0.05). In conclusion, the consumption of the current PWS over a four-week period appears to positively influence the aerobic performance of well-trained basketball players during the in-season period. However, it does not appear to mitigate the observed decline in anaerobic power, nor does it affect performance in jumping, sprinting, and agility, or alter body composition or selective muscle damage/health-related blood markers.
摘要：
这个随机的，双盲,实验研究调查了每天锻炼前补充四周的效果(200毫克咖啡因，3.3g肌酸一水合物，3.2gβ-丙氨酸，6克瓜氨酸苹果酸，和5gBCAA）与安慰剂（等热量麦芽糊精）在厌氧（跳跃，冲刺,敏捷性,和基于运行的无氧冲刺测试：RAST）和有氧（Yo-Yo间歇恢复测试1级）性能，以及在赛季中训练有素的篮球运动员的身体成分和选择性肌肉损伤/与健康相关的血液标记。篮球运动员18名(年龄:24.4±6.3岁,身高：185.7±8.0厘米，重量：85.7±12.8kg,体脂：16.5±4.2%）被随机分为两组：锻炼前补充剂（PWS，n=10）或安慰剂（PL，n=8)。与PL相比，PWS消耗增加了有氧性能（PWS：8±6％；PL：-2±6％；p=0.004）。峰显著下降(F=7.0;p=0.017),平均值(F=10.7；p=0.005)，和最小功率（F=5.1;p=0.039）补充4周后，两组。组间无其他显著变化(p>0.05)。总之,当前PWS在四个星期内的消耗似乎对赛季中训练有素的篮球运动员的有氧表现产生了积极影响。然而,它似乎并不能减轻观察到的无氧功率下降，也不影响跳跃的表现，冲刺,和敏捷性，或改变身体成分或选择性肌肉损伤/健康相关的血液标记。
