Exercise Science Research Center, University of Arkansas, Fayetteville, AR, USA.
Neurotrack Technologies, Inc., Redwood City, CA, USA.
Eur J Sport Sci. 2021 Jan;21(1):77-83. doi: 10.1080/17461391.2020.1722757. Epub 2020 Feb 18.
Citrulline-malate (CM) purportedly increases exercise performance through increased nitric oxide production. The effects of CM on muscular strength performance are well-documented; however, the benefits of CM on aerobic and anaerobic biking performance are not well researched. Therefore, the present investigation examined the acute CM supplementation effects on aerobic and anaerobic cycling performance in recreationally active males. : 28 recreationally active males (20.9 ± 2.8 years) completed randomized, double-blind, crossover trials consuming CM (12g dextrose + 8g CM) or a placebo (12g dextrose). Participants performed an aerobic cycling protocol (time-to-exhaustion [TTE]), followed by a subsequent 30-second Wingate cycling test, 60-minutes after supplement consumption. : Dependent -tests showed no significant differences ( > 0.05) for TTE (PLA: 315.4 s ± 137.7 s; CM: 314.1 s ± 107.1 s) and Total Work Completed (TWC) (PLA: 74.7 ± 34.1 kilojoules (kJ); CM: 74.1 ± 26.4 kJ) during the aerobic cycling protocol. Dependent -tests also showed no significant differences ( > 0.05) for mean watts (PLA: 586.1 ± 87.7 Watts (W); CM: 588.0 ± 93.0 W), peak watts (PLA: 773.0 ± 136.7 W; CM: 786.7 ± 133.0 W), and fatigue index (PLA: 12.9 ± 6.4 FI; CM: 14.3 ± 7.2 FI) during the Wingate protocol. Repeated-measures ANOVA results indicated a significant effect between each 5 s interval ( < 0.001), but no differences were observed between trials ( > 0.05). : Acute CM supplementation in recreationally active males provides no ergogenic benefit in aerobic cycling performance followed by an anaerobic cycling test.
瓜氨酸苹果酸盐（CM）据称通过增加一氧化氮的产生来提高运动表现。CM 对肌肉力量表现的影响已有充分的记录；然而，CM 对有氧和无氧自行车运动表现的益处尚未得到充分研究。因此，本研究调查了在有运动习惯的男性中，急性 CM 补充对有氧和无氧自行车运动表现的影响。
28 名有运动习惯的男性（20.9±2.8 岁）完成了随机、双盲、交叉试验，分别摄入 CM（12g 葡萄糖+8g CM）或安慰剂（12g 葡萄糖）。参与者进行了有氧自行车测试（力竭时间 [TTE]），然后在补充剂摄入 60 分钟后进行随后的 30 秒 Wingate 自行车测试。
依赖于测试显示，在有氧自行车测试中 TTE（PLA：315.4 s±137.7 s；CM：314.1 s±107.1 s）和总做功完成量（TWC）（PLA：74.7±34.1 千焦耳（kJ）；CM：74.1±26.4 kJ）没有显著差异（>0.05）。依赖于测试也显示，在平均瓦特数（PLA：586.1±87.7 瓦特（W）；CM：588.0±93.0 W）、峰值瓦特数（PLA：773.0±136.7 W；CM：786.7±133.0 W）和疲劳指数（PLA：12.9±6.4 FI；CM：14.3±7.2 FI）方面，在 Wingate 协议中也没有显著差异（>0.05）。重复测量方差分析结果表明，在每个 5 秒间隔之间存在显著影响（<0.001），但在试验之间没有观察到差异（>0.05）。
急性 CM 补充在有运动习惯的男性中，在进行无氧自行车测试后，对有氧自行车运动表现没有提供任何的增益效果。
