Wax Benjamin, Kavazis Andreas N, Luckett William
a 1 Kinesiology, Mississippi State University , Meridian, Mississippi, USA.
b 2 Kinesiology, Auburn University , Auburn, Alabama, USA.
J Diet Suppl. 2016;13(3):269-82. doi: 10.3109/19390211.2015.1008615. Epub 2015 Feb 12.
Citrulline-malate (CM) has been proposed to provide an ergogenic effect during resistance exercise; however, there is a paucity of research investigating these claims. Therefore, we investigated the impact that CM supplementation would have on repeated bouts of resistance exercise. Fourteen resistance-trained males participated in a randomized, counterbalanced, double-blind study. Subjects were randomly assigned to placebo (PL) or CM (8 g) and performed three sets each of chin-ups, reverse chin-ups, and push-ups to failure. One week later, subjects ingested the other supplement and performed the same protocol. Blood lactate (BLa), heart rate (HR), and blood pressure (BP) were measured preexercise, with BLa measured a second time immediately following the last set, while HR and BP were measured 5 and 10 min postexercise. Citrulline-malate ingestion significantly increased the amount of repetitions performed for each exercise (chin-ups: PL = 28.4 ± 7.1, CM = 32.2 ± 5.6, p = .003; reverse chin-ups: PL = 26.6 ± 5.6, CM = 32.1 ± 7.1, p = .017; push-ups: PL = 89.1 ± 37.4, CM = 97.7 ± 36.1, p < .001). Blood lactate data indicated a time effect (p < .001), but no treatment differences (p = .935). Systolic BP data did not show differences for time (p = .078) or treatment (p = .119). Diastolic BP data did not show differences for time (p = .069), but indicated treatment differences (p = .014) for subjects ingesting CM. Collectively, these findings suggests that CM increased upper-body resistance performance in trained college-age males.
瓜氨酸苹果酸盐（CM）被认为在抗阻训练期间具有增强运动能力的作用；然而，针对这些说法的研究却很少。因此，我们研究了补充CM对重复进行抗阻训练的影响。14名经过抗阻训练的男性参与了一项随机、平衡、双盲研究。受试者被随机分配到安慰剂组（PL）或CM组（8克），并进行引体向上、反握引体向上和俯卧撑三组，每组均进行到力竭。一周后，受试者服用另一种补充剂并执行相同方案。在运动前测量血乳酸（BLa）、心率（HR）和血压（BP），在最后一组运动后立即再次测量BLa，同时在运动后5分钟和10分钟测量HR和BP。摄入瓜氨酸苹果酸盐显著增加了每项运动的重复次数（引体向上：PL组= = 28.4±7.1，CM组= 32.2±5.6，p = 0.003；反握引体向上：PL组= 26.6±5.6，CM组= 32.1±7.1，p = 0.017；俯卧撑：PL组= 89.1±37.4，CM组= 97.7±36.1，p < 0.001）。血乳酸数据显示出时间效应（p < 0.001），但无治疗差异（p = 0.935）。收缩压数据在时间（p = 0.078）或治疗（p = 0.119）方面均未显示出差异。舒张压数据在时间方面未显示出差异（p = 0.069），但表明摄入CM的受试者存在治疗差异（p = 0.014）。总体而言这些结果表明，CM可提高训练有素的大学年龄男性的上身抗阻能力。
