Human Performance Laboratory, Department of Health and Kinesiology, Texas A&M University-Kingsville, Kingsville, Texas.
J Strength Cond Res. 2019 Sep;33(9):2464-2470. doi: 10.1519/JSC.0000000000002356.
Farney, TM, Bliss, MV, Hearon, CM, and Salazar, DA. The effect of citrulline malate supplementation on muscle fatigue among healthy participants. J Strength Cond Res 33(9): 2464-2470, 2019-The focus of the investigation was to examine the effects of citrulline malate (CM) on muscular fatigue in healthy, recreationally trained participants. Twelve participants (men = 6 and women = 6) (24.1 ± 3.9 years) visited the laboratory on 3 separate days, all separated by 1 week. Each visit consisted of consuming 1 of 3 treatments: placebo, CM (8 g), and control in which no drink mixture was consumed. For each day of testing, participants consumed assigned treatment and performed 1 high-intensity exercise trial consisting of squats, lunge jumps, squat jumps, and lateral jumps. Participants performed the exercises in the listed order, which was designated as 1 round. Each participant performed 3 rounds, with the work-to-rest ratio being 20 seconds of work and 30 seconds of rest. A 1-minute rest was given between rounds. A pre/post-exercise isokinetic leg extension test was performed to measure for peak power, peak torque, and rate of fatigue. In addition, blood lactate was obtained pre/post-exercise. There were no treatment or interaction effects (p > 0.05) for peak torque, peak power, rate of fatigue, or blood lactate accumulation. However, there was a statistical significant decrease from pre/post-exercise for peak torque (p = 0.003), peak power (p = 0.003), and rate of fatigue (p = 0.001). In addition, lactate accumulation did increase significantly from pre/post-exercise (p = 0.0001). Finally, neither total work nor final heart rate was statistically significant between the treatments (p > 0.05). Citrulline malate was not effective in improving performance or alleviating fatigue after a high-intensity exercise session.
法尼、特米、布利斯、马克、希伦和萨拉扎尔。瓜氨酸苹果酸补充剂对健康参与者肌肉疲劳的影响。J 力量与调节研究 33(9)：2464-2470，2019-研究的重点是研究瓜氨酸苹果酸（CM）对健康、有规律训练的参与者肌肉疲劳的影响。12 名参与者（男性 6 名，女性 6 名）（24.1±3.9 岁）在 3 个不同的日子分别访问了实验室，每个日子相隔 1 周。每次访问包括服用 3 种治疗方法中的 1 种：安慰剂、CM（8 克）和对照，其中不饮用混合液。对于测试的每一天，参与者都服用指定的治疗方法，并进行 1 次高强度运动试验，包括深蹲、弓步跳、深蹲跳和侧跳。参与者按照列出的顺序进行练习，这被指定为 1 轮。每个参与者进行 3 轮，工作与休息的比例为 20 秒工作和 30 秒休息。每轮之间休息 1 分钟。进行运动前后等速腿部伸展测试，以测量峰值功率、峰值扭矩和疲劳率。此外，还在运动前后测量血乳酸。在峰值扭矩、峰值功率、疲劳率或血乳酸积累方面，没有治疗或交互作用的影响（p>0.05）。然而，从运动前后来看，峰值扭矩（p=0.003）、峰值功率（p=0.003）和疲劳率（p=0.001）都有统计学上的显著下降。此外，从运动前后来看，乳酸积累显著增加（p=0.0001）。最后，在治疗之间，总工作量和最终心率都没有统计学意义（p>0.05）。瓜氨酸苹果酸在高强度运动后不能提高表现或缓解疲劳。
