Smith JohnEric W, Krings Ben M, Peterson Timothy J, Rountree Jaden A, Zak Roksana B, McAllister Matthew J
Department of Kinesiology, Mississippi State University, Mississippi State, MS 39762, USA.
School of Health and Kinesiology, University of Nebraska-Omaha, Omaha, NE 68182, USA.
Sports (Basel). 2017 Jun 10;5(2):36. doi: 10.3390/sports5020036.
The purpose of this study was to investigate the impact of ingesting an amino acid-electrolyte (AAE) beverage during upper body resistance exercise on transient muscle hypertrophy, exercise performance, markers of muscle damage, and recovery. Participants ( = 15) performed three sets of six repetitions-bench press, lat pull down, incline press, and seated row-followed by three sets of eight repetitions at 75% of the estimated 1 repetition maximum-triceps kickback, hammer curl, triceps push down, and preacher curl-with 90 s of rest between sets. The final set of the push down/preacher curl was performed to failure. Prior to and immediately post-exercise, as well as 24, 48, and 72 h post exercise, cross-sectional muscle thickness was measured. Blood samples were collected prior to exercise, as well as 24, 48, and 72 h post-exercise for serum creatine kinase (CK) analysis. No treatment effect was found for muscle cross-sectional area, repetitions to failure, or serum CK. A main effect ( < 0.001) was observed in the change in serum CK levels in the days following the resistance exercise session. The findings of this study suggest that the acute ingestion of a AAE beverage does not alter acute muscle thickness, performance, perceived soreness and weakness, or markers of muscle damage.
本研究的目的是调查在上半身抗阻运动期间摄入氨基酸 - 电解质（AAE）饮料对瞬时肌肉肥大、运动表现、肌肉损伤标志物和恢复的影响。参与者（n = 15）进行三组，每组六次重复的卧推、下拉、上斜推举和坐姿划船，然后以估计的1次最大重复量的75%进行三组，每组八次重复的三头肌后伸、锤式弯举、三头肌下压和牧师椅弯举，组间休息90秒。下压/牧师椅弯举的最后一组进行至力竭。在运动前、运动后即刻以及运动后24、48和72小时测量肌肉横截面积。在运动前以及运动后24、48和72小时采集血样用于血清肌酸激酶（CK）分析。未发现肌肉横截面积、力竭重复次数或血清CK有治疗效果。在抗阻训练后的几天内，观察到血清CK水平变化有主效应（p < 0.001）。本研究结果表明，急性摄入AAE饮料不会改变急性肌肉厚度、运动表现、感知到的酸痛和无力或肌肉损伤标志物。
