Soares Enrico Gori, Brown Lee E, Gomes Willy Andrade, Corrêa Daniel Alves, Serpa Érica Paes, da Silva Josinaldo Jarbas, Junior Guanis de Barros Vilela, Fioravanti Gustavo Zorzi, Aoki Marcelo Saldanha, Lopes Charles Ricardo, Marchetti Paulo Henrique
Graduate Program in Science of Human Movement, College of Health Science (FACIS), Methodist University of Piracicaba , Piracicaba, São Paulo, Brazil.
Center for Sport Performance, Department of Kinesiology, California State University , Fullerton, USA.
J Sports Sci Med. 2016 Feb 23;15(1):111-7. eCollection 2016 Mar.
The purpose of this study was to measure the acute effects of pre-exhaustion vs. traditional exercise order on neuromuscular performance and sEMG in trained men. Fourteen young, healthy, resistance trained men (age: 25.5 ± 4.0 years, height: 174.9 ± 4.1 cm, and total body mass: 80.0 ± 11.1 kg) took part of this study. All tests were randomized and counterbalanced for all subjects and experimental conditions. Volunteers attended one session in the laboratory. First, they performed ten repetition maximum (10RM) tests for each exercise (bench press and triceps pushdown) separately. Secondly, they performed all three conditions at 10RM: pre-test (bench press and triceps pushdown, separately), pre-exhaustion (triceps pushdown+bench press, PE) and traditional (bench press+triceps pushdown, TR), and rested 30 minutes between conditions. Results showed that pre-test was significantly greater than PE (p = 0.031) but not different than TR, for total volume load lifted. There was a significant difference between the pre-test and the time-course of lactate measures (p = 0.07). For bench press muscle activity of the pectoralis major, the last repetition was significantly greater than the first repetition (pre-test: p = 0.006, PE: p = 0.016, and TR: p = 0.005). Also, for muscle activity of the triceps brachii, the last repetition was significantly greater than the first repetition (pre-test: p = 0.001, PE: p = 0.005, and TR: p = 0.006). For triceps pushdown, muscle activity of the triceps brachii, the last repetition was significantly greater than the first repetition (pre-test: p = 0.006, PE: p = 0.016, and TR: p = 0.005). For RPE, there were no significant differences between PE and TR (p = 0.15). Our results suggest that exercise order decreases repetitions performed, however, neuromuscular fatigue, lactate, and RPE are not impacted. The lack of difference in total volume load lifted between PE and TR might explain, at least in part, the similar metabolic and perceptual responses. Key pointsThe effects of different exercise order schemes (e.g. PE and TR) on muscle activity and strength performance indicated that similar responses were observed when comparing these schemes.Strength and conditioning coaches should consider these results when prescribing resistance training programs.The primary target (e.g. muscle group) of the training session should trained first, when fatigue level low, in order to maximize training outcomes.
本研究的目的是测量预疲劳与传统运动顺序对训练有素的男性神经肌肉性能和表面肌电图（sEMG）的急性影响。14名年轻、健康、进行抗阻训练的男性（年龄：25.5±4.0岁，身高：174.9±4.1厘米，总体重：80.0±11.1千克）参与了本研究。所有测试针对所有受试者和实验条件进行了随机化和平衡处理。志愿者在实验室参加了一次测试。首先，他们分别对每项运动（卧推和三头肌下压）进行了十次重复最大值（10RM）测试。其次，他们在10RM强度下进行了所有三种条件的测试：预测试（分别进行卧推和三头肌下压）、预疲劳（三头肌下压+卧推，PE）和传统方式（卧推+三头肌下压，TR），且在不同条件之间休息30分钟。结果显示，就举起的总体积负荷而言，预测试显著高于PE（p = 0.031），但与TR无差异。预测试与乳酸测量的时间进程之间存在显著差异（p = 0.07）。对于胸大肌的卧推肌肉活动，最后一次重复显著大于第一次重复（预测试：p = 0.006，PE：p = 0.016，TR：p = 0.005）。此外，对于肱三头肌的肌肉活动，最后一次重复显著大于第一次重复（预测试：p = 0.001，PE：p = 0.005，TR：p = 0.006）。对于三头肌下压，肱三头肌的肌肉活动，最后一次重复显著大于第一次重复（预测试：p = 0.006，PE：p = 0.016，TR：p = 0.005）。对于主观用力程度（RPE），PE和TR之间无显著差异（p = 0.15）。我们的结果表明，运动顺序会减少重复次数，然而，神经肌肉疲劳、乳酸和RPE并未受到影响。PE和TR之间在举起的总体积负荷上缺乏差异可能至少部分解释了相似的代谢和感知反应。要点不同运动顺序方案（如PE和TR）对肌肉活动和力量表现的影响表明，比较这些方案时观察到了相似的反应。力量和体能教练在制定抗阻训练计划时应考虑这些结果。训练课的主要目标（如肌肉群）应在疲劳程度较低时首先进行训练，以最大化训练效果。
