Antunes Lara, Bezerra Ewertton de S, Sakugawa Raphael L, Dal Pupo Juliano
a Biomechanics Laboratory , Santa Catarina Federal University , Florianopolis , Brazil.
b Human Performance Laboratory , Amazonas Federal University , Manaus , Brazil.
Sports Biomech. 2018 Nov;17(4):502. doi: 10.1080/14763141.2017.1413130. Epub 2018 Jan 26.
The aim of this study was to investigate the effect of cadence on volume load (VLoad) and muscle activity during agonist -antagonist paired sets (APS) in the lower body. Twelve trained men (24.0 ± 3.3 years; 78.3 ± 9.7 kg; 1.77 ± 0.58 m) volunteered to participate in this study. After the 10 maximum repetition test for leg extension and seated leg curl, participants performed three experimental protocols: first protocol (traditional)-three sets of only leg extension (60 bpm); second protocol (fast cadence)-three sets of leg extension, with each set preceded by one set on the seated leg curl with fast cadence (90 bpm); third protocol (slow cadence)-similar to the second, but seated leg curl with slow cadence (40 bpm). The total number of repetitions, VLoad and the electromyography activity for the vastus lateralis, vastus medialis and rectus femoris muscles were recorded. The VLoad was higher during APS than the traditional method, but the cadence (fast or slow) of antagonist exercise did not influence VLoad. Muscle activity of vastus lateralis was higher during traditional protocol; on the other hand, rectus femoris showed higher activity on APS fast cadence protocol, indicating that APS has a different influence on quadriceps components.
本研究旨在探讨在下肢进行主动肌 - 拮抗肌配对训练（APS）时，节奏对容量负荷（VLoad）和肌肉活动的影响。12名受过训练的男性（年龄24.0 ± 3.3岁；体重78.3 ± 9.7千克；身高1.77 ± 0.58米）自愿参与本研究。在进行腿部伸展和坐姿腿弯举的10次最大重复测试后，参与者执行了三个实验方案：第一个方案（传统方案）——仅进行三组腿部伸展（每分钟60次节拍）；第二个方案（快节奏）——三组腿部伸展，每组之前先进行一组快节奏（每分钟90次节拍）的坐姿腿弯举；第三个方案（慢节奏）——与第二个方案类似，但坐姿腿弯举采用慢节奏（每分钟40次节拍）。记录了重复次数总数、VLoad以及股外侧肌、股内侧肌和股直肌的肌电图活动。APS期间的VLoad高于传统方法，但拮抗肌运动的节奏（快或慢）并不影响VLoad。在传统方案中股外侧肌的肌肉活动较高；另一方面，股直肌在APS快节奏方案中表现出较高的活动，表明APS对股四头肌各部分有不同的影响。
