Acute effect of intra-set static stretching on antagonists versus passive interval on the performance of maximum repetitions of agonists in leg extension machine

Abstract The aim of this study was to investigate the acute effect of intra-set antagonist static stretching (hamstrings) on the performance of maximum repetitions of knee extensors adopting muscle endurance training zone. The sample consisted of 15 healthy male volunteers with experience in strength training (23.7 ± 4.3 years, 81.9 ± 15.0 kg, 1.8 ± 0.1 m). Two experimental protocols were conducted: protocol without static stretching (PT) and antagonist stretching protocol (PAA) in the knee extension exercise. The results showed that there was no difference between protocols or interactions between protocols and sets in maximum repetitions performance (PT, set1 – 21.3 ± 3.4; set2 – 16.1 ± 1.9; set3 – 13.5 ± 1.3 / PAA, set1 – 21.0 ± 2.0; set2 – 16.7 ± 2.6; set3 – 13.7 ± 2.2) (p ≤ 0.05) (p ≤ 0.05). Therefore, antagonist static stretching does not influence performance of maximum repetitions of knee extensors over multiple sets focused on muscle endurance.

摘要 本研究旨在探讨组内拮抗肌静态拉伸（腘绳肌，hamstrings）对采用肌肉耐力训练区间的膝伸肌最大重复次数表现的急性影响。研究样本包含15名具备力量训练经验的健康男性志愿者，年龄为23.7±4.3岁，体重81.9±15.0kg，身高1.8±0.1m。本研究设置两种实验方案：膝伸练习中的无静态拉伸方案（PT）与拮抗肌拉伸方案（PAA）。结果显示，两组方案间，以及方案与组数的交互作用对最大重复次数表现均无显著差异（PT组：第1组21.3±3.4；第2组16.1±1.9；第3组13.5±1.3；PAA组：第1组21.0±2.0；第2组16.7±2.6；第3组13.7±2.2）（p≤0.05）（p≤0.05）。因此，拮抗肌静态拉伸不会对多组聚焦肌肉耐力训练的膝伸肌最大重复次数表现产生影响。