PDF(Pubmed)
Abstract：
Introduction: The aim of this study was to examine the effects of foam rolling (FR) on hamstring muscles stiffness in both non-damaged and exercise-induced muscle damage (EIMD) states, using shear wave ultrasound elastography to measure changes in shear modulus. Methods: Fourteen healthy adults (25.5 ± 4.7 years) participated in a within-participant repeated measures design, with a 2-minute FR intervention applied on one leg and contralateral leg serving as a control. The damaging protocol encompassed maximal eccentric knee extensions performed on an isokinetic dynamometer and the Nordic hamstring exercise, consisting of 3 sets of 10 and 6 repetitions, respectively. Measurement were taken at baseline and then 1 h, 24 h and 48 h after the damaging protocol. Results: The results indicated no significant time × leg interaction for shear modulus in biceps femoris, semimembranosus, and semitendinosus muscles in both non-damaged and damaged states. Notably, there was a significant increase in biceps femoris (p = 0.001; η2 = 0.36) and semitendinosus (p < 0.001; η2 = 0.44) shear modulus after EIMD, but no significant differences were found between the FR and control leg, which was also the case for muscle soreness, range of motion, and passive resistive torque (p = 0.239-0.999 for interactions). Discussion: The absence of significant changes post-FR intervention suggests a limited role of short-duration FR in altering muscle stiffness during recovery from EIMD. These findings contribute to the understanding of FR\'s role in muscle recovery. Although this was not directly investigated, our results suggest a predominance of central mechanisms rather than direct mechanical modifications in muscle properties. This research highlights the necessity for additional investigations to explore how FR interventions influence muscles in different states and to elucidate the mechanisms underlying these influences.
摘要：
简介：这项研究的目的是研究泡沫滚动（FR）对非损伤和运动诱发的肌肉损伤（EIMD）状态下的腿筋肌肉僵硬度的影响。使用剪切波超声弹性成像测量剪切模量的变化。方法:14名健康成年人(25.5±4.7岁)参与参与者内部重复测量设计,对一条腿和对侧腿进行2分钟的FR干预作为对照。破坏性协议包括在等速测力计和北欧腿筋锻炼上进行的最大偏心膝盖伸展，由3组10和6个重复组成，分别。测量是在基线，然后1小时，损伤方案后24小时和48小时。结果：结果表明，股二头肌的剪切模量没有明显的时间×腿相互作用，半膜，和半腱肌处于非损伤和损伤状态。值得注意的是,EIMD后，股二头肌（p=0.001；η2=0.36）和半腱肌（p<0.001；η2=0.44）的剪切模量显着增加，但是FR和对照腿之间没有发现显着差异，肌肉酸痛也是如此，运动范围,和被动阻力矩（相互作用p=0.239-0.999）。讨论：FR干预后没有显着变化，这表明短期FR在从EIMD恢复期间改变肌肉硬度的作用有限。这些发现有助于理解FR在肌肉恢复中的作用。虽然没有直接调查，我们的研究结果表明,中枢机制占主导地位,而不是肌肉特性的直接机械改变.这项研究强调了进一步研究的必要性，以探索FR干预如何影响不同状态的肌肉，并阐明这些影响的潜在机制。
