肌筋膜触发点干针疗法对健康受试者肌肉僵硬和运动神经元兴奋性的影响。
The effect of dry needling of myofascial trigger points on muscle stiffness and motoneuron excitability in healthy subjects.
机构信息
iPhysio Research Group, Universidad San Jorge, Zaragoza, Spain.
Toledo Physiotherapy Research Group (GIFTO), Faculty of Physiotherapy and Nursing, Universidad de Castilla-La Mancha, Toledo, Spain.
出版信息
Acupunct Med. 2022 Feb;40(1):24-33. doi: 10.1177/09645284211027579. Epub 2021 Jul 20.
BACKGROUND
Myofascial trigger points (MTrPs) are hypersensitive nodules in a taut band (TB) of skeletal muscle. Dry needling (DN) is an invasive technique recommended for the treatment of MTrPs. However, to our knowledge, no studies have investigated the influence of the DN technique on modification of muscle stiffness and neurophysiological properties of MTrPs.
OBJECTIVE
The objective was to examine the effect of DN on muscle stiffness and motoneuron excitability of a latent medial MTrP (nodule and TB) of the soleus muscle in non-injured subjects.
METHODS
A double-blinded randomised controlled trial of 46 subjects with latent medial MTrPs of the soleus was conducted, in which all received one session of DN. The intervention group (n = 23) were subjected to DN into the MTrP (the nodule), while the control group (n = 23) were subjected to DN into the TB. Assessment was carried out at baseline (pre-test), after the intervention (post-test) and 1 week after the intervention (follow-up). Biomechanical variables (muscle resistive force at 10°/s and 180°/s, muscle extensibility and strength), as measured with an isokinetic dynamometer, and neurophysiological variables (H-reflex), were recorded.
RESULTS
There were no statistically significant differences in biomechanical or neurophysiological assessments between groups. Considering the intra-group analysis, subjects in the intervention group exhibited increased maximal isometric voluntary force to ankle plantarflexion (MIVF) at both post-intervention and follow-up assessment (p < 0.0125; 0.2 < d < 0.5), while no changes were found in the control group.
CONCLUSION
One session of DN targeting latent MTrPs did not change muscle stiffness, muscle extensibility or motoneuron excitability. Further research on subjects with muscle tone disorders should be considered to better address the impact of DN on muscle tone.
TRIAL REGISTRATION NUMBER
NCT02575586 (ClinicalTrials.gov).
背景
肌筋膜触发点（MTrP）是骨骼肌紧张带（TB）中的敏感结节。干针（DN）是一种推荐用于治疗 MTrP 的侵入性技术。然而，据我们所知，尚无研究调查 DN 技术对 MTrP 肌肉僵硬和神经生理特性改变的影响。
目的
本研究旨在检查 DN 对非损伤受试者腓肠肌隐性内侧 MTrP（结节和 TB）的肌肉僵硬和运动神经元兴奋性的影响。
方法
对 46 例腓肠肌隐性内侧 MTrP 的受试者进行了一项双盲随机对照试验，所有受试者均接受了一次 DN 治疗。干预组（n=23）接受 DN 至 MTrP（结节），而对照组（n=23）接受 DN 至 TB。评估在基线（预测试）、干预后（后测试）和干预后 1 周（随访）进行。使用等速测力计测量生物力学变量（10°/s 和 180°/s 时的肌肉阻力、肌肉伸展性和力量）和神经生理变量（H 反射）。
结果
组间生物力学或神经生理评估无统计学差异。考虑到组内分析，干预组受试者在干预后和随访评估时的踝关节跖屈最大等长自愿力（MIVF）均增加（p<0.0125；0.2<d<0.5），而对照组则没有变化。
结论
针对隐性 MTrP 的一次 DN 治疗并未改变肌肉僵硬、肌肉伸展性或运动神经元兴奋性。应考虑对肌张力障碍患者进行进一步研究，以更好地了解 DN 对肌张力的影响。
试验注册号
NCT02575586（ClinicalTrials.gov）。
Zotero 插件