Effects of dry needling on mechanical and contractile properties of the upper trapezius with latent myofascial trigger points: A randomized controlled trial,Musculoskeletal Science and Practice

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Effects of dry needling on mechanical and contractile properties of the upper trapezius with latent myofascial trigger points: A randomized controlled trial
Musculoskeletal Science and Practice ( IF 2.3 ) Pub Date : 2021-09-03 , DOI: 10.1016/j.msksp.2021.102456
J Sánchez-Infante ₁ , A Bravo-Sánchez ₂ , F Jiménez ₂ , J Abián-Vicén ₂

Affiliation

Background

Latent trigger point (LTrP) can cause motor dysfunction and disturb normal patterns of motor recruitment.

Objective

To analyze the effects of DN in the upper trapezius (UT) LTrP on pain and the mechanical and contractile properties of the muscle.

Design

A randomized, double-blinded, parallel-group-trial.

Methods

Fifty healthy volunteers with LTrPs in the UT were randomly divided into a DN-group (n = 26) and a Sham-DN-group (n = 24) and received one session of DN or placebo treatment. Mechanical and contractile properties of the muscle and pressure pain perception (PPP) were evaluated before treatment and in a 30min, 24 h and 72 h follow-up after treatment.

Results

In the mechanical properties, the DN-group showed lower values than the Sham-DN-group for dynamic stiffness at 72 h (p = 0.04). The DN-group showed lower values for dynamic stiffness at 72 h from baseline (278.74 ± 38.40 to 261.54 ± 33.64 N/m; p = 0.01) and for tone at 72 h from 30min (16.62 ± 1.27 to 15.88 ± 1.31 Hz; p = 0.01). In the contractile properties, the DN-group showed higher values for maximal radial displacement (Dm) of the muscle belly at 72 h from baseline (5.38 ± 1.67 to 6.13 ± 1.70 mm; p = 0.04), higher values for contraction time at 30min (28.53 ± 8.80 s; p = 0.03) and lower ones at 72 h (24.74 ± 4.36 s; p = 0.04) from baseline (26.97 ± 6.63 s). The DN-group showed a decrease of PPP from baseline to 72 h after treatment (5.16 ± 1.33 to 4.02 ± 0.97 mm; p < 0.01).

Conclusion

The application of DN in healthy volunteers over LTrPs in the UT decreased dynamic stiffness, tone and contraction time and increased Dm at 72 h after treatment. Additionally, the PPP showed a decrease at 72 h after needling.

ClinicalTrials.gov

NCT04466813

中文翻译：

干针法对具有潜在肌筋膜触发点的上斜方肌的力学和收缩特性的影响：一项随机对照试验

背景

潜在触发点 (LTrP) 可导致运动功能障碍并扰乱运动募集的正常模式。

客观的

分析上斜方肌 (UT) LTrP 中的 DN 对疼痛以及肌肉的机械和收缩特性的影响。

设计

一项随机、双盲、平行组试验。

方法

50 名在 UT 中患有 LTrP 的健康志愿者被随机分为 DN 组（n = 26）和 Sham-DN 组（n = 24），并接受一次 DN 或安慰剂治疗。在治疗前以及治疗后 30 分钟、24 小时和 72 小时的随访中评估肌肉的机械和收缩特性以及压力痛觉 (PPP)。

结果

在机械性能方面，DN 组的 72 小时动态刚度值低于 Sham-DN 组（p = 0.04）。DN 组在基线后 72 小时的动态刚度值较低（278.74 ± 38.40 至 261.54 ± 33.64 N/m；p = 0.01），从 30 分钟开始 72 小时的音调（16.62 ± 1.27 至 15.88 ± 1.31 Hz；p = 0.01)。在收缩特性方面，DN 组在基线 72 小时时肌腹的最大径向位移 (Dm) 值较高（5.38 ± 1.67 至 6.13 ± 1.70 mm；p = 0.04），30 分钟时的收缩时间值较高(28.53 ± 8.80 s; p = 0.03) 和基线 (26.97 ± 6.63 s) 后 72 小时 (24.74 ± 4.36 s; p = 0.04) 的更低值。DN 组显示 PPP 从基线到治疗后 72 小时下降（5.16 ± 1.33 至 4.02 ± 0.97 mm；p < 0.01）。