Acute effects of dynamic stretching on the mechanical properties of the triceps surae muscles assessed using shear wave ultrasound elastography.

IF 2.1 4区医学 Q3 RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING

Journal of Medical Ultrasonics Pub Date : 2025-10-09 DOI:10.1007/s10396-025-01589-2

Kensuke Oba, Michito Murayama, Sanae Kaga, Mina Samukawa

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引用次数: 0

Abstract

Purpose: Dynamic stretching (DS), characterized by repeated movements through the joint range of motion via antagonist muscle contraction, is thought to reduce muscle stiffness through mechanisms such as reciprocal inhibition. However, whether DS effectively decreases muscle stiffness remains unclear. This study aimed to investigate the acute effects of DS on triceps surae muscle stiffness using shear wave elastography.

Methods: Sixteen healthy young adults performed both 120-s DS and control (no stretching) tasks. Shear wave velocities of the medial gastrocnemius (MG), lateral gastrocnemius (LG), and soleus (SOL) muscles were measured as indicators of muscle stiffness before and after DS.

Results: Our findings indicated that DS significantly reduced the shear wave velocity in the MG. However, no significant changes were observed in the shear wave velocities of the LG and SOL.

Conclusion: DS effectively decreased MG stiffness, with no observed effects in the LG or SOL. These findings highlight inter-muscular variability in response to DS and suggest that DS may be particularly beneficial for targeting stiffness in the MG of the triceps surae muscles.

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动态拉伸对三头肌表面肌肉力学性能的急性影响，采用剪切波超声弹性成像评估。

目的：动态拉伸（DS）的特点是通过拮抗剂肌肉收缩在关节运动范围内重复运动，被认为通过相互抑制等机制降低肌肉僵硬。然而，退行性椎体滑移是否能有效降低肌肉僵硬仍不清楚。本研究旨在利用横波弹性成像技术研究退行性椎体滑移对肱三头肌表面肌肉僵硬度的急性影响。方法：16名健康青年同时执行120-s DS和对照组（无拉伸）任务。测量腓肠肌内侧（MG）、腓肠肌外侧（LG）和比目鱼肌（SOL）的横波速度作为退行性椎体滑移前后肌肉僵硬度的指标。结果：我们的研究结果表明，DS显著降低了MG的横波速度。然而，在LG和SOL的横波速度上没有观察到明显的变化。结论：DS有效地降低了MG的僵硬，而LG或SOL没有观察到任何影响。这些发现强调了DS响应的肌肉间变异性，并表明DS可能对三头肌表面肌的MG的僵硬特别有益。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Medical Ultrasonics 医学-核医学

CiteScore

3.30

自引率

11.10%

发文量

102

审稿时长

>12 weeks

期刊介绍： The Journal of Medical Ultrasonics is the official journal of the Japan Society of Ultrasonics in Medicine. The main purpose of the journal is to provide forum for the publication of papers documenting recent advances and new developments in the entire field of ultrasound in medicine and biology, encompassing both the medical and the engineering aspects of the science.The journal welcomes original articles, review articles, images, and letters to the editor.The journal also provides state-of-the-art information such as announcements from the boards and the committees of the society.