| 林珊珊,郑逸逸,王楚怀.实时超声成像对健康成人多裂肌收缩效率的影响[J].中国康复医学杂志,2022,(4):488~493 |
| 实时超声成像对健康成人多裂肌收缩效率的影响 点此下载全文 |
| 林珊珊 郑逸逸 王楚怀 |
| 中山大学附属第一医院康复医学科，广州，510080 |
| 基金项目：广州市科技计划重点项目（201704020122） |
| DOI：10.3969/j.issn.1001-1242.2022.04.009 |
| 摘要点击次数: 850 |
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| 摘要： |
| 摘要
目的：研究单次多裂肌持续性激活训练过程中，实时超声成像反馈技术对多裂肌激活及收缩效率的影响。
方法：将24例健康受试对象随机分为言语指导组（言语组，n=12）和实时超声反馈组（超声组，n=12），分别予以言语指导和实时超声成像反馈下的改良BST等长收缩训练。比较两组受试者在单次多裂肌持续收缩过程中，实时超声反馈对多裂肌厚度（thickness， Th）、横截面积(cross section area， CSA)的影响。
结果：重复测量方差分析结果显示，两组多裂肌Th、CSA的时间因素、组别因素以及时间与组别的交互作用均有显著性意义（P<0.05），说明随着时间因素的改变多裂肌Th及CSA差异有显著性意义，不同组别的多裂肌Th及CSA差异也有显著性意义，且时间因素的作用随分组的不同而存在差异。事后分析结果显示，在静息状态（T rest）及多裂肌最大收缩时间点（T c-max），两组受试者多裂肌Th、CSA组间比较无显著性意义（P>0.05）；在持续收缩30s（T 30s）时，超声组多裂肌Th、CSA显著优于言语组（P<0.05）。组内比较结果显示，各组Th、CSA在T c-max均优于T rest（P<0.05）；在持续收缩30s时，言语组Th、CSA与T rest相比无显著性意义（P>0.05），超声组Th、CSA在T 30s与T rest相比具有显著性意义（P<0.05）。
结论：实时超声反馈不会增加多裂肌初始激活最大收缩程度，但超声成像可提供实时、持续的动态视觉反馈，有利于受试者在持续收缩过程中尽可能保持多裂肌最大收缩幅度，从而提高收缩效率、改善训练效果。 |
| 关键词：实时超声成像 多裂肌 收缩厚度 横截面积 |
| Effects of real-time ultrasound imaging feedback on thickness and cross section area of contractive multifidus in healthy subjects Download Fulltext |
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| Department of Rehabilitation Medicine， the First Affiliated Hospital， Sun Yat-sen University， Guangzhou， 510080 |
| Fund Project: |
| Abstract: |
| Abstract
Objective： To investigate the influence of real-time ultrasound imaging feedback on thickness and volume of contractive multifidus after the single sustaining multifidus activation training.
Method： Twenty-four healthy subjects were randomly divided into a verbal instruction group (verbal group， VG， n=12) and a real-time ultrasound feedback group (ultrasound group， UG， n=12)， and then underwent a single 30 seconds persistent multifidus activation training via verbal guidance with or without real-time ultrasound imaging feedback. The begining, maximum and ending thickness (Th)，and cross section area (CSA) of the multifidus of two groups were taken with ultrasoungraphy.
Result： The initial Th and CSA of multifidus between the two groups had no difference. The maxmium Th and CSA of both groups increased (P<0.05) and no difference between two groups. At the end of 30s activation, both Th and CSA decreased. The ending Th and CSA in UG group were still more than the initials(P<0.05), but it is not true for VG group.
Conclusion： The real-time ultrasound imaging feedback does not increase the initial maximum contraction degree of the multifidus. But during the 30 seconds persistent contraction process， the real-time and continuous dynamic visual feedback provided by the ultrasound imaging is beneficial to the subjects to maintain the maximum contraction extent of the multifidus as much as possible， which is helpful to improve the contraction efficiency and training effect. |
| Keywords:real-time ultrasound imaging multifidus contraction thickness cross section area |
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