An MRI investigation into the function of the transversus abdominis muscle during "drawing-in" of the abdominal wall
An MRI investigation into the function of the transversus abdominis muscle during "drawing-in" of the abdominal wall
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DOI：
10.1097/01.brs.0000202740.86338.df
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发表时间：
2006-03-15
期刊：
影响因子：
3
通讯作者：
Richardson, C
中科院分区：
文献类型：
--
作者：
Hides, J;Wilson, S;Richardson, C
研究设计.在腹壁“拉入”过程中测量腹肌的双模式试验。1)利用磁共振成像（MRI）研究腹壁牵拉过程中双侧腹横肌的功能。2)验证在腹壁牵拉过程中使用实时超声成像测量腹部深部肌肉。背景资料总结。以前的研究表明，腹部深层肌肉，腹横肌，在脊柱的支持和保护，并提供证据表明，训练这种肌肉是重要的腰痛康复。腹横肌最重要的作用之一是“拉入”腹壁，并且该作用已被证明可使骶髂关节弯曲。据推测，在一个提请，腹横肌形成一个深肌筋膜的“紧身衣”，MRI可以用来查看这个紧身衣，并验证其作用机制的腰盆区。13名年龄为21.3 +/- 2.1岁的健康无症状男性精英板球运动员在腹壁上画画时使用MRI和超声成像进行成像。采用MRI和超声测量腹横肌和内斜肌的厚度以及腹前筋膜的滑动。采用MRI测量全腹横截面积（CSA）。MRI结果显示，由于牵拉，腹横肌厚度明显增加（P < 0.001），内斜肌厚度明显增加（P < 0.001）。躯干CSA明显降低（P < 0.001）。左侧腹前筋膜的平均滑动（+/- SD）为1.54 +/- 0.38 cm，右侧为1.48 +/- 0.35 cm。超声测量腹横肌和腹内斜肌的肌肉厚度，以及筋膜滑动，与MRI测量结果相关（组间相关系数为0.78 ~ 0.95）。MRI结果表明，在牵引动作期间，腹横肌双侧收缩以形成肌肉筋膜带，该肌肉筋膜带看起来收紧（像紧身胸衣）并且最有可能改善腰骨盆区域的稳定性。实时超声成像也可用于测量在牵引动作期间腹横肌的变化。
Study Design. An operator blinded dual modality trial of measurement of the abdominal muscles during "drawing-in" of the abdominal wall.Objectives. 1) To investigate, using magnetic resonance imaging (MRI), the function of the transversus abdominis muscle bilaterally during a drawing-in of the abdominal wall. 2) To validate the use of real-time ultrasound imaging as a measure of the deep abdominal muscle during a drawing-in of the abdominal wall.Summary of Background Data. Previous research has implicated the deep abdominal muscle, transversus abdominis, in the support and protection of the spine and provided evidence that training this muscle is important in the rehabilitation of low back pain. One of the most important actions of the transversus abdominis is to "draw-in" the abdominal wall, and this action has been shown to stiffen the sacroiliac joints. It is hypothesized that in response to a draw in, the transversus abdominis muscle forms a deep musculofascial "corset" and that MRI could be used to view this corset and verify its mechanism of action on the lumbopelvic region.Methods. Thirteen healthy asymptomatic male elite cricket players aged 21.3 +/- 2.1 years were imaged using MRI and ultrasound imaging as they drew in their abdominal walls. Measurements of the thickness of the transversus abdominis and internal oblique muscles and the slide of the anterior abdominal fascia were measured using both MRI and ultrasound. Measurement of the whole abdominal cross-sectional area (CSA) was conducted using MRI.Results. Results of the MRI demonstrated that, as a result of draw-in, there was a significant increase in thickness of the transversus abdominis (P < 0.001) and the internal oblique muscles (P < 0.001). There was a significant decrease in the CSA of the trunk (P < 0.001). The mean slide ( +/- SD) of the anterior abdominal fascia was 1.54 +/- 0.38 cm for the left side and 1.48 +/- 0.35 cm for the right side. Ultrasound measurements of muscle thickness of both transversus abdominis and the internal oblique, as well as fascial slide, correlated with measures obtained using MRI (interclass correlations from 0.78 to 0.95).Conclusions. The MRI results demonstrated that during a drawing-in action, the transversus abdominis contracts bilaterally to form a musculofascial band that appears to tighten (like a corset) and most likely improves the stabilization of the lumbopelvic region. Real-time ultrasound imaging can also be used to measure changes in the transversus abdominis during the draw-in maneuver.