Physiotherapy in Women's Health Research Group (FPSM), Physiotherapy Department, Faculty of Medicine and Health Sciences, University of Alcalá, Alcalá de Henares, Madrid, Spain.
School of Rehabilitation Sciences, Faculty of Health Sciences, University of Ottawa, Ottawa, Ontario, Canada.
Phys Ther. 2022 Aug 4;102(8). doi: 10.1093/ptj/pzac086.
The purpose of this study was to determine the acute effect of an abdominal hypopressive exercise (AHE) on linea alba morphology among women who are primiparous and to compare this effect with that of other common abdominal exercise modalities.
A cross-sectional study of 46 women 3 months after first delivery was conducted. B-mode ultrasound imaging of the interrectus distance (IRD) and linea alba distortion was performed 2 cm below (I-point) and above (S-point) the umbilicus and at the mid-point between the umbilicus and xiphoid process (X-point). Images were recorded at rest and during an AHE performed in a supine position, a semi curl-up (SCU), an abdominal drawing-in maneuver (ADIM), and a SCU performed after an initial ADIM (ADIM+SCU).
The SCU exercise narrowed the IRD at the X- and S-points. Compared with SCU, AHE and ADIM widened the IRD at the S- and X-points. No significant differences were found when comparing the IRD at rest, during AHE and during ADIM, but AHE tended to narrow I-point IRD more than ADIM but to widen S-point IRD more than ADIM+SCU. No participant showed linea alba distortion during the AHE or ADIM. When compared, SCU increased the occurrence of distortion with respect to AHE and ADIM. The isolated hypopressive posture did not change the IRD or linea alba distortion.
Among women who were postpartum, AHE seemed to narrow IRD below the umbilicus compared with ADIM without either of these 2 modalities generating linea alba distortion, as SCU or ADIM+SCU does. Thus, although no significant differences were found when comparing the IRD at rest and during AHE, the AHE could improve the tensile response of the linea alba without increasing the IRD.
This is believed to be the first study to describe linea alba changes during AHE in women who are postpartum. AHE and ADIM seem to show different effects on infraumbilical IRD. The lack of distortion suggests that linea alba may undergo tensile loading at all levels.
本研究旨在确定腹部负压运动（AHE）对初产妇白线形态的急性影响，并将其与其他常见腹部运动方式的效果进行比较。
对首次分娩后 3 个月的 46 名妇女进行了一项横断面研究。在脐下 2cm（I 点）、脐上（S 点）和脐与剑突中点（X 点）进行腹直肌间距离（IRD）和白线变形的 B 型超声成像。在休息时和仰卧位、半卷腹（SCU）、腹部内收运动（ADIM）以及初始 ADIM 后进行 SCU（ADIM+SCU）时记录图像。
SCU 运动使 X 点和 S 点的 IRD 变窄。与 SCU 相比，AHE 和 ADIM 使 S 点和 X 点的 IRD 变宽。在休息时、AHE 时和 ADIM 时，IRD 没有显著差异，但 AHE 倾向于比 ADIM 更窄 I 点 IRD，但比 ADIM+SCU 更宽 S 点 IRD。在 AHE 或 ADIM 期间，没有参与者出现白线变形。相比之下，SCU 增加了与 AHE 和 ADIM 相比的变形发生率。孤立的负压姿势不会改变 IRD 或白线变形。
在产后妇女中，与 ADIM 相比，AHE 似乎使脐下 IRD 变窄，而这两种方法均未导致白线变形，如 SCU 或 ADIM+SCU 那样。因此，尽管在休息时和 AHE 时的 IRD 没有差异，但 AHE 可以在不增加 IRD 的情况下改善白线的拉伸反应。
这被认为是首次描述产后妇女 AHE 期间白线变化的研究。AHE 和 ADIM 似乎对脐下 IRD 有不同的影响。没有变形表明白线可能在所有层面都承受拉伸载荷。
