Lee Jae-Kwang, Lee Jin-Hwan, Kim Kwang-Su, Lee Jae-Hong
Department of Physical Therapy, College of Medical Science, Catholic University of Daegu, Republic of Korea.
Department of Physical therapy, Daegu Health College: 15 Yeongsong-ro, Buk-gu, Daegu, Republic of Korea.
J Phys Ther Sci. 2020 Jun;32(6):401-404. doi: 10.1589/jpts.32.401. Epub 2020 Jun 2.
[Purpose] There have been many studies on ipsilateral erector spinae in regard of prone hip extension (PHE). However, mediating methods have been focusing on the reinforcement of gluteus. Hereupon, this study is intended to identify how an increase of abdominal drawing-in maneuver influences on posterior oblique sling (POS) and suggest a mediating method to effectively reinforce them. [Participants and Methods] This study has been conducted on normal male (10) and female (10), and participants were asked to prove PHE exercise and abdominal drawing-in maneuver prone hip extension exercise (ADIM PHE). Surface electromyography (EMG) was recorded from the contralateral latissimus dorsi, ipsilateral erector spinae, ipsilateral gluteus maximus, and ipsilateral biceps femoris. A pared t-test was used to compare muscle activity POS. [Results] EMG activity of the contralateral latissimus dorsi, ipsilateral gluteus maximus was significantly greater performed ADIM PHE than PHE. As for ipsilateral erector spinae muscle, ipsilateral biceps femoris activation was lower in ADIM PHE than PHE. [Conclusion] According to the results of this study, abdominal drawing-in maneuver seems to be an important factor that influences on muscular activation of POS.
[目的] 关于俯卧位髋关节伸展（PHE）时同侧竖脊肌，已有多项研究。然而，介导方法一直侧重于臀肌的强化。因此，本研究旨在确定收腹动作的增加如何影响后斜肌吊带（POS），并提出一种有效强化它们的介导方法。[参与者与方法] 本研究对10名正常男性和10名正常女性进行，要求参与者进行PHE运动和收腹动作俯卧位髋关节伸展运动（ADIM PHE）。从对侧背阔肌、同侧竖脊肌、同侧臀大肌和同侧股二头肌记录表面肌电图（EMG）。采用配对t检验比较肌肉活动POS。[结果] 与PHE相比，进行ADIM PHE时对侧背阔肌、同侧臀大肌的EMG活动显著增强。至于同侧竖脊肌，ADIM PHE时同侧股二头肌的激活低于PHE。[结论] 根据本研究结果，收腹动作似乎是影响POS肌肉激活的一个重要因素。
