Lee Kyeongjin
Department of Physical Therapy, College of Health Science, Kyungdong University, Wonju 24764, Republic of Korea.
Sports (Basel). 2023 Mar 10;11(3):66. doi: 10.3390/sports11030066.
As core stabilization exercise is essential for maintaining a stable spine and improving functional performance, understanding the activation of core muscles and the stabilization of the trunk and pelvis during such exercise is crucial. The purpose of this study was to investigate the muscle activation and stabilization of the lumbar-pelvic region during core stabilization exercise, with a specific focus on analyzing EMG and 3D motion kinematic data. The study aimed to understand how different tension settings on the reformer affect muscle activation and hip motion, as well as how these factors impact pelvic and trunk stability during the exercise. The reformer consists of a carriage that slides back and forth on rails, with springs providing resistance. The springs can be adjusted to vary the resistance level. Twenty-eight healthy women participating in this study were asked to perform 'side splits', a hip abduction exercise, on the reformer in both heavy and light tension settings. Activation of the internal oblique (IO), rectus abdominis (RA), multifidus (MU), costal lumbosacral (IL), gluteus medius (GM), and adductor muscles (AL) were measured using electromyography (EMG) and 3D motion. Kinematic data using an assay were also measured during exercise. GM, IO, and MU muscles were more active when heavy springs were used, and AL muscles were more active when light springs were used. Hip motion was more symmetrical when lighter springs were used with a greater range of hip motion. There was less pelvis and torso weight transfer and more torso and pelvis stability when the heavier springs were used. In this study, we confirmed that core stabilization exercise on an unstable surface activates the deep muscles of the abdomen and back and is effective for pelvic and trunk stabilization training.
由于核心稳定训练对于维持脊柱稳定和改善功能表现至关重要，因此了解此类训练期间核心肌肉的激活以及躯干和骨盆的稳定情况至关重要。本研究的目的是调查核心稳定训练期间腰骶部区域的肌肉激活和稳定情况，特别关注分析肌电图（EMG）和三维运动学数据。该研究旨在了解在整脊床（reformer）上不同的张力设置如何影响肌肉激活和髋关节运动，以及这些因素在训练期间如何影响骨盆和躯干的稳定性。整脊床由一个在轨道上来回滑动的滑架组成，弹簧提供阻力。弹簧可调节以改变阻力水平。本研究邀请了28名健康女性在整脊床上分别在重张力和轻张力设置下进行“侧劈叉”，即髋关节外展运动。使用肌电图（EMG）和三维运动测量腹内斜肌（IO）、腹直肌（RA）、多裂肌（MU）、肋腰骶肌（IL）、臀中肌（GM）和内收肌（AL）的激活情况。在运动期间还使用一种测定方法测量运动学数据。使用重弹簧时，臀中肌、腹内斜肌和多裂肌更活跃，使用轻弹簧时，内收肌更活跃。使用较轻弹簧时，髋关节运动更对称，髋关节运动范围更大。使用较重弹簧时，骨盆和躯干的重量转移较少，躯干和骨盆更稳定。在本研究中，我们证实了在不稳定表面上进行核心稳定训练可激活腹部和背部的深层肌肉，并且对骨盆和躯干稳定训练有效。
