Abdominal muscle activation: An EMG study of the Sahrmann five-level core stability test.
Abdominal muscle activation: An EMG study of the Sahrmann five-level core stability test.
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DOI：
10.1142/s1013702520500080
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发表时间：
2020-12
期刊：
影响因子：
--
通讯作者：
Hafiz E
中科院分区：
文献类型：
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作者：
Chan EWM;Hamid MSA;Nadzalan AM;Hafiz E
Sahrmann五节段核心稳定性试验方案已用于评价核心肌肉稳定脊柱的能力。然而，Sahrmann方案的验证研究有限。本研究的目的是比较不同水平的Sahrmann五水平核心稳定性（1-5水平）对腹直肌（RA）、腹外斜肌（EO）和腹横肌/腹内斜肌（TrA/IO）肌肉活动的影响。22名无症状男性参与者，年龄21.3.59岁。参与者被指示进行最大自主收缩（MVC）和5个级别的Sahrmann 5级核心稳定性测试，并在压力生物反馈单元（PBU）的指导下进行。将Sahrmann五级核心稳定性测试的五个级别期间每块肌肉的表面肌电图（EMG）数据归一化为MVC的百分比。结果显示，在Sahrmann五级核心稳定性测试的五个级别之间，RA [（4）= 64.80，.001]、EO [（4）= 58.11，.001]和TrA/IO [（4）= 56.00，.001]的标准化EMG存在显著差异。事后分析显示，Sahrmann 5级和3级的腹部EMG信号显著高于4级、2级和1级（.001）。总之，Sahrmann五级核心稳定性试验根据Sahrmann试验的水平而有所不同。在水平3和5期间观察到显著更高的腹肌活动。因此，Sahrmann五级堆芯稳定性试验的第3级和第4级的分类交换应在未来重新考虑。
Sahrmann five-level core stability test protocol has been used to evaluate the ability of the core muscles to stabilize the spine. However, validation studies on the Sahrmann protocol are limited. The purpose of this study was to compare the different levels of Sahrmann five-level core stability (levels 1–5) on the muscle activity of rectus abdominis (RA), external oblique (EO), and transverse abdominis/internal oblique (TrA/IO). Twenty-two asymptomatic male participants aged 21.3.59 years were recruited. Participants were instructed to perform maximum voluntary contraction (MVC) and five levels of Sahrmann five-level core stability test guided with a pressure biofeedback unit (PBU). The surface electromyography (EMG) data of each muscle during five levels of Sahrmann five-level core stability test were normalized as a percentage of MVC. Results showed significant differences in the normalized EMGs of RA [(4) = 64.80, .001], EO [(4) = 58.11, .001], and TrA/IO [(4) = 56.00, .001] between the five levels of Sahrmann five-level core stability test. Post-hoc analysis revealed Sahrmann levels 5 and 3 have significantly higher abdominal EMG signals than levels 4, 2, and 1 (.001). In conclusion, the Sahrmann five-level core stability test differs according to the level of Sahrmann tests. Significantly higher abdominal muscle activities were observed during levels 3 and 5. Therefore, the classification exchange in levels 3 and 4 of the Sahrmann five-level core stability test should be reconsidered in the future.