Deep and superficial abdominal muscle activation during trunk stabilization exercises with and without instruction to hollow
Deep and superficial abdominal muscle activation during trunk stabilization exercises with and without instruction to hollow
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DOI：
10.1016/j.math.2010.05.006
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发表时间：
2010-10-01
期刊：
影响因子：
--
通讯作者：
Thorstensson, Alf
中科院分区：
文献类型：
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作者：
Bjerkefors, Anna;Ekblom, Maria M.;Thorstensson, Alf
人体腹外侧腹壁最深的肌肉，腹横肌 (TrA)，在脊柱稳定中发挥着特殊作用，这促使特殊的核心稳定性练习和空心训练专门涉及这块肌肉。这里的目的是评估在仰卧、桥接和四点跪姿下进行的五种常见稳定练习中 TrA 和浅表腹直肌 (RA) 肌肉的激活水平，有或没有空心指令，即持续将腹部下半部分拉向脊柱。九名习惯性活跃的女性参与其中，并在超声引导下引入肌内细线电极，从 TrA 和 RA 记录双侧肌肉活动。结果表明，通过特定的空心指令，受试者能够选择性地增加与 RA 分离的 TrA 的激活，并且即使在空心指令之后，与练习的不对称性相关的 TrA 活动幅度的侧面差异仍然存在。所研究的练习导致 TrA 激活水平为最大努力期间的 4% 至 43%，因此可以在临床上用于在设计旨在训练该肌肉的计划时对 TrA 上的负荷进行分级。 (C) 2010 Elsevier Ltd. 保留所有权利。
The deepest muscle of the human ventro-lateral abdominal wall, the Transversus Abdominis (TrA), has been ascribed a specific role in spine stabilization, which has motivated special core stability exercises and hollowing instruction to specifically involve this muscle. The purpose here was to evaluate the levels of activation of the TrA and the superficial Rectus Abdominis (RA) muscles during five common stabilization exercises performed in supine, bridging and four-point kneeling positions, with and without instruction to hollow, i.e. to continuously pull the lower part of the abdomen towards the spine. Nine habitually active women participated and muscle activity was recorded bilaterally from TrA and RA with intramuscular fine-wire electrodes introduced under the guidance of ultrasound. Results showed that subjects were able to selectively increase the activation of the TrA, isolated from the RA, with the specific instruction to hollow and that side differences in the amplitude of TrA activity, related to the asymmetry of the exercises, remained even after the instruction to hollow. The exercises investigated caused levels of TrA activation from 4 to 43% of that during maximal effort and can thus be used clinically to grade the load on the TrA when designing programs aiming at training that muscle. (C) 2010 Elsevier Ltd. All rights reserved.