Neuromuscular independence of abdominal wall muscles as demonstrated by middle-eastern style dancers
Neuromuscular independence of abdominal wall muscles as demonstrated by middle-eastern style dancers
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DOI：
10.1016/j.jelekin.2007.01.003
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发表时间：
2008-08-01
影响因子：
2.5
通讯作者：
McGill, Stuart M.
中科院分区：
文献类型：
--
作者：
Moreside, Janice M.;Vera-Garcia, Francisco J.;McGill, Stuart M.
以前分析腹壁神经肌肉独立性的研究涉及的参与者群体在分离单个肌肉节段方面没有受过专门的训练。我们选择了9名受过中东舞蹈艺术训练的女性作为研究对象，希望她们在运动控制方面拥有独特的技能。具体来说，我们正在寻找上腹直肌（URA）与下腹直肌（LRA）分离的证据，以及了解斜肌在腹壁协同作用中的作用。肌电图分析进行了8个躯干肌肉双边的舞者参加了30个舞蹈，平面，和卷曲的活动。然后将滤波后的数据互相关以确定信号对之间的时滞。只有三个舞蹈动作表现出一致的证据表明，有能力分开URA/LRA激活时间。外斜肌和内斜肌倾向于在时间上与LRA对齐。然而，这些发现仅在这三种特定的“腹部翻滚”条件下明显，所有这些条件下肌肉激活水平均较低，并且没有外部扭矩。URA/LRA之间显著不同的激活水平（% MVC）的证据在8种情况下得到证明，所有这些情况都需要各种骨盆运动和最小的胸部运动。(c)2007爱思唯尔有限公司保留所有权利。
Previous studies analyzing neuromuscular independence of the abdominal wall have involved a participant population with no specific training in separating individual muscle segments. We chose to study nine women trained in the art of middle-eastern dance, anticipating they may have unique skills in motor control. Specifically, we were searching for evidence of separation of upper rectus abdominis (URA) from lower rectus abdominis (LRA), as well as understanding what role the oblique muscles play in abdominal wall synergies. EMG analysis was done on eight trunk muscles bilaterally as the dancers participated in 30 dance, planar, and curl-up activities. The filtered data were then cross-correlated to determine the time lag between pairs of signals. Only three dance movements demonstrated consistent evidence of an ability to separate URA/LRA activation timing. The external and internal oblique muscles tend to align themselves temporally with the LRA. However, these findings were only evident in these three specific "belly-roll" conditions, all with low levels of muscle activation, and no external torque. Evidence of significantly different activation levels (% MVC) between URA/LRA was demonstrated in eight conditions, all of which required various pelvis movements with minimal thorax motion. (c) 2007 Elsevier Ltd. All rights reserved.