Regional differences in abdominal muscle activity during various maneuvers in humans.
Regional differences in abdominal muscle activity during various maneuvers in humans.
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人类各种动作期间腹部肌肉活动的区域差异。
DOI：
10.1152/jappl.1981.51.6.1471
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发表时间：
1981
期刊：
影响因子：
--
通讯作者：
Kosch,PC
中科院分区：
文献类型：
--
作者：
Strohl,KP;Mead,J;Banzett,RB;Loring,SH;Kosch,PC
为了确定呼吸和非呼吸动作期间腹部肌肉的活动是否存在区域差异，我们通过比较放置在直肌侧面的表面电极（一对位于上腹部，另一对位于下腹部）的肌电图（EMG）活动，对四名健康受试者进行了研究。在一名受试者中，肌电图记录是通过放置在腹壁各层的电线进行的。通过腹壁的实时超声检查确定操作过程中解剖结构的相对位置和尺寸变化。驱逐或瓦氏动作在上腹部和下腹部引起相同的相对肌电图活动。在静息仰卧位时，未检测到肌电图活动；然而，在站立姿势时，下腹部出现更大的强直肌电图活动。在再呼吸期间，所有受试者呼气时上腹部的阶段性肌电图活动均大于下腹部。超声检查和肌电图评估的观察结果表明，腹部肌肉的控制及其对呼吸力学的影响可能比以前的报告所暗示的更为复杂。
To determine if regional differences exist in the activity of abdominal muscles during respiratory and nonrespiratory maneuvers, we studied four healthy subjects by comparing electromyographic (EMG) activity from surface electrodes placed lateral to rectus muscle, one pair on the upper abdomen and the other on the lower abdomen. In one subject EMG recordings were made from wires placed in various layers of the abdominal wall. Relative positions and changes in size of anatomic structures during maneuvers were determined from real-time ultrasonography of the abdominal wall. Expulsive or valsalva maneuvers evoked the same relative EMG activity in the upper and lower abdomen. In the resting supine posture no EMG activity was detectable; however, in the standing posture greater tonic EMG activity appeared in the lower abdomen. During rebreathing, phasic EMG activity during expiration was greater in the upper than in the lower abdomen in all subjects. Observations from ultrasonographic and electromyographic evaluations suggest that the control of abdominal muscles and their influence on respiratory mechanics are potentially more complex than has been suggested by previous reports.