Interaction between postural and respiratory activities of the human rib cage muscler during thoracic rotation

胸廓旋转过程中人体胸腔肌肉的姿势和呼吸活动之间的相互作用

• 批准号: 12670571
• 负责人: ABE Tadashi
• 金额: $ 2.11万
• 依托单位: KITASATO UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2000
• 资助国家: 日本
• 起止时间: 2000 至 2002
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-12670571/
• 关键词: Respiratory muscle; parasternal intercostal muscle; Triangularis stermi; Electromyogram; Fine-Wire electrode; Posture; Respiratory Control; 筋電図; 傍胸骨肋間筋; β刺激剤

The parasternal intercostals muscles (PARA) and triangularis sterni muscle (TS) are recognized as the primary inspiratory and expiratory muscles of the chest wall, respectively. However there is scanty information on their postural or respiratory activity during thoracic rotation. We examined the electromyographic (EMG) activity of the PARA and TS using fine-wire electrodes in 20 healthy, awake, seated subjects during resting breathing. Fine-wire electrodes were inserted into the right PARA and TS using high-resolution ultrasound. With subjects breathing through a mouthpiece, airflow, raw and moving averaged EMG signals were recorded using a computer, during resting breathing through a series of maneuvers: 1)relaxed position, followed by voluntaiy thoracic rotation while holding the breath, 2)voluntary maintenance of thoracic rotation, 3)passive maintenance of thoracic rotation, and 4) voluntary isometric rotation against a counter force at a rotational angle of zero degrees (without r … More otation). During' the study, the EMG signals were recorded at zero degrees, and at rotational angles of 30 and 45 degrees to both the right and left. During resting breathing without rotation, the TS showed phasic expiratory EMG activity in all subjects in a seated posture. The right PARA showed remarkable tonic EMG activity in all subjects, during rightward voluntary thoracic rotation while holding the breath, but the right TS showed remarkable tonic EMG activity in all subjects during leftward voluntary thoracic rotation. With maintenance of rightward voluntary thoracic rotation during resting breathing, phasic EMG of the right PARA increased significantly but with lefttward voluntaiy thoracic rotation it decreased significantly. In contrast, phasic EMG of the right TS increased significantly with maintenance of lefiward voluntary thoracic rotation during resting breathing, but it decreased significantly with rightward voluntary thoracic rotation. Interestingly, phasic EMG activity of the right PARA with maintenance of rightward voluntary thoracic rotation is significantly greater than that with maintenance of rightward passive rotation, and there was no significant difference between passive rotation and during resting breathing without rotation. That is the same for the TS. EMG activity of the right TS with maintenance of leftward voluntary thoracic rotation is significantly greater than that with maintenance of leftward passive rotation, and there was no significant difference between passive rotation and during resting breathing without rotation. During leftward voluntaiy isometric rotation against the counter force at a rotational angle of zero degrees, phasic EMG activity of the right TS was significantly greater than that without any rotational force. However, phasic EMG activity of the right, is during rightward isometric rotation was smaller than that without any rotational force. it is concluded that 1)TS has more respiratory activity than previously reported, 2)PARA and TS have a postural function as well as respiratory function like other rib cage muscles, 3)There is a definite interaction between postural and respiratory control of the human PARA and TS, and 4)The interaction can not be explained by spinal reflex but higher brain center function. Less

胸骨旁肋间肌（帕拉）和胸骨三角肌（TS）分别被认为是胸壁的主要吸气肌和呼气肌。然而，关于他们在胸部旋转时的姿势或呼吸活动的信息很少。我们研究了20名健康、清醒、坐位受试者在静息呼吸时使用细丝电极的帕拉和TS的肌电图（EMG）活动。使用高分辨率超声将细丝电极插入右侧帕拉和TS。在受试者通过吹口呼吸的情况下，在通过一系列动作的静息呼吸期间，使用计算机记录气流、原始和移动平均EMG信号：1）放松位置，然后在屏住呼吸的同时进行自主胸廓旋转，2）自主胸廓旋转的维持，3）被动胸廓旋转的维持，以及4）在零度旋转角处抵抗反作用力的自主等轴旋转（没有r ...更多信息 旋转）。在研究过程中，肌电信号记录在零度，并在30度和45度的旋转角度向左和向右。在静止呼吸无旋转，TS显示阶段呼气肌电图活动在所有受试者在一个坐姿。在屏气条件下，所有受试者的右帕拉肌在自主胸廓旋转时均表现出明显的紧张性肌电活动，而所有受试者的右TS肌在自主胸廓旋转时均表现出明显的紧张性肌电活动。在静息呼吸时，保持胸主旋转，右侧PARA的时相肌电图显著增加，而保持胸主旋转时，右侧PARA的时相肌电图显著减少。相反，右TS的时相EMG在静息呼吸时保持向左随意旋转胸时显著增加，但在向左随意旋转胸时显著减少。有趣的是，右帕拉的时相肌电图活动与维持自主旋转的胸部显着大于与维持被动旋转，和被动旋转之间没有显着差异，在休息呼吸无旋转。TS也是如此。维持胸壁自主旋转时右侧TS肌电活动显著大于维持胸壁被动旋转时右侧TS肌电活动，而被动旋转时右侧TS肌电活动与静止呼吸时右侧TS肌电活动无显著性差异。在逆反力旋转零度时，右侧TS的时相肌电活动显著大于无旋转力时的时相肌电活动。而右侧等长旋转时的时相肌电活动明显小于无旋转力时的时相肌电活动。结论：1）TS具有比以往报道的更强的呼吸活动; 2）帕拉和TS具有与其他胸廓肌肉一样的姿势功能和呼吸功能; 3）人帕拉和TS的姿势和呼吸控制之间存在一定的相互作用; 4）这种相互作用不能用脊髓反射来解释，而应用高级脑中枢功能来解释。少

项目成果

Abe, T., C.Kobayashi, S.Namai, M.Yokoba, T.Yamada, M.Katagiri: "Electromyographic activity of human parasternal intercostal muscles during thoracic rotation"Kitasato Med. 38(2). 100-106 (2003)

Abe，T.，C.Kobayashi，S.Namai，M.Yokoba，T.Yamada，M.Katagiri：“胸椎旋转期间人体胸骨旁肋间肌的肌电活动”Kitasato Med。

Namai,S.,......T.Abe: "Electromyographic activity of parasternal intercostal and scalene muscles during CO_2 stimulated ventilation inhedry humans."Eur.Respir.J.. 16(supple 31). 262S (2000)

Namai,S.,......T.Abe：“CO_2 刺激人类通气期间胸骨旁肋间肌和斜角肌的肌电活动。”Eur.Respir.J.. 16（补充 31）。

Namai S., M.Katagiri, M.Yokoba, C.Kobayashi, T.Abe: "Differential activation of inspiratory muscles acting on the upper rib cage in humans"Kitasato Med.. 32. 307-317 (2002)

Namai S.、M.Katagiri、M.Yokoba、C.Kobayashi、T.Abe：“作用于人类上肋骨的吸气肌的差异激活”Kitasato Med.. 32. 307-317 (2002)

P.A.Easton: "Respiratory Muscle Electromyogram and Mouth pressure during isometric contraction"Respiratory Physiology and Neurobiology. 137. 51-60 (2003)

P.A.伊斯顿：“等长收缩时的呼吸肌电图和口压”呼吸生理学和神经生物学。

Easton,r.o,......T.Abe.: "Salbutamol effects on parasternal muscle muscle activity and ventilation in humans."Am.J.Respir.ara Critical Care Med.. 161(3). A117 (2000)

Easton,r.o,......T.Abe.：“沙丁胺醇对人类胸骨旁肌肉活动和通气的影响。”Am.J.Respir.ara Critical Care Med.. 161(3)。