Compensatory muscle activation during forced respiratory tasks in individuals with chronic spinal cord injury
Compensatory muscle activation during forced respiratory tasks in individuals with chronic spinal cord injury
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DOI：
10.1016/j.resp.2015.07.001
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发表时间：
2015-10-01
影响因子：
2.3
通讯作者：
Lorenz, Douglas
中科院分区：
文献类型：
--
作者：
de Paleville, Daniela Terson;Lorenz, Douglas
当脊髓损伤发生时，呼吸肌的神经活动受到损害(De Troyer和海尔波恩，1980；De Troyer等人，1986,1990；Estenne等人，2000a)，导致严重的呼吸功能障碍(De Troyer和海尔波恩，1980；Linn等人，2000,2001；Yokoba等人，2003)。然而，导致这种功能障碍的潜在机制仍不清楚。本研究的目的是：(1)探讨肺功能与国际脊髓损伤神经分类标准(ISNCSCI)感觉和运动功能评分之间的相关性；(2)探讨脊髓损伤(SCI)后代偿性肌肉激活是否在肺功能中起作用。记录36例脊髓损伤患者和15例神经功能正常受试者的用力肺活量(FVC)、用力呼气量(FEV1)和最大呼吸任务时呼吸肌的肌电(EMG)。结果表明，肺功能(FVC、FEV1)与ISNCSCI运动和感觉评分密切相关，最大呼气压(MEP)与ISNCSCI感觉评分也呈显著正相关(Rho=0.73，p<；001)，中等相关，但与运动评分显著相关(Rho=0.41，p=0.04)。脊髓损伤后，MEP时上斜方肌、胸大肌和背阔肌出现代偿性募集，显著高于非损伤组(P<；.001)。(C)2015爱思唯尔B.V.保留所有权利。
When lesions in the spinal cord occur, the neural activation of respiratory muscles is compromised (De Troyer and Heilporn, 1980; De Troyer et al., 1986, 1990; Estenne et al., 2000a) resulting in significant respiratory dysfunction (De Troyer and Heilporn, 1980; Linn et al., 2000, 2001; Yokoba et al., 2003). However the underlying mechanisms that contribute to this dysfunction remain unclear. The aims of this study were: (1) to investigate whether a correlation exists between pulmonary function and the International Standards for the Neurological Classification of Spinal Cord Injury (ISNCSCI) examination scores for sensory and motor function; (2) to evaluate whether compensatory muscle activation plays a role in pulmonary function after spinal cord injury (SCI). We recorded Forced Vital Capacity (FVC); Forced Expiratory Volume in 1 s (FEV1); and electromyography (EMG) of respiratory muscles during maximum respiratory tasks in 36 with SCI and 15 neurologically intact participants. Results indicate that pulmonary function (FVC, FEV1) was strongly correlated with motor and sensory scores from the ISNCSCI exam and maximal expiratory pressure (MEP) was also significantly related to ISNCSCI sensory scores (rho = 0.73, p < .001) and moderately, but significantly correlated to motor scores (rho = 0.41, p = .04). After SCI, there is a compensatory recruitment of accessory muscles upper trapezius during maximal inspiratory pressure (MIP) and pectoralis and latissimus dorsi during MEP that is significantly higher than in non-injured (p < .001). (C) 2015 Elsevier B.V. All rights reserved.