The Mode of Activity of Cervical Extensors and Flexors in Healthy Adults: A Cross-Sectional Study.
The Mode of Activity of Cervical Extensors and Flexors in Healthy Adults: A Cross-Sectional Study.
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DOI：
10.3390/medicina58060728
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发表时间：
2022-05-28
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影响因子：
--
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中科院分区：
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背景和目的：本研究的目的是研究健康成人坐位颈部运动时，双侧颈伸、屈肌群在矢状面、额面和水平面的活动情况。材料和方法：招募35名健康受试者，平均年龄为20.3±2.4岁。共记录了9秒的颈伸和屈肌的表面肌电信号，分三个阶段进行：第一阶段是颈部从中立位置到最大活动范围的运动；第二阶段是保持颈部的最大活动范围；第三阶段是颈部从最大活动范围到中立位置的运动，包括屈颈、伸颈、左右侧屈、左右侧屈、左右旋转和保持颈部处于中立位置。每个动作中的肌肉活动被归一化为最大自主收缩(%MVC)的百分比，以便对肌肉进行比较。结果：中立位时，伸肌的MVC%明显大于屈肌(P<；0.001)。此外，中立位的%MVC显著大于中立位的%MVC：屈(p=0.014)和伸(p=0.020)，同侧伸(p=0.006)和屈(p<；0.001)，屈(p<；0.001)，伸(p=0.010)，同侧屈(p<；0.001)，屈(p<；0.001)，伸屈(p<；0.001)，同侧屈(p<；0.001)，对侧屈(p=0.004)和对侧伸肌(p=0.018)；旋转时的双侧伸肌和对侧屈肌(p<；0.001)。结论：本研究确定了健康成人颈部运动时伸屈肌群的典型表面肌电信号活动，这一信息可用于了解非特异性颈痛的病理生理机制，并为评价治疗效果提供一个指标。
Background and Objectives: The purpose of this study was to investigate the activity of bilateral cervical extensors and flexors on the sagittal, frontal, and horizontal planes of healthy adults during motions of the neck in a sitting position, which has not been satisfactorily investigated by surface electromyogram (sEMG). Material and Methods: We recruited 35 healthy participants (mean ± standard deviation of age, 20.3 ± 2.4). sEMG recordings of the cervical extensors and flexors were performed for a total of nine seconds in three phases: Phase I involved the motion of the neck from the neutral position to the maximum range of motion; Phase II involved maintaining the neck at the maximum range of motion; and Phase III involved the motion of the neck from the maximum range of motion to the neutral position during neck flexion, extension, right and left lateral flexion, right and left rotation, and maintaining the neck in the neutral position. Muscle activities in each motion were normalized as a percentage of maximal voluntary contraction (%MVC) so that the muscles could be compared. Results: The %MVC of the extensors was significantly larger than that of the flexors in the neutral position (p < 0.001). In addition, the %MVCs of the following were significantly larger than the %MVC in the neutral position: the extensors in flexion (p = 0.014) and extension (p = 0.020), the ipsilateral extensors (p = 0.006) and flexors (p < 0.001) in lateral flexion in Phase I; the flexors in flexion (p < 0.001), the extensors in extension (p = 0.010), and the ipsilateral extensors and flexors in lateral flexion (p < 0.001) in Phase II; the extensors and flexors in flexion (p < 0.001), the flexors in extension (p < 0.001), the ipsilateral flexors (p < 0.001), the contralateral flexors (p = 0.004) and the contralateral extensors (p = 0.018) in lateral flexion in Phase III; and the bilateral extensors and contralateral flexors during rotation in all three phases (p < 0.001). Conclusion: The typical sEMG activities of the extensors and flexors during motion of the neck in healthy adults were identified in this study; this information can be used to understand the pathophysiology of non-specific neck pain and to provide an index for evaluating the effect of treatment.
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影响因子：
2.8
作者：
Clausen, JD;Goel, VK;Scifert, J
通讯作者：
Scifert, J
DOI：
10.1115/1.4023524
发表时间：
2013-06-01
影响因子：
1.7
作者：
Anderst, William J.;Donaldson, William F., III;Kang, James D.
通讯作者：
Kang, James D.
影响因子：
2.5
作者：
Farahpour, Nader;Ghasemi, Safoura;Saba, Mohammad Sadegh
通讯作者：
Saba, Mohammad Sadegh
DOI：
10.1016/s0003-9993(96)90008-8
发表时间：
1996-07-01
影响因子：
4.3
作者：
Barton, PM;Hayes, KC
通讯作者：
Hayes, KC
影响因子：
3
作者：
Falla, DL;Jull, GA;Hodges, PW
通讯作者：
Hodges, PW