颈部不同姿势侧卧位时颈肌表面肌电信号分析及其意义  

Surface electromyography signals from neck muscles during different craniocervical postures in a lateral recumbent position

作　　者：张芳[1] 刘怀霞[1] 卢君艳[1] 陶涛涛[1] 程博[1] 蒋松鹤[1] 

机构地区：[1]浙江省温州医学院附属第二医院康复理疗科,温州325000

出　　处：《中华物理医学与康复杂志》2010年第5期363-365,共3页Chinese Journal of Physical Medicine and Rehabilitation

基　　金：浙江省大学生科技创新计划立项资助项目,温州市科技局项目（Y20090332）

摘　　要：目的 观察颈部不同屈伸姿势侧卧位时颈部肌肉表面肌电信号的变化,探讨侧卧位睡姿时头颈部的良好摆放姿势.方法 表面肌电图观察30例青年志愿者左侧卧位下,颈部前屈、中立及后伸时双侧胸锁乳突肌、斜方肌上部、颈竖脊肌的表面肌电信号,采用积分肌电值（IEMG）和中位频率（MF）分析.结果 胸锁乳突肌前屈位与后伸位比较,IEMG数值较低,差异有统计学意义（P〈0.05）;颈竖脊肌在颈后伸位与颈前屈位比较,IEMG数值较低,差异有统计学意义（P〈0.05）,斜方肌上部在3种体位时IEMG值比较差异无统计学意义（P〉0.05）,3对肌肉在3种体位时MF值比较差异无统计学意义（P〉0.05）.结论 侧卧位头颈部后伸时颈背部肌肉紧张度较小,提示侧卧位睡眠时头颈部较佳姿势为稍后伸位.Objective To survey cervical myoelectric signals during craniocervical flexion, neutral and extension postures, and to explore the evidence that proper head position can alleviate cervical muscle fatigue in a lateral recumbent position. Methods Surface electromyography （sEMG） signals were detected from the sternocleidomastoid, upper trapezius and erector spinae muscles of 30 young subjects bilaterally during craniocervical flexion,neutral and extension postures in the left lateral recumbent position. The integrated trace area （IEMG） and median frequency （MF） were estimated. Results The average IEMG of the sternocleidomastoid muscles was significantly lower in flexion than in extension bilaterally. The average IEMG of the erector spinae muscles was lower in extension than in flexion bilaterally, and the difference was again significant. The IEMGs of the upper trapezius muscle showed no significant difference on average in the three postures bilaterally. There was no significant MF difference in any of the muscles. Conclusions The muscles in the cervical back were less activated during craniocervical extension in a lateral recumbent position. A little cranicocervical extension is optimal while resting in a lateral recumbent position.

关 键 词：表面肌电图 侧卧位 胸锁乳突肌 颈竖脊肌 斜方肌上部 

分 类 号：R681.5[医药卫生—骨科学]