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目的：通过对慢性非特异性颈部不适飞行员与无症状飞行员之间头颈夹肌表面肌电特征的比较，为慢性非特异性颈部不适飞行员的早期诊断提供参考依据。方法：用表面肌电仪测量52 名慢性非特异性颈部不适飞行员与11 名无症状飞行员双侧头颈夹肌的松弛状态、等长收缩以及异长收缩时的表面肌电特征，分析不同状态下双侧头颈夹肌疲劳性肌电指标MFs、MPFs、ZCRs 以及平均肌电AEMG值，用统计学软件SPSS 18.0 分析实验结果。结果：非特异性颈部不适飞行员与无症状飞行员双侧头颈夹肌在松弛状态时疲劳性肌电指标MFs、MPFs、ZCRs 比较均无统计学差异(P>0.05)，其双侧头颈夹肌在等长收缩和异长收缩时间有统计学差异(P<0.05)。头颈夹肌处于松弛状态时，两组间平均肌电AEMG 比较无统计学差异(P>0.05)，而在肌肉等长收缩和异长收缩时，两组间比较有统计学差异(P<0.05)。结论：慢性非特异性颈部不适飞行员与无症状飞行员之间头颈夹肌表面肌电相关指标存在统计学差异，慢性颈部不适的飞行员相比无症状飞行员更易出现头颈夹肌的疲劳以及头颈夹肌的功能下降。头颈夹肌表面肌电特征有助于早期诊断慢性非特异性颈部不适飞行员的肌肉功能状态的改变。

英文摘要:

Objective:To compare the sEMG indexes between nonspecific neck pain pilots and pain-free pilot, and provide references for the early diagnosis of pilots with chronic nonspecific neck pain.Methods:The surface electromyography was respectively used to measure the M. splenius capitis and cervicis muscle in relaxation, isometric contraction, iso-isometric contraction condition of 52 nonspecific neck pain pilots and 11 pain-free pilots. The sEMG indexes, such as MFs, MPFs, ZCRs and AEMG, were analyzed by software SPSS 18.0.Results:There was no significant difference of sEMG indexes of M. splenius capitis and cervicis muscle between nonspecific neck pain pilots and pain-free pilots in relaxation condition (P>0.05). There were significant differences of sEMG indexes of M. splenius capitis and cervicis muscle between nonspecific neck pain pilots and pain-free pilots in isometric contraction and iso-isometric contraction condition(p<0 05).Conclusion:There were significant differences in some sEMG indexes of M. splenius capitis and cervicis muscle between nonspecific neck pain pilots and pain-free pilots. The nonspecific neck pain pilots were more easily to feel fatigue and cause the declined function. The surface electromyography was helpful for the early diagnosis of nonspecific neck pain of pilots.

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