青少年特发性脊柱侧弯症患者椎旁肌表面肌电信号测试方法选择与比较

A comparison of surface electromyographic signals recorded from the paraspinal muscles of adolescents with idiopathic scoliosis during three loading tests

目的采用多种方法对青少年特发性脊柱侧弯症（AIS）患者椎旁肌表面肌电活动进行检测，筛选可用于评价椎旁肌功能的检测方法。方法共选取AIS患者25例，所有入选患者均给予BST、抬物动作及半桥动作检测，采用芬兰ME6000型表面肌电仪记录患者凸、凹侧椎旁肌表面肌电信号指标，包括平均肌电值（AEMG）及频谱面积（SPA）等，分析各检测方法所得结果间有无差异。结果本研究AIS患者经上述3种方法检测后，发现各检测手段所获凸侧及凹侧AEMG、SPA数据间差异均无统计学意义（P〉0．05）。结论BST、抬物动作及半桥动作试验均可作为检测AIS患者椎旁肌表面肌电活动的有效方法。

Objective Using surface electromyography （sEMG） techniques to investigate the patterns of frequency domain indexes of sEMG signals recorded from adolescent idiopathic scoliosis （AIS） patients＇ paraspinal muscles. Methods Twenty-five AIS patients were enrolled. All the patients undertook the Biering Sorensen test （BST） ,the object-lifting test and a semi-bridge test, the ME3000P sEMG instrument was applied to record the electric activities of paraspinal muscles （convex/concave） of all subjects, and the time domain indexes such as averaged EMG（AEMG） and spectrum area（SPA） were analyzed, values in three tests were compared with one way ANOVA. Results The differences of AEMGs and SPAs on both convex and concave sides among the three tests showed no statistical significances （P = 0.10,0.23, 0.24 and 0.45, respectively）. Conclusions Any of the Biering Sorensen test（BST） , the object-lifting test or the semi-bridge test can be used to test the electric activities of paraspinal muscles （convex/concave） of AIS patients.