Cioni R, Giannini F, Paradiso C, Battistini N, Navona C, Starita A
Institute for Nervous and Mental Diseases, University of Siena, Italy.
J Appl Physiol (1985). 1994 Nov;77(5):2163-8. doi: 10.1152/jappl.1994.77.5.2163.
Sex differences in the spectral parameters of the surface electromyogram (EMG) power spectrum were studied during voluntary muscle contractions of different strength with rest in between. The influence of two different types of leads (unipolar and bipolar) on the values of the spectral parameters was also investigated under the same experimental conditions. The subjects were 15 healthy female and 15 healthy male volunteers. The relationship between the amplitude (root mean square) of the EMG and the force developed was not linear. The mean values of the median power frequency were lower in women than in men. With both types of lead, the increase in force was accompanied by a progressive increase in median power frequency in male and female subjects. The significant differences in spectral parameters observed in the two sexes are probably correlated with anatomic differences.
在不同强度的随意肌肉收缩并伴有中间休息阶段的过程中，研究了表面肌电图（EMG）功率谱的频谱参数中的性别差异。在相同实验条件下，还研究了两种不同类型的导联（单极和双极）对频谱参数值的影响。受试者为15名健康女性和15名健康男性志愿者。肌电图的幅度（均方根）与所产生的力量之间的关系不是线性的。女性的中位功率频率平均值低于男性。对于两种类型的导联，男性和女性受试者力量的增加都伴随着中位功率频率的逐渐增加。在两性中观察到的频谱参数的显著差异可能与解剖学差异相关。
