Rectus Femoris and Vastus Medialis Muscles Exhibit Different Dynamics in Processing of Isometric Voluntary Contractions: A Fractal Analysis Study
Küçük Resim Yok
Tarih
2019
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Ieee
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
The purpose of this study is to obtain distinguishing features of the surface EMG (sEMG) generated by the rectus femoris (RF) and vastus medialis (VM) under maximum voluntary contractions by using the fractal analyses method and compare their dynamic behavior. 15 healthy subjects were requested to produce 5 consecutive maximum voluntary isometric contractions of quadriceps muscle, each lasting 5 seconds with a resting period of 10 seconds between contractions at a knee flexion angle of 15o. Force produced by quadriceps muscles and sEMG from RF and VM were recorded. Correlation dimension and root mean square (rms) values of stationary part of each sEMG were computed. Two-way ANOVA analysis for repeated measures reveled that the mean of the correlation dimension was 1.388 +/- 0.004 for RF and 1.376 +/- 0.007 for VM. There was a significant main effect for muscle (p = 0.027) whereas there was not a significant effect for time (p = 0.918). The means of the rms of the sEMG signals from RF and VM were not significantly different. It was concluded that the processes in producing sEMG in RF are more complex than that in VM and the correlation dimension can be used as a distinguishing feature of RF and VM.
Açıklama
IEEE International Symposium on Medical Measurements and Applications (IEEE MeMeA) -- JUN 26-28, 2019 -- Istanbul, TURKEY
Anahtar Kelimeler
Rectus Femoris, Vastus Medialis, Correlation Dimension, Fractal Dimension, Electromyography, Maximal Voluntary Contraction
Kaynak
2019 Ieee International Symposium on Medical Measurements And Applications (Memea)
WoS Q Değeri
N/A
Scopus Q Değeri
N/A
