Comportamento de diferentes parâmetros extraídos do sinal de EMG em função da força muscular / Behavior of different parameters extracted from the EMG signal as a function of strength

Muitos pesquisadores têm estudado a relação entre a atividade mioelétrica e performance muscular medido como trabalho, torque ou força. No entanto, não existe consenso sobre o melhor parâmetro para este tipo de análise...

Comparação de técnicas de detecção de atividade muscular através da eletromiografia de superfície / Comparison of techniques for detection of muscle activity by surface electromyography

The detection of muscular activity by surface electromyografhic (SEMG) signals has been used in different clinical applications and continues to present a research chaalenge, especially in weak muscular contraction condition with low signal to noise ratio. This work shows a comparison among three single-threshold methods and a double-threshold (DT) method for automatic muscle activity detection using a simulated SEMG signals. Latency and a contraction index were used to compare the results. Despite of some authors have reported good results with the DT method, in our results it was not observed...