M. Mariūnas and K. Kojelyte (Lithuania)
Electromyography, muscle stiffness, bioimpedance, magnitude of the load, the loading duration, biosignals.
Analytical research has been made of the muscle stiffness dependence on its bioimpedance and variations of loading magnitude in time according to the value of measured biosignal voltage. Analytical expressions of the muscle stiffness have been derived from the equality condition of the work performed by the muscle and the biosignal energy. It was estimated that the muscle stiffness asymptotically decreases due to the increment of loading duration and the constant load. Polynomial expressions of muscle stiffness are presented in which the loading duration and the magnitude of the load were evaluated.
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