Modelling of red and white muscle fibres in force generation
2017
Tipans, I., Riga Technical Univ. (Latvia) | Vimba, J., Riga Technical Univ. (Latvia) | Esaulenko, A., Riga Technical Univ. (Latvia)
Force development mechanisms in white and red muscle fibres are investigated. Both types of fibres play different roles in muscular force generation, expressed in force onset velocity and duration. The purpose of the work is to find the key parameters in the model imitating differences in onset velocity for both types of muscle fibre cells, which further would allow modelling the propagation of excitation wave. The model allowed estimating the effect of differences in capacitances of cell membranes of red and white muscle cells to depolarization velocity. With the model we were able to determine the conditions of appearance of low amplitude oscillations interrupting the force generation. Investigation of different behaviour of red and white muscle fibres is needed to understand reaction mechanisms of living objects to sudden external situation changes, such as obstacles or attacks. Similar ability to have two types of force production – slow sustained, and fast of short duration - is often required for robotic devices.
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