| Title |
Muscle Model including Muscle Fatigue Dynamics of Stimulated Skeletal Muscle |
| Authors |
임종광(Lim, Jong-Kwang) ; 남문현(Nam, Moon-Hyon) |
| Keywords |
근육모델 ; 근육피로 ; 기능적 전기자극 ; 전기적 어드미턴스 ; 피로변수 Muscle Model ; Muscle Fatigue ; Functional Electrical Stimulation ; Electrical Admittance ; Fatigue Variable |
| Abstract |
A musculotendon model is proposed to predict muscle force during muscle fatigue due to the continuous functional electrical stimulation(FES). Muscle fatigue dynamics can be modeled as the electrical admittance of muscle fibers and included in activation dynamics based on the{{{{ { Ca}^{2+ } }}}} kinetics. The admittance depends on the fatigue variable that monotonically increase or decrease if electrical pulse exists or not, and on the stimulation parameters and the number of applied pulses. In the response of the change in activation the normalized Hill-type contraction dynamics connected with activation dynamics decline the muscle shortening velocity and thus its force under muscle fatigue. The computer simulation shows that the proposed model can express the muscle fatigue and its recovery without changing any stimulation parameters. |