Optimum muscle characteristics, Equation

Fast fibres

Slow fibres

Mixed fibres

Optimum length change, , Equation (25)

Production force, , Equation (16), Equation (18), Equation (25)

Optimum stiffness, , Equation (19)

Optimum elastic stress, , Equation (17)

Contraction frequency, , Equation (15)

Optimum velocity, , Equation (23)

Optimum power,