Models are used to simulate and calculate individual muscle forces and body mass accelerations. Parameters which describe the characteristics of the modeled muscles are important input variables. Since they are estimated values it is of interest how variations to those parameters influence the calculated forces and resulting accelerations. Which parameters are crucial and which ones can be neglected? Are there interdependences between muscles? For example, does a change in force produced by one muscle affect the performance of another? The author Gisela Hoflinger gives an introduction of...