Abstract
To illustrate the inadequacy of model simplification in complex movements, this study simulates standing long jumping with two model settings. Setting 1 uses a multi-segment planar model for both ground contact and airborne phases, while a particle model for the airborne phase is employed in model setting 2. Model movement is driven by torque generators at the ankle, knee, hip, and shoulder.
Although the takeoff postures and ground contact durations in the two model settings are similar, takeoff velocities are considerably different. This demonstrates that representing the whole body with a particle after jump takeoff implies
disregarding the flight and landing configuration, which may generate somewhat unrealistic takeoff motion.
