Parameter Determination for a Computer Simulation Model of a Diver and a Springboard

in Journal of Applied Biomechanics
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This study used kinematic data on springboard diving performances to estimate viscoelastic parameters of a planar model of a springboard and diver with wobbling masses in the trunk, thigh, and calf segments and spring dampers acting at the heel, ball, and toe of the foot segment. A subject-specific angle-driven eight-segment model was used with an optimization algorithm to determine viscoelastic parameter values by matching simulations to four diving performances. Using the parameters determined from the matching of a single dive in a simulation of another dive resulted in up to 31% difference between simulation and performance, indicating the danger of using too small a set of kinematic data. However, using four dives in a combined matching process to obtain a common set of parameters resulted in a mean difference of 8.6%. Because these four dives included very different rotational requirements, it is anticipated that the combined parameter set can be used with other dives from these two groups.

Yeadon and King are with the School of Sport and Exercise Sciences, Loughborough University, Loughborough, United Kingdom, LE11 3TU; Kong is with the Department of Kinesiology, Univ. of Texas at El Paso.