Abstract
As a model for putting a shot, we employ the release model with three degrees of freedom which includes three parameters : shot putting speed and angle, and also horizontal speed of the shot putter's body. The three DOF model provides the explicit solution of the optimum release angle with the model parameters, and the solution is used for estimating the value of the parameters from measured data. Under the assumption that shot putters release a shot at the optimum angle, the speeds of putting a shot and the body are estimated. The result shows the distinct negative correlation between these speeds. Also, we attempt to clarify the difference between the glide and rotation techniques, and find that the optimum putting angle and the distribution of the body speed depend on the throwing techniques.
