やり投げにおける木製ヤリを使用したときのリリースパラメータへの影響

抄録

In this study, throwing experiments were conducted with the participation of six javelin throwers using a wooden javelin produced to conform to the current regulations for javelin throw competitions and a normal javelin made by duralumin. In the experiments, the wooden javelin and duralumin javelin were thrown and the following release parameters were measured: initial velocity, release height, release angle, attitude angle, and angle of attack). The distances of the throws were measured and the effects of the release parameters were assessed. As a result, it was found that the thrown distance of the wooden javelin was slightly shorter than that of the duralumin javelin, but the difference was not significant. Similarly, no significant difference was observed in each release parameter. The standard deviation of each release parameter was relatively large, and individual differences between the throwers were considered to be one of the causes.