バスケットボールショットの正確さに及ぼすボール初速度と投射角度の影響

概要

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The trajectory of the ball after release depends upon initial ball velocity, angle of projection and hight of release. The purpose of this experiment was to determine the effects of initial ball velocity and angle of projection on accuracy of basketball shooting and to examine the relationship between these variables. The initial ball velocity, the height of ball release, and the angle of projection were analyzed through the films taken by a stroboscopic camera and a 16mm high-speed cinecamera. The degree of accuracy of the shooting was calculated by the following equation: [numerical formula] Where : Δx : X coordinates indicating the scatter of the ball at the level of hoop. v_0, θ_0 and H_0: the initial ball velovity, the angle of projection, and the height of ball release, respectively, as averaged from ten trials. ΔV, Δθ and ΔH: the values of standard deviation of the initial ball velocity (V_0), the angle of projection (θ_0) and the height of the release (H_0), respectively. It could be said from the above calculations that the accuracy of shooting is depending upon the control of initial ball velocity considerably more than the angle of projection.
1981-12-01