AN EXPLORATIVE STUDY OF THE DEPENDABILITY OF THE EXECUTION ON ROUTINE SCORING GOAL IN FIELD HOCKEY

Z. Stefanov, A. Antonov, Dimitar Zagorski, Galina Rusimova, I. Ivanov, Ognyan Tishinov
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Abstract

ABSTRACT Biomechanical analyzes of field hockey players have been developed. The analysis was made for shooting in the door by video recording from two high-speed video cameras. For each of the blows with the stick, kinematic analyzes were made both from a point of view in a direction perpendicular to the plane of the blow on the ball, and from a rear point of view relative to the athlete. The aim of the development is to establish significant statistical regularities accompanying the repeatability of the stability of the motor habit in the effective execution of the blows on the ball in the hockey goal. Methods The scale of the shooting covers the athlete in general shooting. 8 control markers placed on the front of the stick, the right wrist, the right elbow, the right shoulder, the right and left knees, the right and left feet were used in the video recording from the lateral point of view. The same model for marking control markers is used when shooting the athlete from a rear view. The criterion for the selection of the studied points is to be visible when shooting. Additional lighting is used to increase the contrast required for automated kinematic analysis. Results and analysis Statistical analyzes of the shocks during the shooting were made, including the limit values of the linear velocities of the examined points by the athlete’s body during the execution of the shot in the door. The statistical processing includes variation, correlation, regression and anatomical analyses establishing the stability of the motor habit when performing the stroke by different athletes from the national hockey team. Statistically significant correlation and regression models were established connecting the instantaneous velocity of the blow with the stick on the hockey ball and the instantaneous values of the examined points of the athlete’s body.
曲棍球比赛常规得分球执行可靠性的探索性研究
曲棍球运动员的生物力学分析已经发展起来。分析是通过两台高速摄像机在门内拍摄的视频进行的。对于每一次用棍子击打,运动学分析都是从垂直于击打球平面的角度和从相对于运动员的后方角度进行的。开发的目的是建立显著的统计规律伴随运动习惯的稳定性的可重复性在冰球球的有效执行打击球。方法射击量表以普通射击运动员为对象。8个对照标记分别放置在杆前、右手腕、右肘、右肩、左右膝盖、左右脚,从侧面角度进行录像。当从后视图拍摄运动员时,使用相同的模型来标记控制标记。选取研究点的标准是在拍摄时要清晰可见。额外的照明用于增加自动运动分析所需的对比度。结果与分析对射击过程中的冲击进行了统计分析,包括运动员在门内射击过程中身体对各检查点线速度的极限值。统计处理包括变异、相关、回归和解剖分析,建立了不同国家冰球队运动员在击球时运动习惯的稳定性。冰球棍击的瞬时速度与运动员身体各检测点的瞬时值之间建立了具有统计学意义的相关和回归模型。
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