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当短跑的运动成绩提高到一定水平时,会出现停滞不前,难以提高的现象——速度障碍现象。 有不少体育教师问我,已经产生了速度障碍怎么办?从理论讲,突破速度障碍是可能的,因为任何技能的形成,无一不是在大脑皮层形成条件反射,并形成动力定型的结果。动力定型使运动员的技术动作在空间特征上得到固定,在时间特征上也固定下来,而形成动力定型的空间特征和时间特征消失的速度不相同。空间特征比时间特征稳定
When the d sprinter’s athletic performance improved to a certain level, there will be stagnation, it is difficult to improve the phenomenon of speed obstacles. Many physical education teachers asked me what has happened to the speed barrier? From theory, it is possible to break through the speed barrier, because any skill formation is the result of conditioned reflex in the cerebral cortex and the formation of dynamic stereotypes. Dynamic shaping makes the technical actions of athletes fixed in the spatial features and fixed in the temporal features, while the spatial features and temporal features of the dynamic stereotypes disappear at different speeds. Spatial features are more stable than time features