在体育中考项目中,50m跑在三个考试项目中所占分值最高,是一个重头项目。跑的技术的好坏是决定成绩优劣的关键。所以我们在日常训练中要特别强调技术训练,注重动作技术的细节的纠正是训练的重要环节,也是运动成绩提高的根本。影响短跑成绩的主要因素有步幅和步频,本文主要针对这两点进行分析。1.步幅和步频1.1概念步幅:就是指一步的距离,以脚的中心算,两脚中心的距离就是步幅;步频:即脚步的频率,是两腿在单位时间内交替 Among the PE exams, the 50m race has the highest scores among the three exams and is an important project. The quality of running skills is the key to determining the pros and cons of your grades. Therefore, we must pay special attention to technical training in daily training, focusing on the correction of the details of motor skills is an important part of training, but also the basis for improving athletic performance. The main factors affecting the performance of sprint stride and pace, this article mainly for these two points for analysis. 1 stride and pace 1.1 concept stride: refers to the distance step to calculate the center of the foot, the distance between the center of the foot is the stride; pace: the frequency of footsteps, legs alternating in unit time