通过分析当今世界中长跑训练中的一些新变化,发现速度素质是中长跑运动成绩提高的主要因素。在训练中渗入大量的高强度、短距离跑的内容已成为世界中长跑训练发展的新趋势,也是中长跑运动成绩不断提高的重要保障。 By analyzing some new changes in long-distance running training in the world today, we found that speed quality is the main factor in the improvement of middle-distance running performance. The infiltration of a lot of high-intensity, short-distance running content in training has become a new trend in the development of long-distance running training in the world, and it is also an important guarantee for the continuous improvement of the performance of middle-distance running.