一、背景与思路途中跑技术是快速跑的重要组成环节,在稳定步频的条件下提高步幅是提高快速跑成绩的重要途径。在以往的教学中,多利用后蹬跑、下坡跑等方法解决步长问题,由于后蹬跑自身就具有较高的复杂性,以及坡道条件、授课时间的限制等原因,改进步长的 First, the background and ideas En route technology is an important part of rapid running, step-by-step in the conditions to improve the stride is to improve the performance of fast track an important way. In the past teaching, the use of back-run, downhill run and other methods to solve the problem of step size, because the pedal run itself has a higher complexity, as well as ramp conditions, teaching time constraints and other reasons, to improve the step of