某些运动员在前半程遥遥领先,但在后半程由于各种原因被超越,这种现象时时出现在比赛现场。主要原因是经过长时间的途中跑身体堆积了大量的乳酸,导致体力不支,动作技术变形、两腿发软。笔者通过这几年对高中生中长跑训练的实践,特别是对后半程训练的一些方法和经验与同仁分享。 Some athletes are far ahead in the first half, but are surpassed in the second half for various reasons. This phenomenon always appears on the competition scene. The main reason is that after a long period of running the body piled up a lot of lactic acid, resulting in stamina, deformation of motor skills, his legs weak. The author through these years of high school long-distance training in high school practice, especially for the second half of training methods and experience to share with colleagues.