中长跑运动是一项速度快、节奏强、时间长、消耗能量大的运动项目。决定中长跑运动成绩的主要因素是耐力和速度耐力。耐力是指长时间运动的能力,速度耐力是在一定速度下长时间运动的能力,耐力是速度耐力的基础,速度耐力是耐力的发展与提高,耐力是有氧呼吸为主,而速度耐力是以无氧呼吸为主。一个优秀的中长跑运动员不但具备 Middle-distance race is a fast paced, long-term, energy-intensive sports. The main factors that determine the performance of long-distance running are endurance and speed endurance. Stamina refers to the ability to exercise for a long time, speed endurance is the ability to exercise at a certain speed for a long time, endurance is the basis of speed endurance, speed endurance is the development and improvement of endurance, endurance is aerobic respiration, and speed endurance is Anaerobic respiration. An excellent middle-distance runner not only has