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中距离跑是青年女学生较难达到良好成绩的运动项目之一,现在规定的距离是800米。由于中距离跑时,导致机体能量供应方式复杂化,所以对中枢神经系统、心血管系统、呼吸系统及骨骼肌的有氧代谢和无氧代谢等机能都有相当高的要求,在一定范围内,运动强度与心率及吸氧量呈线性关系。根据国内外文献记载,中跑到达终点时每分钟心率可以达到200次以上,心脏机能是限制机体摄氧的中枢因素,要提高青年女学生中距离跑的能力,提高学生的心脏机能是十分重要的。运动时的心率基本上反映运动强度的大小,也与其它各种生理系统机能变化大小密切相
Running in the distance is difficult for young female students to achieve good results in one of the sports, and now the distance is 800 meters. Due to the complexity of the energy supply mode of the body when running in the middle distance, there are quite high requirements on the functions of aerobic metabolism and anaerobic metabolism of the central nervous system, cardiovascular system, respiratory system and skeletal muscle. Within a certain range , Exercise intensity and heart rate and oxygen consumption was linear. According to the domestic and foreign literature, heart rate reaches up to 200 times per minute when the runner reaches the end. Cardiac function is the central factor limiting the oxygen uptake of the body. It is very important to improve the ability of the young female students to run in the distance and improve their heart function of. Heart rate during exercise basically reflects the size of the exercise intensity, but also with a variety of other physiological system function changes in close phase