论文部分内容阅读
决定某个体育项目活动量的大小,一般是根据幼儿的心率变化估计。人的心脏随着年龄、性别的不同,每分钟收缩次数有一定的规律。当体育活动时,肌肉收缩频繁,需要大量的氧气供给,同时由于肌肉活动所产生的废物二氧化碳也要排出体外,因此心脏收缩加快,使血液更快地输送氧气到身体各器官,并加速运走二氧化碳,根据这原理,体育活动量越大,心脏的收缩越快,心跳也就越快。如果
The size of a sports activity is generally estimated based on changes in the heart rate of a child. Human heart with age, gender, the number of contractions per minute have a certain law. When physical activity, muscle contraction frequently, requires a lot of oxygen supply, and as muscle waste generated by the activity of carbon dioxide have to be excreted, so the contraction of the heart faster, so that the blood faster delivery of oxygen to various organs of the body and accelerate the removal of Carbon dioxide, according to this principle, the greater the amount of physical activity, the faster the heart contraction, the heart rate faster. in case