体育教学是学校体育的一项重要工作,衡量教学质量高低的因素,固然是多方面的,但是,运动量和练习密度安排的适宜与否,是重要因素之一。美国生理学家劳伦斯认为以脉搏120—140次/分为指标,可以对人体产生良好的影响,这是值得重视的。适宜的生理负荷,是保证体育锻炼促进身体全面发展的重要条件。运动量小,增强体质的效果不大;反之,运动 Physical education is an important work in school physical education. Although the factors that measure the quality of teaching are many, it is one of the most important factors that suit the physical exercise and practice density. Lawrence of the United States that the physiology of the pulse of 120-140 times / divided into indicators, can have a good impact on the human body, it is worth attention. Appropriate physiological load, is to ensure that physical activity to promote the all-round development of the important conditions. Small amount of exercise to enhance the physical effect is not; the other hand, exercise