体育课上的运动负荷包括运动量和运动强度,运动中只有负荷保持适宜,才能达到较好的锻炼效果。体育课上运动负荷安排过大或过小,都难以达成体能锻炼的目的,同时还会影响到运动技能的学习。就体育教学设计而言,不仅要安排负荷合理,而且还要绘制相对比较准确的负荷曲线图(或心率曲线图)。然而,目前存在哪些绘 The exercise load in PE class includes the amount of exercise and the intensity of exercise. Only the load in exercise can be maintained properly to achieve a better exercise effect. Physical exercise class exercise load is too large or too small, are difficult to achieve the purpose of physical exercise, but also affect the learning of motor skills. In physical education design, not only to arrange the load is reasonable, but also to draw a relatively accurate load curve (or heart rate curve). However, what are the current paintings?