实效性要根据教材的练习强度、负荷大小、技术动作原理,选择放松的内容和形式。如,基本部分是耐久跑,在结束部分做放松活动时,就不能简单地做徒手放松操,而要有对腿部肌肉的专门放松活动,尤其是一些静力牵拉活动,可促进肌纤维恢复有序排列。灵活性在安排放松练习时,要注意运用各种手段、方法和技巧来丰富课堂教学,提高教学效益。如可以采用韵律放松、手语放松、激趣放松、游戏放松、意念放松等;在队形上也可以 Effectiveness of teaching materials according to the intensity of practice, load size, technical action principle, choose to relax the content and form. For example, the basic part of the long run, in the end part of the relaxation activities, you can not simply do free hand exercises, but to have special relaxation activities on the leg muscles, especially some of the static traction activities can promote muscle fiber recovery Orderly arranged. Flexibility In arranging relaxation exercises, we should pay attention to using various means, methods and techniques to enrich classroom teaching and improve teaching effectiveness. Such as the prosody can be used to relax, sign language relaxation, excitement to relax, relax the game, the idea of ​​relaxation, etc. Also in the formation