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人们在从事比较剧烈运动之前,都知道需要做一些准备活动,目的就是使人在生理和心理上做好准备,克服神经机能惰性,加快运动神经传导作用和反应速度,使人体尽快地由安静状态进入工作状态。运动生理学理论告诉我们:准备活动促使血液循环加快,需氧量增加,机体的代谢速度加快,还能使体温略微升高,肌肉、肌腱的弹性、伸展性等处于良好的状态,提高肌肉的收缩力和速度以及动作协调性,避免运动损伤。小学体育教师一般都比较重视体育课中的准备活动,因为他们深知认真做好准备活动直接关系到基本部分的学习乃至整个体育课的任务完成。但在实际教学中,由于学生对准备活动的认识不足,有的学生思想活跃,好奇心强,只重视基本部分学习,对准备
Before engaging in strenuous exercise, people know that they need to do some preparatory activities in order to make people physically and mentally ready to overcome their neurological inertia, speed up motor nerve conduction and speed of response so that the human body can move from a quiet state Into working condition. Exercise physiology theory tells us: Preparation activities to promote blood circulation, increased oxygen demand, the body’s metabolic rate to speed up, but also to slightly increase body temperature, muscle, tendon elasticity, extensibility in good condition and improve muscle contraction Force and speed, as well as motor coordination to avoid sports injuries. Primary school PE teachers generally pay more attention to the preparatory activities in physical education because they know that careful preparations are directly related to the basic part of the learning and the completion of the task of physical education. However, in actual teaching, students are not active enough in preparing for activities. Some students are active in thinking and strong in curiosity. They only pay attention to the basic part of study and prepare for them