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一、准备活动的作用准备活动是体育与健康实践课重要环节之一,科学的准备活动,对预防运动损伤起到举足轻重的作用。它可以降低肌肉的粘滞性,增加肌肉、韧带的弹性和伸展性,提高肌肉的收缩和舒展的速度以及动作协调性,避免因肌肉剧烈收缩造成的损伤;克服内脏器官的惰性,减轻开始运动时由于内脏器官的不适应所造成的不适感;使大脑皮层处于的兴奋状态提高神经系统的兴奋性。准备活动使人体尽快地由安静状态进入工作状态,为基本部分的学习做好充分的生理和心理准备。
First, the role of preparatory activities Preparatory activities is an important part of physical education and health practice class, scientific preparatory activities, to prevent sports injuries play a decisive role. It can reduce muscle viscosity, increase the flexibility of the muscles, ligaments and extensibility, improve muscle contraction and stretch speed and coordination of action, to avoid severe muscle contraction caused by injury; to overcome the inertia of internal organs, reduce the start of exercise When due to the discomfort of visceral organs caused by discomfort; the cortex in the excited state of the nervous system to enhance excitability. Preparatory activities to make the human body as soon as possible from a quiet state into working condition, for the basic part of the study to make full physical and psychological preparation.