体育运动前准备活动的目的和作用（The purpose and function of preparatory activities before physical training）.doc

体育运动前准备活动的目的和作用（The purpose and function of preparatory activities before physical training） To play a very important role in sports activities. The purpose is to prepare the body as soon as possible by the relatively quiet gradually transition to the motion state of tension, as the basic part of good physical and psychological preparation. Fully open joints, to avoid injury, the action range from small to large, well prepare for formal training. The process of finishing activities, contrary to preparation, is a good way to eliminate fatigue and promote physical recovery. It enables the body to move from a tense state of motion to a relatively quiet state. The strength of the decline, the physiological level gradually stable and reduced, the muscles of the pump effect of vein compression gradually decreased to a certain level. The activity of heart and lung consolidation activities gradually restored to the original state of the quiet, such as heart rate, decreased muscle vasoconstriction, visceral relaxation, capillary contraction, respiratory rate, oxygen has been repaid, and remove excess carbonate, helps to restore and improve the ease heart load and sports ability. Speed up the elimination of blood lactic acid, the positive significance of sports training and physical exercise is significant. Abstract: preparation activity is a conscious and purposeful physical exercise in physical education. It is an indispensable content and step. It is a process of gradual transition from a quiet state to a state of motion. Preparations for the role is to strengthen the body heat, breathing and circulation ability, reduce the viscosity of muscles and ligaments, increase its flexibility and extensibility, make joint activities to increase, improve the locomotory ability to work, so that the players get the best motion state in physiology and psychology. Finishing activities, is in training or do the game after some mild or moderate exercise. This exercise will restore is comp