1. The physical exercise method is to develop physical fitness, ethnic form exercise, natural factor exercise and running fitness according to different ages and genders.
2. Physical quality generally refers to the strength, speed, endurance, agility, flexibility and other functions of the human body in activities. Physical fitness is the external expression of a person's physical strength.
Second,
1, so that the various organs and systems of the body can get proper activities in advance, prepare for gradually improving the intensity of exercise and doing various sports actions, and prevent injury accidents.
Increase muscle temperature and prevent exercise operation. A certain intensity of warm-up activities before physical exercise can strengthen the metabolic process in muscles and increase the temperature of muscles.
Improve the functional level of internal organs. One of the functional characteristics of internal organs is the great physiological inertia. When the activity begins and the muscles exert their maximum functional level, the internal organs cannot immediately enter the "best" activity state.
Adjust your mental state. Physical exercise is not only a physical activity, but also a psychological activity. Now more and more researches think that psychological activities play a very important role in physical exercise.
2. First of all, exercise can improve mood. Going to exercise when you are depressed can effectively vent your bad emotions. Especially after setbacks, impulses can be sublimated or transferred.
Secondly, sports can cultivate people's will. Participating in sports helps to cultivate people's brave and tenacious style, the spirit of unity and friendship, and the qualities of wit, flexibility, composure and decisiveness, so that people can maintain a positive attitude.
Third, exercise can make interpersonal relationships harmonious. Because of the collectivity and openness of sports, interpersonal communication in sports can promote the development of good interpersonal relationship, harmonious relationship and unity and cooperation.
Fourth, exercise makes people know themselves correctly. People's satisfaction with their bodies in sports can enhance their self-confidence and self-esteem; Competition makes its social value recognized.
Fifth, exercise can promote behavioral coordination and moderate response. Sports are mostly carried out under the requirements of rules and regulations, and every athlete will be bound by rules, so sports play an important and positive role in cultivating people's good behavior norms.
Finally, sports can cultivate a sense of cooperation and competition. Cooperation and competition are the requirements of modern society for talents.
3. Prevention: It is intended to strengthen the strength and flexibility exercises of muscles in fragile parts, and at the same time, it is necessary to make full preparations and reasonably arrange the amount of exercise to achieve the purpose of prevention.
Treatment: If there is strain during exercise, you should stop exercising in time and relax immediately.
To find out whether the injury is serious, you can twist it gently, determine the position of the strain, find some ice cubes, and ice it first to prevent the injury from getting worse.
Slowly stretch the wound. If you stretch to the point where you feel pain, you should stop and recover. This can relax muscles and promote blood circulation, and the injured part will heal faster, but be careful not to overstretch, and stop when it hurts, otherwise it will be counterproductive.
Massage can promote blood circulation, increase blood flow, relax muscles and speed up recovery.
A few days after strain, you can use hot compress, hot towel or warm bag for about 0/5 minutes each time.
Don't take part in sports and training if the strain is not completely good. Don't exercise until you feel completely better from the strain. When you start exercising, you should start with light exercise and then gradually increase your exercise weight.
Third,
The World Health Organization has put forward ten health standards:
1, have enough energy to cope with the pressure of daily life and work calmly. 2, optimistic, positive attitude, willing to take responsibility, not picky about the details of things. 3. Be good at rest and have a good sleep.
4, strong adaptability, can adapt to various changes in the environment. 5, can resist the common cold and infectious diseases.
6. Proper weight, even body, and coordinated posture, head, shoulders and arms. 7, bright eyes, sharp reaction, eyelid inflammation.
8, teeth clean, no cavity, no pain, normal gum color, no bleeding. 9, the hair is shiny, no dandruff.
10, the muscles and skin are elastic and easy to walk.
Golf: hit the ball near the opponent's baseline with a high arc to weaken the opponent's offensive power and consume his physical strength.
Drop ball: The ball hit by the opponent is gently returned from the backcourt to the area in front of the opponent's net, which is called drop ball. It is a batting technique to mobilize the opponent, disrupt the opponent's position and cooperate with tactics.
Kill the ball: it's a high ball played by the opponent. Try to buckle it at the high hitting point. This kind of ball is powerful and fast, which mainly includes three techniques: forehand kill, backhand kill and round head kill.
Before putting the net: gently support the opponent's hanging ball or the ball in front of the net with the racket, so that the ball will fall down as soon as it passes the top of the net.
Rub the ball: it is a development of the ball technology before releasing the net. When the hitting point and the shoulder are the same as Takaso, the bottom of the ball holder is rubbed by actions such as rubbing, cutting and picking, so that the ball changes its normal running trajectory in the air, causing it to roll along the horizontal axis or rotate over the top of the net along the vertical axis.
Push the ball: it is to cooperate with the fake action in front of the net and suddenly push the ball to the bottom corner of the backcourt when luring the opponent to surf the net.
Hook ball: this is a corner kick, which is returned in front of the net. It is often used in combination with wiping and pushing the ball to achieve the effect of diverting attention.
Make-up: It is a common offensive technique in doubles. When the opponent serves or returns the ball in front of the net, the arc of the ball is high when it passes the top of the net, that is, it quickly steps up and kills in front of the net.
Pick a lob: It is to pick up the lob or the ball in front of the net played by the opponent and return it to the opponent's backcourt. This is a defensive technique adopted in a relatively passive situation.
Draw the ball: it is a way of hitting the ball flat and flying over the net. In hitting the ball, the hitting point is on both sides below the shoulder, which is an offensive technique with faster hitting speed and is often used in doubles.
Catch-and-kill: it is a kind of play that turns defense into attack, which is divided into blocking the front ball, drawing the back ball and picking the high ball.