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Serve vigorously

The act of hitting the hitting point with maximum acceleration

Federer Frequently use powerful service to suppress the opponent at the bottom line, and then volley on the Internet to score. During the service, his whole body naturally extends upward, and forces are sent from the legs, hips, waist and upper limbs in turn. At the end of the clap acceleration Hit the hitting point.

Chinese name: Serve vigorously

Purpose: With the largest acceleration Smashing into the hitting point

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Volleyball overhand serve

We can now see the following services on the court:

1. Frontal overhand spin ball. Its main characteristics are strong power, fast speed, can send out rotating balls in various directions, and easy to control the ball Landing point , especially tall, upper limbs Explosive power Strong Athletes Easy to master.

2、 Hook serve 。 This service is similar to the frontal overhand service. From the 1950s to the early 1960s, this service was more aggressive, and was widely used in the early 1960s Jib The aggressiveness of this service will be reduced correspondingly when the ball is set, and this service is more laborious, Error rate It is also relatively high, and sometimes there is a gratuitous imagination, which gradually tends to be eliminated.

3. Frontal overhand floater. It is achieved by linear acceleration of the forearm, fixed wrist and short and powerful force.

4、 Hook floater 。 Just after the ball is thrown out of the hand, when the ball is at zero, the right arm accelerates and flashes to a sudden stop, flying trajectory It is difficult to judge.

5. Jump serve. It is the most important and commonly used way of serving in modern volleyball. It has the following characteristics: close to the net, high hitting point, fast ball speed, strong force, great whip impact, and flat arc, which can effectively bring the opponent a pass Destructive Impact. The jump serve is different from the standing serve. Because it has a high swing point when serving and the hit point is over the court after taking off, the server no longer needs to consume energy to fight against gravity to raise the ball Initial velocity Instead, the ball is given the lower initial speed to attack the opponent Oblique downthrow motion As long as the hitting position and timing of this service are well controlled, the relevant muscle groups can be exerted to the maximum Muscle strength , which can produce extremely powerful and fierce whip when hitting the ball impact force Threaten the other party to the maximum extent and destroy the other party's technical and tactical system and normal psychological state.

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1. Key words: throwing the ball, the center of gravity of the body is in Federer's toss a ball When he stretched his hand upward focus Keep it on the back leg, which is also to facilitate the rotation of the hips and shoulders. The most notable thing about his serve is that he never throws the ball to the back of his body. In the process of lifting the thrower, Federer began to move his body's center of gravity forward. His clapping face and clapping hands point down to the ground, and his shoulders remain relaxed through this movement.

2. Key words: shoulder, knee

This is Federer's ready action. His throwing hand is fully extended, and his body is bent into a bow to exert force. Shoulders lean with one side pointing forward. It should also be noted that his elbow and shoulder are kept on the same axis, which can make him make nearly perfect throwing movements. His bent knees, as well as the rotation of his hips and shoulders, are difficult to imitate.

3. Key words: power generation, center of gravity

At the moment of hitting, Federer's focus Has been completely moved to his front leg. Up Kicking leg At the same time, his racket is placed at the back, the head of the racket is almost vertical to the ground, and the hand holding the racket is kept at a certain distance from the shoulder. These actions are elements of power generation.

4. Key words: hitting point, upper arm action Federer's hitting point is slightly left. When he was fully extended upward, the lifting force made his body leave the ground. Good stretching and natural upper arm movements are essential. At this time, his left hand also exerts force to maintain balance, which will reduce the speed of the hand swing, so as to achieve the whip action at the top of the racket head.

5. Key words: body balance

After Federer hit the ball inertia Take him to the court. His batter went down and made a free swing, while his other arm kept his balance. After Federer serves hard, he lands with his left foot first, so that he can either follow the ball to the net or stay at the baseline.

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Powerful serve makes it difficult for the opponent to parry Williams' fourth time at Wimbledon

Williams carefully stared at the silver plate of the champion for a long time, which was not strange to her, but she still wanted to take a look at it now. The third Wimbledon women's singles champion The winner won the championship for the fourth time this summer when she was 27 trophy 。 After only one and a half hours of the final, Venus defeated Black Horse Bartoli 6-4 and 6-1. Two years ago, she won the Wimbledon women's singles title as the lowest ranked 16th seed in her career at that time, which was also a record player The lowest ranking of. Now, this record has been broken again by herself. Wimbledon's 23rd seed, ranking 31st in the world, is the biggest player emerging from injury Wimble Deng ushered in a rebirth. When her sixth time Advance to the final of Wimbledon Later, a reporter once asked her about this match Are you satisfied? Williams said, "Why can't I go to the champion? I'm not going to sit down and say, 'Great, I'm in the final, that's the end.' I'm going to go to the champion." However, when she ushered in her first game, almost no one believed that she would be in the final, even her own. Until Wimbledon this time, Williams had experienced nearly two years of silence due to injury. Daily Telegraph Commenting on Williams' performance in this session of Wimbledon, he wrote, "Wimbledon forced her to Sherman Tank Williams had been sleeping all the previous season. She missed it Australian Open , and was out early in the third round of the French Open, coming to London with the 31st world ranking. " What needs to be added is that, Williams It is entering directly without warming up grassland competition season. At the beginning of Wimbledon, she almost played every game on the edge of the cliff. The first round was forced by the opponent to the point where he was eliminated after only two points, and the third round was overturned when he was 3-5 down in the final set. After that, however, she swept Sharapova 、 Svetlana Kuznetsova and Ivanovic 。 Even she can't explain this Roller Coaster The same performance, "How to say? This is about doing the right thing at the right time."

She was not challenged too much in the final, and serving hard was still the key to her victory. In this game, Williams scored 77% of the first serve. A reporter once described her power of serving, "In the face of her serve, her opponents have only hope Paolo Maldini Go and defend like that. " Bartoli has played quite well in this game Unforced error Only 9, even 3 less than that of Venus. But under the restriction of Venus, France People only have room to resist. She only has 7 points to score actively in the whole game, while her opponent is more than 4 times her. Williams called the physiotherapist for treatment twice in the game, and her thigh was even tied bandage 。 But the pain didn't stop her from fighting until the end, awarding ceremony At the same time, the former world number one who had struggled for two years cried with joy. At the moment, she also wanted to thank her family for their support. "My family is absolutely the key, and everyone here is the key. Everyone in this team knows what I have experienced this year, how much I have paid, and how important everything now is to me." Xiaowei is the one she particularly appreciates younger sister It is a great incentive for me to win the championship at the Australian Open this year with the 81st ranking. "I want to be like her. The last year I won Wimbledon, she also won the Australian Open." In the semi-finals, she defeated the young Ivanovic Later, someone asked David how she felt Serbia How far can one go on his career path. "As long as she continues to fight tenaciously," said Williams, "this is the essence of the sport."

Hook serve

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This service can make full use of the strength of turning and abdominal contraction to drive Arm Hit the ball with a strong swing. The ball is fast and powerful, Arc Low, Rotating force Strong, easy to cause the other party to receive the ball difficult, psychologically pose a greater threat to the other party. ' But because Hook serve The movements are more complex, the technical movements are required to be high, the error rate is large, and the energy consumption is also large. Therefore, at present, the use of volleyball is less.

1. Preparation position: left shoulder of server Ball net , feet open from left to right, shoulder width, knees bent, upper body leaning forward, weight between feet, left hand or both hands holding the ball vital points Look at each other with two eyes. 2. Throwing arm swing: the left hand or both hands smoothly throw the ball over the left shoulder, with a height of about 1m. At the same time, the right leg bends, the center of gravity moves to the right foot, the upper body rotates and tilts to the right, the right arm swings to the right side of the body, and at the same time, the chest is raised, eyes are fixed sphere 。

3. Swing the arm to hit the ball: when hitting the ball, the right foot pushes the ground hard, the body rotates to the left to drive the arm to swing upward along the arc track, and hit the ball in front of and above the right shoulder. At the same time, the weight of the body is shifted to the left foot, the arm is fully extended to maintain the high spot hitting, and the palms and fingers open naturally Spoon shape , hit the lower middle part of the ball with full palm, hit the ball for a moment Palm Make a quick and obvious forward push to make the ball spin upward. After hitting the ball, enter the game quickly.

Individual tactics of service The application of service techniques mainly depends on service team member Personal mastery. In the game, according to the changes on the spot, flexible use of various service techniques can achieve the purpose of attacking the other side Initiative It plays an important role. Therefore, each student is required to master a service technique skillfully, and on the basis of improving the stability and accuracy of service, strengthen the aggressiveness of service and improve the tactics Consciousness, according to the situation on the spot, reasonably use various personal tactics of service.

Tennis application

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Joachim Johansson's body is very coordinated when serving

To serve hard, you need to control your whole body. But if you're like Joachim Johansson (Joachim Johansson) is also 6 feet 6 tall, so it is not so easy to control your body. Many players shorter than Joachim Johansson are difficult to maintain when serving body Coordination of. They either can't use the whole body, or they have problems using it. The reason why Johansson's serve can be so explosive is that he can correctly use his great power. When the ball and his Racket A powerful serve is completed when it touches and produces a huge acceleration. 1. The focus is Johansson's swing arm. My view is to throw the ball at the shoulder height and keep the arm still. You can see Johansson's wrist and elbow joint There is hardly any bending, and fingertip Hold the ball. The ball thrown in this way will be easy to control.

2. Johansson kept his arm fully extended when throwing the ball. He still didn't use the strength of his wrist. The whole process was like lifting the ball. After that, his eyes will be raised with the ball being thrown up, and the opponent will pay attention to the line of throwing the ball. Please note that Johansson's legs are beautifully bent. His movements are not stiff or mechanical at all, even though he is 6-6 tall.

3. Continue to swing your arms upward until the ball reaches the highest point, which can help you turn sideways. At this time, Johansson forced his left hip forward. This is the first step to curl your body. His racket is still hanging at the height of his thigh, which is formed by the throwing of the ball time difference 。 This time difference forced Johansson to speed up his swing to hit the ball.

4. When Johansson's wrist is basically vertical, he starts to swing the racket. This process will last until the moment before hitting the ball. It is important to be ready to hit the ball in advance like this, so as to avoid arm a wrist More than actions. If the racket goes down action Contradiction and disharmony.

5. The ball is thrown in perfect position, just above the shoulder on the side of the racket grip. As the right foot moves forward, knee It is almost completely bent. Johansson's racket starts pointing sky , his body also began to court One side inclines.

6. This is the last step of curling the body. Johansson's shoulders have completely turned around, and he is ready to turn and exert his force. His left arm began to swing down, giving him room to hit the ball. The racket is still vertical, and the knee will be straight right away.

7. This step was successful crux 。 His racket swings down, producing a huge torque 。 At this time, his right hip is forced forward. The faster the force is sent, the greater the acceleration generated by the racket. Then the shoulder, arm and racket exert force in turn. 8. Bang! This shot is textbook It is perfect. At the moment when the racket touches the ball, the body is fully extended and in a straight line - from the racket to the arm and then to the left foot. The key is to keep your head up, which will keep you in a perfect position. Many players always keep their heads down.

9. Johansson's body continues to rotate. His left arm is pulled back to his upper abdomen to support his upper body, so that his body can no longer rotate. Notice the thumb of his right hand, which is now downward. This shows that the downward swing and force of the right arm and racket are sufficient.

10. This is a perfect end. Johansson raised his head, stood on his left foot in the field, and swung his right leg back to maintain his balance. stay natural While completing the rotation of the body, make the racket slide across the trunk. This is absolutely a beautiful and powerful action.

Less negative effects

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Distance is a great advantage. However, many long-distance golfers are eager to play advantage They are doubtful because they are worried that if they fail to serve hard, the number of strokes will increase. But when they try to change tactics Even when a conservative approach is adopted, the results are often unsatisfactory. Why? Because that doesn't show their true nature (At the same time, I can't enjoy playing pleasure )。 In order to have a correct understanding of your playing potential, first of all, you need to understand what the bad results will be after you vigorously kick off with your ability. Find one without any trouble (obstacle) Ball hole , and you usually don't need No. 1 there Wooden pole 。 Now serve three consecutive shots with No. 1 wood. Don't worry about the accuracy of a bold swing: the purpose of this is to let you experience the worst result of the kick-off. You may find that it is always possible to remedy the mistakes in the tee off - hit the ball back to the fairway with the second stroke, and then hit the ball with a short iron Upper green To ensure Boji's (more than one par) performance, and even have the opportunity to level par.

Now that you have understood the possible consequences of a missed kick-off, let's consider the good aspects. You will definitely play some good balls that can fall on the fairway Birds The chance of the ball (one stroke less than the par), and you may miss this opportunity with other methods. When you understand that serving hard will not ruin a round of play, your self-confidence It will increase greatly and keep you in a relaxed state of mind. You may achieve better results than before by playing in your favorite way.

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