By using the methods of literature review, expert interview and logical analysis, this paper analyzes the concept, function, influencing factors and improving methods of volleyball players' pre-judgment ability. The results show that anticipation plays an important role in the first pass, the second pass, the offensive hitting and the defense. The main factors that affect pre-judgment are: attention quality, will quality, information reserve, sphericity and nerve excitement.

Keywords volleyball players' expectation

By using the concepts of literature review, expert interview and logical analysis, this paper analyzes the function, influencing factors and improving methods of volleyball players' forecasting ability. The results show that anticipation plays an important role in the first pass, the second pass, the offensive shooting and the defense. The main factors affecting pre-judgment are: note quality, willpower, information reserve, sphericity and nerve excitement.

Keywords: Predicting volleyball players

Pre-judgment plays an important role in volleyball. 12 players on the field should always predict the form of the game and the direction of the ball. Psychological factors and nerve excitability affect athletes' prediction ability. How to improve athletes' pre-judgment ability is a very important topic.

First, the definition of volleyball players' anticipation ability

Pre-judgment refers to the process that athletes estimate, judge, analyze and take corresponding countermeasures in the competition. The predictive ability of volleyball players refers to the ability to judge, analyze and control the direction of the ball and the use of tactics on the court.

Second, the important role of anticipation ability in volleyball.

The server should predict in advance which area the ball should be sent to, which area is the weak area, and so on; A passer should predict the curvature, strength and direction of the ball, and also judge whether it is an out-of-bounds ball or an in-bounds ball, make preparations for catching the ball in advance, and so on; The setter should predict whether a pass is in place, predict the height and direction of the pass according to the position and running position of the players on the field, and prepare for blocking in advance; Attacking players need to observe the timing of the second pass, the speed and radian of the ball, the changes of body shape during the second pass, and predict whether to play fast ball or semi-high ball; Defenders should predict the route, strength and tactical intention of spike, block and follow up in time, stop or prevent the ball.

Third, the influencing factors of volleyball players' pre-judgment ability

(1) Attention quality: Volleyball competition takes a long time, which requires high attention stability of athletes, especially in the case of interference. Whether you can concentrate highly is often the key to whether you can play a high level. The higher the degree of attention, the clearer and more vivid the reflection of things, and the more able to eliminate internal and external interference.

(2) Will quality: In volleyball match, good will quality can calmly deal with and deal with all unexpected problems on the volleyball court. In difficult times, we can maintain a good state and make a calm prediction to ensure that the prediction will not be affected.

(3) Information storage: All kinds of behaviors made by volleyball players are based on information collection. They were able to make reasonable decisions in a short time because they organically combined their own experience with all kinds of feedback information at that time and made correct analysis and prediction. Therefore, information reserve is the basis of pre-judgment.

(d) Sphere: To train athletes' predictive ability, we must first be familiar with the sphere. We should feel the weight of the ball, observe the shape of the ball, understand the hitting point and flying direction of the ball, get familiar with the ball and get a sense of the ball, so that athletes can control the ball as flexibly as they control their own bodies, so as to make correct predictions.

(5) Nerve excitement: People's actions are controlled by nerves. Only when the nerves reach a certain degree of excitement can the brain collect and process the information on the field, mobilize the existing information reserves and actively predict.

Fourthly, the method of improving volleyball players' prediction ability.

(a) training or competition in stages, pay attention to cultivate athletes' keen observation. In training, the blocker is required to predict the passing direction according to the situation on the court and pay attention to the situation on the court. At the beginning of practice, there are often misjudgments, and athletes are required to constantly sum up experience. It is believed that after long-term systematic training, blockers will get more important information from it and ignore irrelevant stimuli, thus improving athletes' prediction ability. Volleyball players should make a comprehensive and detailed observation of complex matches and carefully screen the most valuable information. In this way, athletes can form the habit of careful observation in the competition, thus providing more practical experience raw materials for pre-judgment.

(2) Volleyball technical practice is boring, unlike basketball, which has diversity and needs persistence. You can't be half-hearted when practicing, otherwise it will affect the practice effect. Proficiency in every technology has to go through a gradual process, so we should practice frequently, persevere and persevere. Coaches should consciously adopt the methods of increasing difficulty and overload training to exercise athletes' will quality in training.

(3) Consciously let the athletes master and summarize the rich technical and tactical experience and laws gained in training and competition, deepen their impression, and emphasize that the athletes should organically integrate these factors in their minds to form a solid and systematic practical experience, so as to lay a good material foundation for the development of volleyball players' blocking cognition, judgment and decision-making ability in the competition. It is also a good way for athletes to accumulate rich experience by watching the video of the game to understand their opponents and cultivate the prediction ability of blocking players, such as asking athletes to quickly judge the passing direction before the opponent passes the ball for the second time.

(4) Put the ball in front of you, observe the ball from different angles, then touch the ball with your hands, feel the ball from all angles, and finally close your eyes and imagine the appearance and feeling of the ball in your mind. You can use one person's rolling, patting, throwing and catching the ball, swinging the ball on the back of the palm, throwing and passing the ball, or you can use two or more people with different distances, different directions, different heights, different speeds and different strengths to pass and catch the ball.

(5) Players should ensure adequate sleep, influence and energy. In addition, the coach should use his own way to mobilize the excitement of the players.

References:

[1] Cao. Improve the ability to predict and improve the consciousness of volleyball players [J]. Juvenile physical training 2005.03.25.

[2] Jiang Yuxing. Pay attention to the prediction of volleyball offensive's fake action [J]. Volleyball in China+0994+0: 37-38.19867.1008888888886

[3] Li Yujuan. Discussion on the main influencing factors of juvenile volleyball players' defensive anticipation ability [J]. Hope Monthly (first half of the year). 2007+02: 302-303。

[4] Zhang Wuping. On the pre-judgment ability and training of defenders after volleyball match [J]. The world of entrepreneurs (theoretical edition) .2011.07: 213.

[5], Zhang, Study on the characteristics of pre-judgment of excellent volleyball players-using? Spike. For example [J]. China sports science and technology .2012.04: 46-51.

[6] Xiao Jingya, Li,. Factors affecting volleyball players' prediction ability and countermeasures [J]. Examination Weekly.2011.25:147-148.

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