2. The position and height of hitting the ball are very important. The position and height of hitting the ball should be slightly in front of and above the same side of the hitting arm, and the elbow joint should be completely straight. If the hitting position is behind the shoulder, it will increase the burden on the shoulder and slow down the hitting speed. When spiking, you should also pay attention to the following matters: when hitting the ball, the elbow joint should be fully extended upward, the fingers should be naturally opened to make the palm spoon-shaped, and the wrist should be shaken with the whole palm to hit the ball, and then the ball should be wrapped up instantly when touching the ball, and the wrist should be shaken vigorously. Also remember to decide the direction of spike in advance. When spiking, don't hit the ball blindly. You should choose the breakthrough point according to the opponent's blocking situation and smash it purposefully. When spiking, it is very important to hit the ball at the highest point after jumping up and keep your body balanced and stable.
3. Most of the power of serving and spiking comes from "torque", which is the same as the twisting action used by baseball pitchers in the pitching area. Volleyball attackers must do this in the air. Players need to get strong torque by "opening the door (expanding the body)", sometimes called "pulling the bow". The key is to stretch after take-off. When you swing your arm quickly, close the door with maximum strength and speed and close it quickly. Just like throwing an arm, timing is crucial, and it takes a long time for most players to learn.
4. The take-off action of volleyball players' final spike can be divided into three stages: buffering, equal-length braking and pedaling. The proportion of each stage in the total take-off time is an important factor affecting the structure of the take-off stage of spike, so attention should be paid to the rationality of the structure of the take-off stage in training; The change characteristics of hip, knee and ankle during take-off show that the extensor of lower limbs has completed the contraction of "lengthening-shortening cycle", and the super-isometric strength quality training of extensor of lower limbs should be strengthened in training.
5. Volleyball players' plantar pressure changes with time in the final spike and take-off. The change of plantar pressure with time is an important factor affecting the take-off effect. Therefore, attention should be paid to the training of athletes' quick take-off ability in training; The order of the peak plantar pressure at different parts of the right foot during take-off shows that the distribution of plantar pressure of volleyball players is transitive. Therefore, when choosing special strength training, we should choose methods and means similar to this feature.