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Let's look at a golfer's question in questions area on Pingpong.com. He said that when watching game of a professional athlete, swing of racket and rotation of waist is very small, but quality is very high, while movement of amateur golfer is very large, rotation range of waist to lead racket is very large, but quality is not high. cause?
One, turn your waist
(1) Waist Rotation Target
The purpose of turning waist is to better coordinate load of lower and upper limbs. Since waist and hips are engine of body, they connect lower and upper limbs, so rotation of waist and hips can be better coordinated.
When force acts on entire limb, it is not waist that actually rotates, but hip joint. Only joint can control rotation of other parts. does not mean high quality.
(2) Waist rotation effect
1. Use power to fullest
When attacking from right, right-to-left swing and racket swing are obvious, but he doesn't have much speed.
On contrary, when backhand bounces, lower back hardly turns, movement is very small and hasty, but quality of ball bounce is very high.
The key to this core is that waist is only there to assist upper limbs in applying force. This does not mean that quality of waist rotation is high. The quality is very high, but it's just that you can not move your waist. If you just lean on your hands to play (remove belt), movement will be uncoordinated. Whether it's shifting center of gravity, recovery, or all strength, it will not be smooth.
Rotating waist and hips can force arm to apply more force, meaning that step from pulling racket to hitting ball is most important.
2. Rotate center of gravity
Besides, turning waist can better complete transformation of center of gravity. It really doesn't really matter where action is after ball is hit, it's just inertia.
Second, range of motion
(1) Movement around stage should be small
After forehand pulls ball forward, racket goes over top of head. It makes no sense to do what you do after hitting racket. To stop it.
When Liu Shiwen constantly pulls her front near stage, her movements are very small and her movements end in front of her body. The frequency of waist twists and kicks is not too high, but very much. The advantage of this is that strength is more concentrated and recovery is faster, which is convenient for forehand and backhand near table to quickly switch and swing. A really high level athlete can use smallest movements to achieve highest quality.
Some balls don't spin very much, and backspin is not very strong. Don't pull too hard on racket or wait too long for ball. If backspin is not too strong, you can pull racquet a little below table surface. No matter how big movement is, power will be easily lost.
(2) COSCO Taiwan's activities are intensifying
If you retreat to COSCO platform, racquet span (waist twist) can be increased, this is to create a better arc, because small movements alone are not enough to create an arc of ball, so you need to pull racquet The movement of ball increases and entire swing range increases to create a better arc on stage. This is only necessary when ball is far away. If it is close to stage, it does not need to do this, and there is no need to create such a high arc, so understand this truth.
This is end of today's answer. If you have any technical questions about table tennis, you can ask them on Table Tennis Network.
Ping-pong network organized by Liu Baosheng
November 10, 2023