TECHNICAL PRINCIPLES OF BADMINTON

TECHNICAL PRINCIPLES OF BADMINTON

1. Rules of flight on demand: With the design characteristics of the result, when flying in the required space, always fly according to a certain rule, which is the base of the bridge to fly first, the wing of the bridge to fly after. To do an effect path, the athlete needs to orient the flight on demand in order to contact the required sole with a theoretical angle. Depending on the tactical intentions of marking the request to go far or near, straight or diagonal, athletes use hand and body angles accordingly. There are 3 basic guidelines as follows: - The shuttlecock flies parallel to the court surface when the opponent takes the shot, the athlete makes contact with the shuttlecock with a racquet angle of 900. - When the opponent makes the javelin. , the incoming bridge has a downward direction, not perpendicular to the ground, the contact angle is from 130o - 145o.- In case the opponent performs high and deep demanding lines, requires a free drop in the direction of the field, the bridge will knife contact angle from 160o - 175o

2. The stages of hitting the shuttlecock: In badminton practice and competition, to create hitting power in accordance with the tactical intentions, in addition to the coordination of forces.

of the whole body, athletes mainly use racquet movements of the arms, forearms and especially the bending and opening of the wrists to create force to hit the ball. The stages of a shuttlecock movement include pulling the racket, swinging the racket, contacting the shuttle, stopping the racket and returning to the initial preparation position.

2.1. Racquet draw phase: The stage is started from the initial preparation position, bringing the racket behind the shuttle contact point until the racket is stopped at the point farthest from the shuttlecock. At this stage, the force arises mainly from the shoulders and body rotation movements. The greater the force required to hit the shuttlecock, the greater the amplitude of the arms and the greater the body rotation. The end of this phase is when the racket is stopped and the rubber is behind the handle. 

2.2. Racquet stage: This is the next stage performed from the moment the racquet is stopped at the point furthest from the shuttle contact point to the time of contact. At this stage the racquet is always brought from the back to the front in the same direction as the shot. The racquet face always goes behind the hand holding the racquet until the racket is about to hit the shuttle.

2.3. Bridge contact phase: This is the shortest but most important phase of the other phases. At this stage, the athlete uses the wrist movement (bend or open) to bring the racquet head forward faster to create a sudden force impact on the ball. Athletes must at the same time adjust the angle of the racket to contact the shuttle and use the force to act on the ball appropriately to be able to control the shuttlecock to go far or near, high or low, straight or diagonal according to the tactical intentions. Both of the above factors require the practitioner to have the skill of controlling the racket by the wrist very delicately and correctly (skills). The moves to deceive the opponent effectively or not also need to be done well at this stage.

2.4. Racquet stopping phase: The period from after contact with the shuttlecock until the racket is stopped. The stronger the hitting force, the greater the inertia, the longer this period. However, because the weight structure of the badminton racket is not large, and the force generated when hitting the shuttlecock depends greatly on the wrist flexion movement, so the practitioner needs to actively stop the racquet to prepare for the next shuttlecock. 2.5. About the initial preparation posture: The final stage of a sequence of technical actions. The development of modern badminton is concurrent with the improvement of comprehensive technique and increasing speed of hitting the shuttlecock. Therefore, bringing the racket to the initial preparation position immediately after each shot is an indispensable element in the movements of a technique and only then can the players actively perform the next moves. continuously throughout training and as well as playing badminton. Returning to the initial preparation position must be perfected smoothly in any technical situation. All 5 stages above are formed as a closed cycle in each shot. They take place one after another, continuously and repeatedly as long as the bridge is in play.

The incompleteness of any stage of the technique will also adversely affect the effectiveness of the shuttlecock movement and vice versa.

According to the calculation formula: F = m * a (f is force, m is mass, a is acceleration), we see that the power depends on the mass and acceleration of the object's motion. Therefore, to increase strength, we must increase the mass of the object or increase the acceleration of the object. However, because the rules of the game in badminton are not allowed to change the mass (weight) of the racket and shuttlecock, so If you want to increase the power, you must increase the acceleration of the object's motion (ie increase the speed of the ball). In order to increase strength in a shuttlecock movement, athletes need to judge the correct drop point, choose the appropriate shuttle contact point, coordinate the movement appropriately, increase the amplitude of the racquet, increase the speed of the racket by accelerating. the contractility of the muscle groups involved, especially the flexion and opening of the wrist when contacting the bridge. Since then, it has created great acceleration for the ball and increased strength in badminton.3.2. Speed ​​The second factor in playing badminton is speed. If performing the bridge at a fast speed, it will put the opponent in a passive position, from which the athlete will take the initiative and have more chances to score. Therefore, in badminton competition, the athlete who performs this factor well will have the upper hand on the court.

In order to manipulate the falling point factors in competition, athletes need to pay attention to perform various variable demand curves such as short or long, high or low, straight or diagonal to control the bridge into different points on the opponent's court. Especially in the 2 corners near the net and the 2 bottom corners of the opponent's court, or in the position farthest from the opponent. Combine with the elements of strength and speed flexibly to surprise the opponent. 4. How to hold the racket: Each swing has its own way of holding the racket. Different athletes may also have different grips for the same technical movement. Hitting the shuttlecock from different angles or hitting the shuttlecock with different lines and falling points also has a way of holding the racket corresponding to the angle and path of the ball. But all of those things need to ensure the principle of making it easy for the process of generating and transmitting force to the ball, and at the same time in accordance with the requirements of uniformity and mutation of technical movements. Another way is that the way to hold the racket in badminton techniques is very diverse. However, it can be divided into 2 ways of holding the racquet as follows: 4.1. How to hold a forehand racquet:

In general, all low- and high-range forehand swing moves use this grip. Use your fingers to hold the racquet, absolutely do not hold the racquet deep into the palm of the hand, it will not be flexible while adjusting the racket. At this time, the thumb and second knuckle of the index finger grasp the 2 wide sides of the racquet handle, 3 The other finger grasps the 1/3 of the racket handle below the index finger about 1-1.5cm and firmly rests on the palm. The racquet handle fits the palm of your hand. The racquet face is perpendicular to the ground. 4.2. How to hold a backhand racket:

On the basis of the forehand grip, the thumb and forefinger rotate the racquet handle slightly outward, the tip of the thumb rests firmly on the wide inside of the handle, the second knuckle of the index finger rests on the wide outside of the handle, the fingers The other closes tightly to grip the racket handle about 1-1.5cm below the index finger. Depending on the point of hitting the shuttlecock far or close to the person, it is possible to hold the full length of the handle or shift it to the top of the handle. This grip is used to hit the backhand bridge, or the bridge line in front of the body. These are the two most basic ways of holding a racket in badminton, but depending on different situations, tactical intentions, flight path and falling point of the bridge, you can use different ways of holding the racket flexibly.

 5. How to hold the bridge: 

5.1. Hold the bridge at the top of the bridge: Use two fingers, index finger and thumb to gently hold the top of the bridge, hold it about 1-2 cm deep, the other fingers are left natural. This way of holding the shuttlecock is often used when athletes perform a backhand serve

5.2. Holding in the middle of the bridge (bridge body): Also with the index finger, the thumb is held on both sides of the bridge body, the remaining fingers are lightly grasped naturally. This way of holding the shuttlecock is often used when athletes perform a forehand serve.

6. Preparatory posture: In badminton competition, athletes must choose a position that can cover the entire area of ​​the court that they manage with an appropriate posture to prepare to make an active and effective hitting movement. most fruitful. Depending on the specific situation, there are different postures and preparation positions. There are two basic preparation positions that athletes most often use, which are the prepared position to receive the service (receiving the shuttle) and the prepared position when the shuttle is in play

.6.1. The position of preparing to receive the service: Because the yard to manage is only in the receiving box, the direction of movement is mainly forward and behind. Therefore, the preparation posture of the receiver is usually standing in front of the back foot. The foot is not on the same side as the racket handle in front, the foot is on the same side with the racket handle.

behind. The focus is on the front foot, the toe is towards the server, the knee joint is bent about 30o - 40o to be able to react immediately when detecting the demand curve and the falling point of the bridge. Body leans forward slightly. The racquet handle is brought forward, the elbow is bent at an angle of about 90 degrees and kept at chest level or maybe higher to be able to quickly perform a shuttlecock action.

6.2. Standard Posture when required during the call:

This management field range can be the entire field (single competition), or one

court section (doubles); demand curve, the drop point is very variable depending on the road

request of the style to be (high, low, low, right before, right after, side of the hand, side

left hand…) should be a standard is must out of the power Flexible, depending on the situation

Specifically. Usually athletes use a standing position with two legs parallel

width is equal to 1-2 shoulders. Depending on the situation, the athlete can stand

left or right foot 1 - 2 feet higher, focus on toes, joints

bend 40o - 50o, handle the racquet in front of the body, maybe slightly tilted

to the backhand, the racket is as high as the chest to be able (high, low, left, right...). With private

This standard is the athlete can quickly navigate to instructions, perform activities

hit the effect at all different instructions one result

7. Move

In badminton as well as in other competitive sports, di

Shifting is an important technique that is always associated with the shuttlecock movement.

If the movement is not reasonable, the athlete will not have a favorable position to perform the movement

hitting the shuttlecock, as well as consuming a lot of energy, affects the hitting efficiency

demand and rapid decline in physical strength.

On the basis of natural steps such as walking, running, jumping, stepping

pedals, stepping steps, splits, etc. have been combined into a combination of moves

Move to move to hitting positions such as: move up the net, move back

to the end of the field, move to the sides or jump high...

Depending on the drop point of the bridge near or far from your prepared position

Athletes can stand in place, or use a single step or a combination of steps to move

Move quickly to position and have a favorable position for hitting the shuttlecock.

7.1 The technique of stepping onto the grid

7.1.1. Move up the right grid:

To move up the net athletes can use the technique of moving by step

run (alternately moving two legs), cross step 3 steps (right foot forward 1

step, then left foot cross step forward behind right foot, then right foot

quick step forward 1 next long step). Or can use

stepping stone to move onto the net (right foot after taking 1 step forward, continue

Follow the left foot quickly step up, follow the right heel, take advantage of the back pedal

of the left foot, the right foot quickly steps forward 1 next long step

follow)

7.1.2. Move Up Grid Left: Method of Move Up Grid Side

The left is basically the same as moving up the grid on the right, only the movement direction is different

skewed to the left.

7.2. Back-step technique: Back-step movement method

The latter is often combined with a swinging position, swinging the racket to hit the shuttlecock.

7.2.1. Moving backwards, hitting the forehand:

When moving, the athlete rotates the body to the right, combining with the right foot backward

one step towards the point where the bridge falls. Depending on the drop point of the bridge near or far from the location

preparations that athletes can use in combination with stepping, cross steps, or with dynamics

Jumping action to move to the shuttlecock position with a favorable posture.

7.2.2. Backward movement, backhand shuttle: Depends on the drop point of the near shuttle

or so far from his prepared position that the athlete can take a step back with his left foot or use

Use a stepping stone to move left and back towards the point where the bridge falls, then rotate

person to the left, and at the same time step the right foot to the left, back).

7.3. Technique of moving to the side:

7.3.1. Move to the right:

To move to the right, if the point of the shuttle falls near the prepared position, the athlete steps

Right foot to the right 1 step to perform a shuttlecock movement. If the bridge is far from the location

To prepare, athletes use stepping or cross steps to move

Move to hit position.

7.3.2. Move to the left:

The method of the left move is basically the same as the back move

left-hand bridge, the only difference is that the direction of movement is to the left side.

7.4. The technique of jumping, jumping, and hitting the shuttlecock

From his prepared position, the athlete can use the jump to jump onto the net, back and to the side to take advantage of the height and shorten the hitting time. Or to perform overhead shuttlecock movements at the end of the court, the athlete moves back to the landing point with a stepping stone or diagonal step, then uses the power of the foot to kick the ground up with 1 foot or 2 feet to hit. demand at the highest possible point