Swim turn technology graphic introduction

Because of the different characteristics and rules of each stroke, there are many ways to turn around. According to the action image, it can be divided into two types: flat-type turning and front-rolling turning.

One, flat turn

Including backstroke, crawl, and breast stroke. This kind of turning movement is relatively simple and easy to learn, but it is slow to turn around.

Second, roll forward

Including crawling, backstroke rollover for backstroke, half roll for backstroke, and rollover for various postures. This kind of turning does not touch the pool wall, so it is the fastest to turn around, but the movements are more complex and difficult to learn.

According to the swimming method, it can be divided into butterfly stroke, backstroke, breaststroke, and crawl.

One, breaststroke turned

The rules of the competition stipulate that when the breaststroke is turned, both hands should touch the wall at the same time on the water, water or underwater. The two shoulders before touching the wall should be parallel to the water surface. At the same time, the athlete is restricted from performing a snorkelling action similar to that of a butterfly swimmer's long stroke arm and a breaststroke leg in the water after turning. Due to the stringent requirements of the rules, the stroke of the breaststroke is slightly slower than other swimming styles. The method of turning usually uses only head-up inhalation and turning.

Breaststroke turning movement technique (taking a left turn as an example)

The athlete who touched the wall in the last leg kicked and did not decelerate to swim near the wall of the pool. Both arms extended forward and touched the wall in front of the center of gravity (as shown below).

After turning to touch the wall, the palm of the hand presses against the wall of the pool, bending along with the elbow of inertia, bending his knees, while the body rotates to the left along the longitudinal axis, and lifts his head to inhale. The left hand leaves the pool wall and turns with the body to the left in the water. Gradually stretch to the left. When the body is turned to the side of the pool wall, the head flings in the direction of advance, and bow into the water, push the right arm away from the pool wall, swing the arm from the air, while lifting the hip to make the two legs touch arm, both hands through the armpit reach, legs Prepare to bend the wall (as shown below).

Two feet of the palm wall are stuck about 40 centimeters below the surface of the water. The arms are stretched forward. The head is clamped between the arms, and then it is forced away from the pool wall (as shown below).

After gliding and a snorkeling action, the body is gliding in a streamlined manner. When the speed slows down to the normal swimming speed, both hands start to draw long arms to the sides of the thighs. When the gliding speed is slower, the legs and hands are close to the abdomen. Chest and armpit reach forward, when both arms straighten the collet, kick and slide, and when the arms start the second stroke, the head reveals the water.

Second, butterfly swimming turned

The method of turning the butterfly stroke is roughly the same as the technique of breaststroke turning, except that the legs can be used to perform one or more splashes of water under the water, but the distance cannot exceed 15 meters. When the two arms are under water for the first time, they must move the arm from the water for the second time to swim and swim.

Three, crawling and turning

The swimming rules stipulate that any part of the body may touch the pool wall when the freestyle is turned. At present, there are two types of swings and rollovers.

Swinging Turn This speed is not as fast as roll forward, but it is easy to learn, effortless and can guarantee the breathing rhythm. It is often used by beginners and athletes with low level of training.

Take the wall near the pool wall with a right hand as an example. With the last stroke of the left arm, the right arm extends forward, and the palm touches the wall above the body's center of gravity (see below).

Turning around with the inertia of swimming, the right arm bends elbow, the body turns to the left, and bends forward to close the leg, so that the head and shoulders out of the water, the two legs close to the pool wall. Then the right arm pushes the pool wall, swings the head and swings the arm in the direction of rotation, and the two legs continue to approach the pool wall, forming a couple. Rotate your left arm to raise water from below to help your body sink into the water quickly. The right arm swings back into the water from the air, the two feet are against the pool wall, and the body is in the side wall posture (pictured).

After the wall was turned, his arms were straight and his head was clamped between his arms and his feet were forced out (see below).

After gliding and starting to swim, the body became streamlined and turned into prone position during the gliding (as shown in the figure below). When the speed was felt to be declining, it began to kick and then the water was raised to the surface.

Rolling forward This is the fastest technique to turn around in swimming.

When swimming near the pool wall near the end of the pool 1.5-2 meters away from the pool wall (depending on the speed of the game and the height of the body may be), with a powerful final stroke, ready for turning (as shown below ).

Turn and use the speed achieved by the arm stroke. With both arms resting on the side of the body, lower the head, press the shoulders, and pull the legs down. The palm turns downwards. With the head continuing downwards, both hands dial the water down and lift the hips. The abdomen is bent and pith, because the head and back are no longer forward resistance, but the body center of gravity higher than the head and shoulders does not receive this resistance, so that the lower body and legs continue to move forward, forming a couple, the body forward roll, when the hips go over At the time of the department, the left hand dials the water in the direction of the head to rotate the body around the vertical axis (as shown in the figure). At the same time, the leg bends and knees accelerates and flips, so that the two feet are thrown toward the pool wall and the body is in a lateral position and completes the turn. During the roll-over procedure, micro-exhalation should be maintained to avoid nasal cavitation.

After the wall was turned, the body immediately squatted in the lateral position. When the wall is stretched, both arms reach forward and the longitudinal axis of the body rotates toward the prone position (see below).

After gliding and starting to swim away from the pool wall, the body maintains a streamlined posture and gliders forward, and continues to turn into a prone position. When the feeling of speed declines, he immediately kicks his legs and draws water, and he swims up to the surface of the water (see below).

Fourth, backstroke turned

Backstroke Backstroke There are many techniques for turning backstroke, which are generally divided into flat, half-rolled, roll-backed, and roll-forward roll-over techniques. More commonly used is the flat turn technology (amateur) and rollover technology (professional).

Flat Turn Back The simplest and most basic technique for turning backstroke is to turn the technology around the front and rear axles. The flat turning technology head can be out of the water or out of the water. The following example uses the right-handed touch wall as an example.

The swim near the pool wall and the touch wall maintain the speed to swim near the pool wall, and use the marker rope to adjust the distance and movement. After finishing the last stroke of the left arm, the right arm swings to the left front of the head while the head and shoulders are biased to the left. The right hand touches the wall about 20 cm deep in front of the left shoulder (pictured).

1. Turn the right hand to touch the wall and follow the elbow of inertia. The legs are still doing the action of kicking the water. Because of the change of the direction of advancement, the force that rotates around the body's fore and aft axis causes the body to turn on the surface of the water. At this time, one should bend the body to shorten the turning radius and reduce the resistance (see Figure 2). At the same time, the right hand does the action of pushing right away from the pool wall in the rotation to strengthen the head and shoulders to rotate to the left (see Figure 3). The left arm moves forward from the horizontal position by the axial position on the side of the body and is pulled forward with the right arm (pictured).

After the wall has completed its turn, the legs are bent, and the two feet are about 25-35 centimeters away from the surface of the pool. The upper body is straight and it is in a powerful wall posture for the swim-in direction. At the same time, it performs powerful wall motions ( Figure).

After gliding and starting to swim into the wall, the body slid forward. When the gliding speed is reduced to near the swim speed, begin to play against the butterfly leg or kick back leg, but the distance must not exceed fifteen meters, you must do arm strokes and raise the body to the surface to swim.

2. The forward-rolling body of front roll-over body-backstroke and forward-roll body technique of crawling is basically the same. It is just before the wall of the pool and the sign of backstroke has passed. The body of the body is turned around with the power of the last arm-shift. Shaft rollover turns into prone position, and the last swiping motion after the last stroke is performed. When doing the roll-back of the backstroke, be sure to pay attention: once the body changes from lying supine to lying down, the legs can no longer perform the action of the water, and the body should turn away from the pool in the supine posture.