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You start with a swim board, and when you prepare for the exercise, put your legs together and lie down. Practice whip-like leg beating. You can fight and cooperate later.
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Don't be nervous, don't lift your head, and inhale by the rotation of your body. Otherwise, the buoyancy is not enough, and the leg is wasted too much energy.
You can use a minimum number of leg strokes, two strokes, and two leg strokes.
The head can be rotated at a higher angle to prolong the inhalation time.
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Just don't be nervous.
Your hands are desperately trying to float on the water, causing the back half of your body to sink down.
Also, the whole person is nervous and not completely relaxed.
When the teacher made you float, did you just float and hit your legs successfully, and then you sank immediately.
Hey, what do you say?
It's just that your legs are too hard.
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You can do leg exercises while holding the patoon with both hands in the water.
When practicing, don't bend your legs, hit water up and down, keep your hands straight, don't sink your feet, keep them parallel to the water, and the amplitude doesn't have to be very large, when you feel that you can swim forward without a lot of effort, your movements are basically the same, and then you can let go of the float with both hands.
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Straight legs stretch the foot surface, at the beginning of the exercise, you must insist on the leg not bending, the foot surface is slightly involuted, the ankle should be relaxed, and you should feel the pressure of the foot facing the water with your heart when playing water; Draw water lightly and quickly, keep the top and bottom of both feet at 20-30 cm, and stick to the correct posture practice.
For breathing problems, follow the log principle, roll the body back and forth, start inhaling when the hand is raised, end the inhalation when the hand is inserted into the water, and immediately return to the head-down position. Remember never to lift your head and inhale, you can turn it at a larger angle at the beginning of the exercise to facilitate inhalation, and exhale fully underwater.
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The reasons why the freestyle kick can't hit and the correction method are as follows:
Swimming is a whole-body exercise, and the movement of any part of the body is inseparable from the coordination and cooperation of the whole body. On the surface, freestyle relies on strokes and kicks to generate propulsion. When the freestyle swimming, the legs will sink down, the legs will not be able to hit, and the stroke will not be in place.
Reasons why the legs can't fight:
1. It's not right to hit the legs, just kick the calves, the effect of hitting the water is not good, and there are too few leg exercises.
2. The ventilation is not right, the freestyle is to turn the head for ventilation rather than to look up and turn the head, the eyes look at the pool for ventilation, the head is part in the water, part is on the water surface, the ventilation is in an instant, the eyes should look at the bottom of the pool.
Correction method: First, you should practice playing your legs first, and you should pay attention to the following points when you start to hit your head and raise your head to beat your legs
1. Leg beating: It is the thigh that drives the calf, not just bending the calf, "whipping the leg".
2. Straight toes: The feet should be like dancing ballet, but the ankles are relaxed, and the toes are buckled.
3. Relax: Hit the legs slowly, feel whether the ankles are moving up and down, don't hit the legs very violently, this is meaningless, it will only consume physical strength and lose confidence.
Second, the third step of leg ventilation, leg stroke with one arm and ventilation, while hitting the leg while breathing, grab the float with one hand, put one hand next to your thigh, turn your head to breathe.
3. Clamp the thigh and float both arms to stroke and breathe, and change the air for the first 2 strokes.
Fourth, the whole coordination of legs, paddling, ventilation and freestyle practice is best practiced by yourself with the help of auxiliary tools, floats, back drifting, and fins.
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In freestyle, leg tapping is a very important technical movement that can help swimmers better propel their bodies forward and reduce energy consumption. In the process of beating the legs, the reason for not moving in place is that the main Li Shanshi must have the following points:
1.Improves balance: When playing in place, you can better exercise the balance of your legs, allowing swimmers to stand more steadily in the water and prepare for subsequent swimming moves.
2.Strengthen leg strength: Through the practice of hitting legs on the spot, you can strengthen the strength of your leg muscles, improve the explosiveness and endurance of the leg collapse, and provide stronger motivation for subsequent swimming movements.
3.Improve your technical level: In the process of hitting your legs on the spot, you can better master the technical movements and rhythm of your legs, such as how to properly close your legs, push your legs, stretch your legs, etc., so as to improve your freestyle skills.
In short, in the training of freestyle leg beating, which limb does not move in place is a very important basic action, which can help swimmers better master leg technique and improve the effect and speed of swimming.
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Freestyle leg sinking correction method: make the head slightly lower than the horizontal plane, and then use the strength of the waist and the strength of the legs to make the lower body slightly higher than the plane, which can effectively prevent the legs from sinking.
Reasons and methods of sinking:
1. Due to a large number of cavities in the chest and abdomen, the density of the human body is not uniform, simply put, the center of mass is slightly lower than the geometric center, that is, the lower half of the human body is heavier than the upper half, so when floating horizontally, the lower limbs will slowly sink. In order to improve this state, you need to arch your back, raise your legs, and then gently hit your legs, and you're basically OK.
Remember the state of the core at this time, and keep it. It is important that the reverse bow not only improves the level of the body, but also stabilizes the lower back and abdomen.
2. When you paddle your hand to breathe, your leg may fall down again. This is usually due to the fact that the head is raised out of the water during ventilation and the head is not in the correct position. Remember that the head can only rotate on the axis of the spine, not blindly.
It may not be possible to solve this problem in one step, but it doesn't matter, take your time, after all, you are a beginner.
Hit the legs, hold the triangle board, keep your head above the water surface at all times (do not bury yourself in the water), and make a splash with your feet. You will have to arch your back in this movement, and it won't take you a few days to get used to this posture, which is practiced by professional teams in this way, the purpose of which is to strengthen the strength of the core.
History of Freestyle Development:
At the beginning of the 19th century, Australian R. Cavill won by alternating his legs to hit water, replacing the shear-and-pinch technique. In 1922, the American Wesmollo improved the use of alternating strokes with two arms and six alternating strokes with both legs to form a modern crawling mode.
In 1896, the first Olympic Games freestyle was listed as an official competition event, freestyle is not limited by any posture, the speed of crawling is the fastest, so it is the posture of freestyle, this posture has a reasonable structure, low resistance, uniform speed, and is the most labor-saving swimming posture.
Freestyle is practical and plays a very important role in Olympic swimming competitions. There are 7 men's 50m, 100m, 200m, 400m, 1500m, 4 100m relay and 4 200m relay in the Olympic freestyle events. There are six events for women: 50m, 100m, 200m, 400m, 800m and 4,100m relays.
Freestyle accounts for 13 of the 31 swimming events and is often seen as a measure of a country's swimming level, as it also includes freestyle in the medley and medley relays.
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When the Olympians swim 1500, their legs don't hit much because they already have a sense of water, have the right way to swim, and can use the waist and abdomen to tighten and the hips to lift, so they are lazy and don't fight. Hitting the leg is also to control the balance, and if you don't hit, it will definitely sink.
That's because you have air in your lungs, and the solution is not to have too much air in your lungs.
Requirements for freestyle kick exercises:
1.In freestyle, the angle between the thigh and the calf should not be less than 135°.
2.In freestyle, when hitting the leg downward, the leg should be complete, and the angle between the thigh and the calf should be 1180°.
3.The instep should be straight (this is a motivation for the instep to hit the water backwards). The foot plate should be buckled inward, in the shape of an "eight" (this is the power of the side paddle water. That is, the power of the "oar" shape). These two motivations should not be wasted.
4.The amplitude of the two feet is between 30 and 45 cm on the toes; The distance between the toes of the two feet is controlled between 5 cm.
5.The body should be straightened; Hands stretched out with arms tucked behind ears; Straighten your feet together.
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You don't need to improve your strength, you just need to use your thighs to drive your calves. I know a disabled person who doesn't have calves in his legs, but his legs work well because he relies on his thighs to exert force. When our legs are sound, as long as we experience that the thighs drive the calves first, and experience more exercises, we will definitely succeed.
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Pay attention to the position of your head, lower your head slightly, and look downward.
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Strengthen the waist and abdomen, pay attention to the waist.
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No, it's best to keep your legs just below the surface of the water when you are on the top swing. That's a little less resistance.
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1. The leg beating is not proficient, and the water beating strength is not enough, which is not enough to support the weight of the legs. Beginners just need to remember: knees straight, ankles straight, thigh quadriceps muscles, thighs drive calves, the swing between the legs should not be too large, between 30 and 45 degrees, do whip water, the action is powerful and elastic.
2. The ventilation is not right, and the head is lifted during the ventilation process, causing the legs to sink. Remember the two words "bite the shoulder" when ventilating. Moreover, the head has been kept low and flat, and the head cannot be swayed from side to side due to ventilation, and deviates from the central axis, so it must always rotate left and right along the central axis.
Fit: There are four types of 1:2:
6.That is, one air exchange, two strokes of the arm. 6 leg beats, this is the basic skill of beginners, beginners swim like this, is the fastest, but also the most exhaust (that is, the most wasteful) competition:
It is used for short distances, starts, after turning around and kicking the wall, and when sprinting.
The following three are used for long distances and save physical strength.
1:2: Irregular leg hits.
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Pump water upwards.
When the swimmer leg is drawn upward, the thigh drives the calf upward, and the leg is in a straight position. When the entire leg moves to the surface of the water and with a horizontal plane.
When the thighs are basically parallel, the thighs stop moving up and turn down to hit the water, but the calves and feet still continue to move up due to the action of inertia, so that the knees are closed.
The knots are bent. The angle of knee flexion is generally 130-160 degrees.
When the calves and feet have also finished hitting the water upwards, the thighs have already entered the downward beating process. The calf should not be above the water, and the soles of the feet should be close to the water.
or slightly above the water. The feet should not be too high above the water surface, otherwise it is easy to lose part of the buoyancy, so that the body has a tendency to sink; The second is in the direction.
At the beginning of the water, the feet can only hit the air, and the reaction force of the water cannot be obtained, and a large number of bubbles will be stirred up, increasing the resistance.
Draw water down. After the calf and foot are finished, the thighs are driven by the thighs and start to hit the water downward. Due to the flexion of the knee joint, the calves and feet are watered.
The direction is back down. When the thighs are down to the lowest and start to hit the water upwards, the calves and feet are still not finished hitting down until the knees are closed.
The joints are fully straightened, and the calves and feet follow the thighs to turn upwards and start the next cycle.
Crawling and swimming should be done with bent legs downwards and straight legs lifted up, with a range of about 30-40 cm. The ankle should be plantar flexed when hitting the water downward.
Instead of dorsiflexion, force the instep towards the back and downwards so that the reaction force obtained by the foot has a forward and upward component. If the foot dorsiflexion hits the water, not only.
Instead of pushing the body forward, it gives the body a backward reaction force that causes the body to go backwards.
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Common mistakes and correction methods for freestyle leg beating!
This is easier to solve, it's not just a matter of habit, you can swim by the pool by yourself, or you can use it to lie on the float, so it's okay to practice, but swimming still needs to be taught by high-level people, and the effect is really different.
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