How tall are girls for short track speed skating? Height is an important morphological index of short track speed skaters, and skating can enhance the balance ability of human body. So now many parents will let their children learn. Let's analyze how tall girls are for short track speed skating.
How tall are girls for short track speed skating? 1 short track speed skaters are mostly between men 170- 178cm and women 160- 167cm. Medium height is the main height feature of short track speed skating in the future.
Knowledge points in short track speed skating competition
(1) can only run once, and the second run will be sent out; (2) Seizing the inside is the first chance to win the game; (3) Good cornering skills can prevent latecomers from surpassing themselves; (4) The greater the body inclination when cornering, the smaller the space for the athletes behind the body to surpass; ⑤ It's a good opportunity to overtake when the curve slows down; ⑥ The probability of slipping and falling after slipping is very high; All landowners short track speed skaters must be fully armed to prevent injury; Stay alert at the moment of sprint.
Rules of short track speed skating competition
Short track speed skating originated in Canada and is now divided into men's and women's individual events and team events. Men's and women's individual events are 500m,1000m and1500m. Both men's and women's team events need 4 athletes to relay, and the men's team events have a sliding distance of 5000 meters and 45 laps; The distance of the women's team competition is 3000 meters, 27 laps!
According to the general situation, there are 4-6 athletes in the 500-meter and 1000-meter short-distance races, and the top 2-3 athletes can advance to the next round1; 1 there are 6-8 runners in the long-distance race over 500m, and the top 3-4 runners can advance to the next round1. In the preliminaries, the slide station will be determined by drawing lots, and in the subsequent competitions, the slide station will be determined according to the results of the last round of 1, and those with good results will stand on the inner slide!
There are two kinds of short track speed skating fouls! 1. Starting foul: If an athlete deliberately slows down the preparation speed after the starter calls "prepare", causing other athletes to start foul, the athlete will be sentenced to "delayed warning". Any part of an athlete's skates on or over the starting line will be sentenced to the first foul.
Only 1 first foul is allowed in each group, and any player who commits the second first foul will be sentenced to a foul and need to leave the rink quickly under the guidance of the referee!
Second, the foul behavior in field skating: the short track speed skating slide is short, so many athletes can slide at the same time, so the competition system allows athletes to have physical contact to a certain extent, but it will be considered a foul to hinder or interfere with other athletes' progress by pushing, colliding, leaving the slide, slowing down, kicking, etc. Once an athlete is found to have committed a foul, he will be disqualified.
How tall are girls for short track speed skating? What is the speed of short track speed skating?
Short track speed skating has always been a competition full of accidents. Every athlete can skate on the ice at a speed of 50 kilometers per hour, and the skates are very sharp. If an accident happens, will it hurt people?
ice sports
In order to make the ice and snow sports full of diversity, short track speed skating is naturally an essential project, so the standards in all aspects are extremely strict. Little friends who have skating experience know that wearing skates has little friction on the ice, and novices are prone to fall.
Short track speed skating
But for professional athletes, their requirements for speed are extremely high. In order to reach a reasonable level, athletes' dedicated ice surface has a fixed value in the world. Without specific requirements for ice, scientists began to study how to minimize the friction of athletes on the ice.
Friction during running
They found that the whole ice layer is divided into crystalline ice, ice-water mixture and ice film, and the top layer is the transition layer. The transition layer contains a small amount of "flowing water", not liquid water. Microscopically, water is actually some tiny ice slag and small ice particles, which will become liquid water molecules when rubbed against objects.
ice surface
These water molecules play the role of lubrication, so people will feel unstable when walking on the ice and fall easily. The transition layer generates enough sliding power, and athletes do not need to touch the crystalline ice under the transition layer when sliding. Moreover, in order to improve the skating speed of athletes, the skates on the shoes they wear are also extremely thin, which is also the reason why the skates are damaged during skating.
Fancy skates
Generally, the thickness of ice skates is about1.4 mm. The smaller the stress area, the greater the pressure on the ice surface, and the ice surface will be heated by friction under higher pressure, thus reducing its melting point. Therefore, when the skates touch the ice, the ice will become water. At this time, the friction between them will be minimized, and it will be easier for skates to slide on the ice.
How to ensure the safety of skating "braking"
The speed of short track speed skaters in international competitions can reach 50 kilometers per hour, which has surpassed Bolt, the fastest runner in the world. It is easy for people to stop at the time of impact because of the high speed, so the average runner will not suddenly brake after high-speed movement, and there will be a certain buffer way.
The speed of short track speed skaters is much higher than that of 100 meter sprint, so it is not easy to brake. In order to ensure the safety of brakes, designers have made great efforts on roller skates.
According to the standards of international ice rink competition, the short track speed skating venue is 60 meters long and 30 meters wide. Athletes definitely need to slide around the center of the stadium, and short track speed skating needs more turns, so the specific inner radius is 55.56 meters and the sliding length is 28.85 meters.
How tall are girls for short track speed skating? How to sharpen the knife on 3-speed skates?
First, the blade cutting method of ice skates: mechanical grinding, semi-mechanical grinding and manual grinding.
1, mechanical grinding: it is processed by professionals using a grinder.
2. Semi-mechanical grinding: Grinding the blade with a grinding wheel is only suitable for rough grinding and manual grinding because of the large wear.
3. Hand grinding: low cost and good effect. People who demand high-quality skating are all hand-grinded.
Second, the manual sharpening method.
1, flat grinding (suitable for speed skating and ball knife)
Sharpening method: when sharpening a knife, first fix the skates on the sharpening frame, put on gloves, and carefully check whether the two knives are on the same plane. You can rub it back and forth with a big grinding wheel to see if the wear marks are uniform.
After confirmation, first use a large grinding wheel (30CM in diameter) to push and grind the figure "8" until burrs appear on both sides of the blade, that is, finish the rough grinding. Then, continue to use coarse oilstone to push and grind in the shape of "8" until the grinding marks are particularly fine, and then use fine oilstone to remove the burrs on the knife surface and sides, and a pair of shoes will be polished. Take out the skates and clean the dust and scum on the surface.
2. Slotting (for pattern and ball cutter)
The planing groove is divided into full planing (full knife) and half planing (heel of ball knife). Use the "planing device" and finely grind it with an oilstone (round stick) after molding.
Tools: 1. Grooving knife, find a flat iron with a width of 3CM and a length of 30CM, punch a hole with a diameter of 4.2 in the center, and tap with M5 wire. Both sides of the hole are respectively provided with two grooves of 3CM (ball knife) and 4CM (pattern). Second, turning tool (triangular cutter head, grinding the sharp corner of the cutter head into a rounded corner with a radius of about 2CM, and fixing it in M5 wire with screws so that the rounded corner faces the groove. )
Grooving method: when grooving, clamp the shoes between your legs, and if possible, clamp them with a vise. Hold both ends of the grooving device with both hands, clamp the grooving on the ice skates, and apply force evenly along one direction of the blade body, and scrape slowly. Don't eat the knife too deeply, so as not to gnaw it. Repeat for many times until grooves appear and burrs appear on both sides. And then finely ground with an oilstone. A pair of baked skates can stand on the table without falling off.