When sliding, the upper body leans forward, the legs are deeply bent, and the body is streamlined. Two feet alternately circulate in three stages: one foot supports inertial sliding, one foot supports pushing ice, and two feet supports pushing ice.
Second, the starting technology
There are mainly two kinds: one is the front and front foot ice starting method, and the other is the side starting method. Elite athletes often use 1 method. Its main action is from a static state, using reasonable technology, quickly transformed into a fast sliding technical action. The starting technique is particularly important to improve the performance of short and medium distance events.
The technical point of front foot icing is that the toe of front foot is the fulcrum and the back foot is covered with ice. The distance between the two knives is slightly wider than the shoulder and faces forward. The squat posture is slightly higher than other starting postures, and the center of gravity is between the feet or slightly in front. When starting, lift your thighs high and lean forward. When the skates touch the ice, cut the ice tightly and don't slip in the first few steps.
Third, swing arm action
Mainly used for short-distance skating, it can coordinate and increase the power of pushing ice. Nowadays, more and more people use single-arm swing in long-distance sliding, and the swing arm is less stressed, and the swing direction should be consistent with the sliding direction. No matter whether you use double swing arm or single swing arm in short or medium distance, you should exert your strength, especially pay attention to the speed and strength of side swing and front swing.
Extended data:
China's Han Tianyu won the silver medal in men's1500m short track speed skating in Sochi Winter Olympics in 2 minutes15.055s, which was close to the skating speed limit.
The skating track is a combination of "straight+curve". On the straight, the sliding acceleration increases. Theoretically speaking, the greater the muscle strength of human legs, the smaller the friction produced when the skates are inserted into the ice, and the sliding speed on the straight road can be infinite, which is the limit of human beings.
However, there is a bend in the road. When you meet a corner, you must slow down, because if you drive too fast on the corner, people will slip off the track. So in the corner, the athletes will slow down, and the speed on the corner is restricted by the centripetal force.
Derived from kinematics, centripetal force = athlete's weight × turning speed square × curve radius; Derived from dynamics, centripetal force = friction coefficient between skates and ice × pressure of athletes' weight on skates with legs.
People's network-speed skating
People's Network-How fast can humans skate? 1 sec. 14 people flashed by.