What are the rules of javelin competition?

The rules of javelin competition are as follows:

When throwing javelin, you should hold the handle and throw it from the shoulder of the throwing arm or above the upper arm. You are not allowed to throw or throw in an unconventional position.

Before javelin throwing, the body must not completely turn to the throwing direction.

After the athlete enters the throwing circle and starts throwing, no part of his body may touch the ground outside the circle.

After the throwing action is completed, you must come out from behind the extension line of the throwing circle semicircle.

The time limit for each trial run is 1 min; The tip of the javelin must touch the ground to be effective.

Javelin, as a track and field event, originated from early hunting tools of human beings. It sharpens both ends of bamboo or wood, which can be thrown directly or stabbed. With the gradual evolution of civilization, javelin has gradually changed from hunting tools to war weapons, such as pike and spear. On the battlefield, long guns are often combined with weapons such as shields to make up for the shortcomings of soldiers' lack of defense.

Due to the rapid development of javelin throwing technology, the men's world record reached 96.72 meters in the 1980s. Although the history of women's javelin is not long, its performance has also improved rapidly, from the first world record of 43.68 meters to 69.32 meters. Due to the continuous improvement of javelin performance, it has threatened the athletes of other events in the same field. Therefore, in 1987, the IAAF adjusted (moved forward) the center of gravity of javelin and made strict restrictions, which greatly shortened the throwing distance of javelin. At present, the records of men and women are 98.48 meters and 80 meters respectively. ?

China doesn't have much advantage in javelin throw. In July 1 1, 2065438, China athlete Lu Hui broke her own national record and Asian record in the women's javelin competition of the national track and field championship. On August 6th, 20021,at the Tokyo Olympic Games, Liu Shiying won the Olympic gold medal with 66.34 meters. This is also the first time that China won the gold medal in the Olympic javelin event.