In weightlifting, the division of kilograms is based on the weight of the players, and has nothing to do with the weight of the barbell lifted. In other words, in order to ensure the fairness of the competition, the contestants should be divided into the same level according to their weight.

Men in this Tokyo Olympic Games are divided into seven classes: 6 1 kg, 67 kg, 73 kg, 8 1 kg, 96 kg, 109 kg and above.

Women are also divided into seven categories: 49 kg, 55 kg, 59 kg, 64 kg, 76 kg, 87 kg and above.

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The earliest weightlifting events used barbells with iron balls at both ends, and the weight could not be adjusted. 19 10, Nuremberg Kaspar Borg changed the metal ball into a detachable metal piece, which is a milestone in the development history of weightlifting events and has been used ever since.

In the first Olympic Games, there was no heavyweight in weightlifting, only one-handed and two-handed clean and jerk. It was not until the seventh Olympic Games that the heavyweights were divided into three categories: snatch, clean and jerk and recommendation.

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1924 was changed to five events: one-handed snatch, clean and jerk, two-handed push and snatch. 1928 Cancel the one-handed lift and keep the three events of two-handed push, snatch and clean and jerk.