He set a new Olympic record by lifting 168kg in jerk, three times as heavy as his body-weight, against the expectation of experts, along with the lift of 125kg in snatch and 293kg in total.

At that time, media of different countries widely reported about his victory, saying that he struck the world with wonder in weightlifting.

Om retained the world championship in 2013, 2014, 2015, 2018 and 2019 and grabbed gold medals at such many international games as the Asian Weightlifting Championship in 2013, the 2013 Asian Cup and Interclub Junior and Senior Weightlifting Championship, 17th and 18th Asian Games and the 29th Summer Universiad.

He established new world records in weightlifting jerk and total of several games and bagged a silver medal in the 31st Olympic Games.

He was awarded the title of DPRK Labor Hero in 2012, the title of People's Athlete in 2013 and Kim Jong Il Prize in 2014.