sentences:  He began performing in adult competitions in the light heavyweight division (82.5 kg) after 2003.Martirosyan competed at the 2004 Summer Olympics in Athens and came in seventh place with a total of 367.5 kg.Martirosyan won a bronze medal at the 2006 World Weightlifting Championships in Santo Domingo, finishing behind Andrei Rybakou and Aslambek Ediev.