Omar first represented her country at the 1998 IPC Powerlifting World Championships, held in Dubai. She entered one of the lowest weight categories, the 44 kg, winning the gold medal. Following this success she was selected to compete at the 2000 Summer Paralympics in Sydney, Australia. At the Sydney Games she competed in the 44 kg weight class taking the gold medal with a lift of 109 kg, beating Lucy Ogechukwu Ejike of Nigeria. Four years later at the Athens Games, Omar moved up to the 56 kg class. She outclassed the field with a lift of 127.5 kg.