I also congratulate all the sporting heroes of our country on becoming the office bearers of the prestigious IOA! A nation is proud of them!" tweeted Rijiju.
Earlier, Usha said she would file a nomination for the post.
"With the warm support of my fellow athletes and National Federations, I am humbled and honored to accept and file for the nomination of the president of IOA!"
PT Usha tweeted on Saturday. Sports Authority of India (SAI) also retweeted Rijiju's tweet.
Usha took home the gold in the women's 400-400-meterdles at the 2004 Asian games.
She also has four gold medals from other events from 1988, 1992, 1996, and 1998 Olympic Games.
Usha finished fourth in the women's 400m hurdles at the 1984 Olympics and was 1/100th of a second away from a medal.