“Muaythai is an organization with 135 national federations, nearly 60 are recognized by their national Olympic Committees and nearly 400,000 registered athletes,” said IOC Sports Director Kit McConnell following the decision of the IOC Executive Board.
“The international cheer union (ICU) has over 100 national federations and nearly 4.5 million registered athletes,” McConnell added.
“It is a sport with growing popularity, a strong youth focus in schools and universities and we noted that.”

http://www.reuters.com/art…/us-olympics-sports-idUSKBN13V2G2