A (full) contact sport or collision sport is a sport which inclues significant physical contact between the athletes involved. Examples of contacts sports are: Rugby league, Rugby Union, American football, Ice Hockey, Australian Rules Football, Lacrosse and Amateur wrestling. Full-contact martial arts include e.g. boxing, MMA, puroresu, Muay Thai, judo, and full-contact styles of karate. Also, kick-boxing in the early seventies in the USA was born which introduced a controlled version of full contact to martial arts. Examples of non-contact sports are: Table Tennis and Badminton.