1963 is when Gymnasticsat the Games of the XXXI Olympiad was established  . It was held in 29 July – 11 August 1984 . The official site of Gymnasticsat the Games of the XXXI Olympiad is chicagomarathon.com . 6 events were there in Gymnasticsat the Games of the XXXI Olympiad . 136 from 29 nations competed in Gymnasticsat the Games of the XXXI Olympiad . The venue for Gymnasticsat the Games of the XXXI Olympiad was USTA Billie Jean King National Tennis Center,Arena Olímpica do Rio,Galatsi Olympic Hall (rhythmic)
More than 39 nations participated in the event