16 (from 6 confederations) were the number of teams who competed in Gymnasticsat the Games of the XXIII Olympiad . 136 from 25 nations competed in Gymnasticsat the Games of the XXIII Olympiad . Hockey rink or arena, and is sometimes played on a frozen lake or pond for recreation were the venues of Gymnasticsat the Games of the XXIII Olympiad . 5 September 1971 is when Gymnasticsat the Games of the XXIII Olympiad was established  . The sport has the official site chicagomarathon.com . The no. of events in sport was 8 . It was held in 12 August
Less than 9 nations participated in the event