Introduction: to avoid rapid body mass fluctuations and the associated effects on health and performance, some combat sports federations have made changes to regulations. Objective: the objective of this study was to analyze the impact of the Rapid Weight Gain on sporting success in elite Olympic wrestling athletes under the new weigh-in procedure. Methods: the body mass of 75 athletes was recorded during the Pan-American Olympic wrestling Championship (Lima, 2018), corresponding to 29% of the total universe of competitors (n
