Psychological Effects of Rapid Weight Loss in Brazilian Jiu-jitsu Athletes

Abstract Rapid Weight Loss (RWL) is a technique used by athletes in combat sports to obtain competitive advantages and it is defined by a 3-5% average reduction of body mass in a short period. This investigation aimed to verify the existence of any differences between Brazilian Jiu Jitsu athletes who can or cannot perform RWL, and if it influences psychological parameters. Participants were 17 male athletes with an average of 25 years. The STAI Inventory, Beck Depression Inventory, Stroop Colors and Words Tests and GO/NO-GO were used in 3 sessions (baseline and RWL sessions). There were differences only between groups in the inhibitory control [p=0.014]. It is concluded that weight loss does not alter athletes' psychological parameters; although inhibitory control has an impact on strategy.