BJJ	Brazilian Jiu-Jitsu
RTS	Return to sport
BMI	Body mass index
I-PRRS	Injury-Psychological Readiness to Return to Sport scale
FIJLKAM	Federation of Judo, Wrestling, and Karate Martial Arts
CONI	Italian National Olympic Committee
UIJJ	Italian Jiu Jitsu Union
FIGMMA	Italian Federation of Grappling and Mixed Martial Arts
MMA	Mixed Martial Arts
STROBE	Strengthening the Reporting of Observational Studies in Epidemiology
OSF	Open Science Framework