유도지도자의 자율성지지와 선수의 그릿 및 경기수행능력의 관계 = Relationships among Judo Coaches’ Autonomy Support, Athletes’ Grit and Athletic performance

다국어 초록 (Multilingual Abstract)

The purpose of this study was to investigate the relationships among judo coaches’ autonomy support, athletes’ grit, and athletic performance. The sample consisted of 256 judo athletes ranging from middle school students to members of professional teams, all registered with the Korea Sports Association as of 2025. Participants were selected using a convenience sampling method. Data were analyzed using SPSS 22 and AMOS 22, through frequency analysis, confirmatory factor analysis, reliability analysis, correlation analysis, and structural equation modeling. The results revealed the following: First, judo coaches’ autonomy support had a positive effect on the athletes’ perseverance of effort, but a negative effect on consistency of interest—two subcomponents of grit. Second, autonomy support by judo coaches positively influenced athletes’ athletic performance. Third, among the subcomponents of grit, only perseverance of effort had a significant positive effect on athletic performance. These findings highlight the critical role of coaches’ autonomy-supportive behavior in enhancing both psychological traits and performance outcomes in judo athletes.