This study mainly intends to explore amateur baseball umpires whose serious leisure traits shows leisure involvement and has the relationship with leisure satisfaction. Object of study covers all amateur baseball umpires in Taiwan (excluding offshore islands). The study adopted random sampling to conduct questionnaire survey by distributing 320 questionnaires, of which the effective recovery of 292 with effective return ratio 91.25%. This study referred to the relevant literatures with research tool of questionnaire scale, including the contents of basic information, serious leisure traits scale, leisure involvement scale and leisure satisfaction scale. The scale has good internal consistency and stability.
Descriptive statistical analysis, reliability analysis, independent sample t-test, one-way ANOVA, correlation analysis and hierarchical regression analysis were adopted for statistic analysis of returned data. This study concluded that (1) amateur baseball umpires’ serious leisure traits has significant positive influence on leisure involvement; (2) amateur baseball umpires’ serious leisure traits has significant positive influence on leisure satisfaction; (3) amateur baseball umpires’ leisure involvement has significant positive influence on leisure satisfaction; (4) amateur baseball umpires’ leisure involvement has mediating effect between serious leisure traits and leisure satisfaction. Consequently, the study offered a proposal for amateur baseball umpires, the relevant units and future researchers’ reference.