本研究以參加2002年世界排球錦標賽男子組決賽的四個隊伍為研究的對象，分析自由球員與非自由球員在接發球與防守的排球技術表現，總計分析四場、十七局的比賽，總球數為974球。研究結果發現自由球員的接發球成績較非自由球員為佳；進攻是球隊獲勝的主要關鍵之一，而接發球的好壞將影響到進攻戰略的進行，因此自由球員應該更積極主動的去把握接發球的機會，以利進攻戰略的運行。由本研究中發現自由球員的防守表現較非自由球員為佳；因此教練可以運用隊形，讓自由球員有更多防守的機會，以製造更高的得分契機。

The purpose of this study was to investigate the differences in receive and defense characteristics of the libero players and the non-libero players. Four matches yielding fourteen sample games from the Men's Volleyball World Championship 2002 were recorded. Results showed that the receive and defense performance of the libero players is better than the non­libero players. The methodology used in this study and the results provide valuable aids for the coach in the evaluation of team performance.