| 英文摘要 |
This study was to determine the efficacy of the serve retrieving and defense of the female libero player in high school volleyball competition. Differences among those libero players of each team were compared by percentage. The study subjects were four libero players from four different teams in 2003 high school volleyball competition. Analysis was performed by direct observation and tape recording. After analysis and discussion, conclusions are: 1. Substitution of ChungShan high school libero players was three persons while the rest teams were fixed to 2 persons. 2. Each teams consisted of three persons in receiving serve ball except ChungShan was four. The defense position of libero players is either areas 5 or 6, except area 1. 3. The success rate of retrieving serve ball of libero players was considered better in Chinese foreigners. 4. SanShin high school libero players achieved the best performance in receiving serve ball and moving to the point of contact. 5. Based on the variety of serve balls, Chinese foreigners performed better while ChungShan high school players were outstanding in moving to the point of contact in retrieving jump serve ball. In receiving overhand serve ball, ShinMin school libero players had a high success rate while Chinese foreigners and SanShin school players were better in moving to point of contact. 6. In defense, SanShin libero players performed better in retrieving spikes; ChungShan high school players were outstanding in attack block; ShinMin high school players were good in receiving feint attack; ChungShan and ShinMin players achieved good performance in retrieving rebound balls. All the libero players of four teams got the 100% success rate in receiving chance balls. |