Attack performance in volleyball wasn't evaluated only with the result of the end situation of attacking, but this research aimed at grasping the attack performance of the team including the ability of attack construction conditions until it reached there objectively. The samples were 28 games, 206 sets for women of kansai inter-collegiate volleyball league in 1999. The following knowledge could get as results. 1) There was a difference in appearance frequency of four-attack situation in the volleyball game. And the importance of attacking from the serve reception and attacking from attack reception was admitted to be in the usual report. 2) Correlation wasn't recognized between the attack efficiency and the final order of the league. As for the attack efficiency, it became clear that the attack performance of the team wasn't shown precisely. Moreover, correlation is recognized between miss attacking rate and the final order of the league, and it is necessary to add an attack mistake to the object of the evaluation. 3) When attack performance in volleyball was evaluated, it was recognized that we should calculate attack efficiency with the one by the attack situation , the attack construction type separately. 4) As for the applicable group of this research, the validity of the way that an attack construction type evaluates an attack performance separately was admitted, and the characteristics of the attack performance of the team could be grasped in detail.

View full abstract

NK Junior College Volleyball Team had three setters on starting line-up for the games in 1993 Spring and Fall Kyushu League of Intercollegiate Women's Volleyball, and West Japan Division of Intercollegiate Women's Volleyball Tournament. The purpose of this study was to extract the requirements for being successful setter by comparing the performance of three setters and investigating to find in what situation the differences in setting abilities and setting tactics become clear. Main finding were as follows: 1) It was clarified that one of requirements for being successful setter was to be able to jump-set at the place away from the normal setting position. 2) It was clarified that the difference of the ability of setting tactics would not be clear in the attacking phase from the serve-receive that the setter can make setting plan before hand. But would be clear in the attacking on transition, where the setter was required to keep up with changing situations. 3) It was clarified that the difference in setting abilities became evident when the setter ran the combination attack or did a third-tempo set from the place away from the normal setting position. 4) It was clarified that the difference of the result of setting would not be clear in the attacking phase from the servereceive, but would be clear in the attacking on transition.

View full abstract

The authors attempted to extrapolate the best and worst lines-up for the Japan women's volleyball team in the '00 Olympic Final Qualification games with China. They used the maximum likelihood method and Bradley-Terry Model to retrospectively investigate the nine games between Japan, Cuba, Russia, Brazil, and China in the '99 World Cup Women's Volleyball Games held in Japan (from November 2 to 16, 66 games in total). Line-up4 was obtained by the best and Line-up6 was the worst. The starting line-up of the Japan team in Line-up4 was R5 with and without the serve. In Line-up6, the starting line-up was R3 with and without the serve, respectively. Line-up6 was the line-up that the Japan team should have avoided. To enhance the team's perfomance, it was necessary to improve the rotation phase with a low offense index and defense index. High defense index was necessary to maintain. Specifically, R4,R5 and R6(low offense index), R1 and R2(low defense index), R3, R5 and R6(high defense index) were applicable to rotation phases for the Japan team in Line-up4. R6(18.5%) and R2(－13) were obtained the most low offense perfomance by point rate and Net Score each method.

View full abstract

In this research, we have tested how effective our specially designed Assisting device can be in coaching, making a comparison between skilled players and beginners. From the resuits, we can conclude that the device which we have designed is effective in underhand pass coaching in terms of the following respects: (1) By using the assisting device, beginners can receive the ball with a motion similar to that of skilled players in terms of the following respects: ①The arm angle before the ball be received can be extended. ②The arm angle and the bending forward angle when the ball be received can be extended. ③The 'swinging motion of the arms', which is defined in terms of the arm angle and the tilt angle, can be reduced. (2) By using the assisting device, while female players can perform the foward motion more easily. (3) By using the assisting device, beginners can receive the ball more successfully. (4) Skilld players can gain the good image of the receiving motion during the practice. (5) Although beginners, equipped with the device, may have some difficulty moving around, it is not so heavy as to cause too much discomfort. They find it easier to receive the ball immediately after the device is removed, which shows that its effectiveness can be clearly perceived. Some points that need to be taken into consideration have become clearer as we have continued our experiment and coaching. With regard to the arm angle in particular, when receiving a serve, it should be set at approximately 75 degrees for men, and 65 degrees for women.

View full abstract