A revision was done in the frequency recently of the rule of the volleyball and there were ones such as the introduction of the rally point system and the introduction of the libero player which the aspect of the game has changed to roughly, and so on, in the revision in the past. 　Therefore, an influence over the game by the rule was studied to the degree of the rule revision and was made use of for the guide. 　In 2008, a rule revision about the use sphere was done. 　It boils and it doesn't become clear therefore in the present place about what influence this revision had on the game of the volleyball. 　We think that to boil, to be stuck, to investigate what influence it has on the game and to clarify are urgent business. 　Therefore, the this research is comparison between the new ball and the old ball use game, using official data about the technology statistics of the game（ the old ball use game） before 2008 about the test match and the game（ the new ball use game） since then in 2008. 　Then, it went to clarify about the influence which change the official ball gives the serve and the reception by doing and reviewing comparison with the victory or defeat, comparison as the man and woman. 　It got the following conclusion from the result of this research. 1）　 That the new ball had an influence on the serve and the reception became clear and it was the one to lower the success of the reception, doing a serve in the thing boiling to be more offensive. 2）　 The influence which changed to the new ball was more remarkable at the woman than at the man. 3）　To clarify about the technology system and the tactic to have adjusted to the new ball was left as the problem in the future.

View full abstract

The purpose of this study was to determine the time structure of the block in volleyball. We divided the time required to block movement (block time) into 4 phases; 1) from stimulus to reaction, 2) lateral movement time, 3) grounding time, and 4) jump time. The time required to each phases was measured by using multi PAS system Ⅱ . Eleven collegiate male volleyball players participated in the measurements. The block time against right, center and left attacks were 1.839 ± 0.128, 1.023 ± 0.169, 1.851 ± 0.114s, respectively. The lateral movement time against right and left attacks occupied 52.9 and 54.3% of the block time The reaction time against center attacks were 75.8% of the block time. A significant negative correlation were found between height and the block time against right, center and left attacks. These results indicate that movement speed to right or left is important in blocking against right and left attacks. Against center attacks, the reaction time is one of the most important factors in block movement.

View full abstract

The purpose of this study was to investigate the time required to the block movement in 3-choice reaction task (3-CRT) and simple reaction task (SRT). The time required to the block movement was divided into 4 phases; reaction time, lateral movement time, grounding time, jump time. The time required to the block movement against right, center and left attack in SRT was shorter than that in 3-CRT (p＜0.05). The jump time against center attack in SRT was also shorter than that in 3-CRT (p＜0.05). The lateral movement time against right attack in SRT was shorter than that in 3-CRT (p＜0.01). No significant correlation was found between height and any phase of the block movement. These results indicate that the decrease of the number of probable choices shorten the duration of block movement in volleyball.

View full abstract

　The purpose of this study was to demonstrate technique top leveled setter players had, by using two dimensional DLT method with a picture of FIVB Volleyball World Championship 2006 to normalize standardize and average the way RG(a setter player in Brazil) set a ball. In the picture, RG made combinations even if receivers return the ball on the attack line. Focusing on the form of him with four-hitter attack, he started to step with his right foot, attached left foot while stepping, turned straight in jumping, and set a ball with jumping. Then, he moved his arms compactly. When jumping, he put his hands above his head, and set a ball with his hip joint straighten. Then, he kept his balance in jumping, jumped just above with his trunk and feet straighten vertically. Then he touched a ball on a plumb line of his navel. Examination of his set form with four-hitter attack by a standard deviation showed that he constantly set a ball with almost the same way. Added to this, examination of accurateness and stability by checking the point where he set a ball at, the width of the set is 0.92m(left) and 1.03m(right). We may say that he set a ball with thinking of slot 5 or slot C.

View full abstract

The purpose of this study is to examine the state anxiety among Japanese university volleyball players based on coaches’ evaluation. The subjects were 54 male players of 4 teams（ The average age was 20.5 years: SD=1.09） who participated in the Japanese Kanto district university men’s volleyball league games of year 2010. They were asked to respond to a Japanese version of the State-Trait Anxiety Inventory（ STAI）, which was measured at 4time periods（ The day before a game, The day of the game, Just before the game, Just after the game） for each of a total of 40 game（s each team played 10 games）. We collected one head coach and one assistant coach from each of the 4 teams（ A total of 8 coaches）. They judged whether players performed well or not. Then, each player was placed into one of the following 2 groups; Well-performing group（ WPG） and Non well-performing group（NPG） based on the above-mentioned criteria. The results were as follows: 1） The group of players who performed well in games collected by coaches scored lower than the more badly-performing group in the score of state anxiety. 2） The score between the group of players who performed well and the more badly-performing group showed significant difference on just after the game. These findings indicated that there was a difference in the character of state anxiety of between WPG and NPG based on coaches’ evaluation.

View full abstract

We often hear the word "NAGARE" from many volleyball players. Similarly, sports casters often use this word to describe the abstract situation of the game. However, nobody can actually capture "NAGARE" as a visual phenomenon. The present study aims to analyze the structure of "NAGARE" by classifying what players say when they find or feel "NAGARE" in the game. First, words related to "NAGARE" are extracted. Then, the　conversational　data was analyzed. To analyze the data the Grounded Theory Approach was used, Merton’s Self-fulfilling Prophecy was used as a framework of data analysis. Result revealed that “NAGARE” in volleyball game consists of four concepts; invisible vicious circle, invisible virtuous circle, force of referee, and delay of time. These four concepts are closely related. The core category that incorporates the four concepts was named ‘Subjective fluctuation around the court’. To understand the structure of “NAGARE”, definition of situation is an important element. Whether players can grasp the situation properly will affect the game. It is not easy for players to change the way of defining the situation because definition of situation based on individual player’s experience is ‘preconception’, so to speak. The preconception is difficult to overcome and should be broken down, or changed into a positive　way by the director or coach. The findings of the study have a close relationship with the characteristics of volleyball as a sport. Therefore further research for investigating culture and problems related to volleyball is needed.

View full abstract