Although volleyball is one of several types of ball games, the essential component in all such games is a com petition leading to a future unknown result. Distinguishing the structure of volleyball based on the objective of competition, the competitive task, and the method selected for such task-solving, this study argues a new theory to utilize volleyball as instructional materials. In all cases including volleyball, the objective of the active competition phase consists of engaging in one of the following enterprises: ball-progressing (or multiple ball progressing in the case of golf or bowling) to an objective point or individual player movement to an objective point. Ball and player progressing is accom plished through offensive or defensive group or individual activity. Considering these elements, volleyball can be classified into “breakthrough games”. Furthermore, based on the layered structure of defensive interface and the selected method of ball- progressing corresponding to that structure, breakthrough games including volleyball were further divided into sub categories. Those findings illustrate a model for PE teachers attempting to provide instructional materials of volleyball.

View full abstract

The purpose of this study was to clarify the psychological aptitude of the volleyball players in terms of ath letic motivation by using meta-analysis with compared to another sport players. 51 papers were found from search for published scientific reports that used TSMI (Taikyo Sport Motivation Inventory), a testing measure to evaluate an athletic motivation. 28 of those papers contained data needed for meta-analysis (elite non-volley ball player's mean scores, standard deviations and number of subjects) on which we conducted the analysis. 1,377 elite volleyball player's data were also used for paralleling with elite non-volleyball players. Meta-analysis of all subjects revealed that the effect sizes for 6 of TSMI sub-scales(TS6:Tension Anxiety, TS11: Fighting Spirit. TS13:Looseness, TS15:Value Of Athletics, TS:16:Planning. TS:17:Attribution To Effort ) were in the range between.20 and.49 and those for the remaining 11 sub-scales were between.00 and.19. As a result, it was sug. gested that although the difference was slight between volleyball players and non-volleyball players in terms of athletic motivation, the items we got some differences were important factors of psychological aptitude for the elite volleyball players.

View full abstract

This study was designed to prepare the scouting program by use of the cinematography, and to analyze the skill of serve reception during the volleyball games. The cinematographic image taken by the video camera during the game was reflected on the screen of notebook computer. After digitizing the middle point of player's feet, the position of serve receiving formation and the location passed actually were calculated by Two dimensional Direct Linear Transformation Method. The performance of serve reception was evaluated into three grades, where a pass that can be set into combination play was +1. a pass that can be set to either end spiker was 0, an ace or pass that can't play attacking was -1. The analyzed data was expressed graphically on the screen so that the coach could supplement important strategy in brief time-out period. The scouting pro gram has been tested and validated as video tape recorded the match was played back.

View full abstract

We have developed “TOUCH VOLLEY”. It is a tactical support system for volleyball by using two laptop personal computers connected by wireless LAN. Each computer can implement by using a touch sensor func tion on display. The developed system is consisted of three functions: Data input, Tactical support and Data analysis. In this paper we describe Data input function. The input item on Data input function is as follows; “Service and Receive against the service” and “Spiking and Digging”. The user can input the game data on a trajectory of service and spiking by touching the display directly. The way of fundamental input procedure is as follows ; (1) Input the number of players who served and received by touching a player button on display. (2) Input the position where the player spiked or served by touching court position of directly. (3) Input received position. (4) Input receiver. The user can use this system easily during the game because of the only four steps. Moreover, the user can choose next 4 items as the need arises: “Evaluation of Service and Receive”, “Kinds of Attacking”, “Evaluation of Blocking” and “Evaluation of Digging”. The user can get accustomed to input operation of this system easily and exactly. It is needed only 1 match for the user to get familiarized with inputting game data.

View full abstract

We have developed “TOUCH VOLLEY”. It is a tactical support system for volleyball by using two laptop personal computers connected by wireless LAN. Each computer can implement by using a touch sensor function on display. The developed system is consisted of 3 functions: Data input, Tactical support and Data analysis. In the Data input function, the user can input a trajectory of ball as game data by touching display directly. In this paper, we describe Tactical support function and Data analysis function. The Tactical support func tion is run during the game. This function receives a game data from connected Data input computer by wireless LAN. The team coach can see the direction chart on spike (or service) trajectory of each player immediately. Therefore, the player can get advice about their weak point or rival team. After the game, the user can analyze the game data in detail by using Data Analysis function. The Data analysis function shows us each player's skill with using tables and diagram of spike (or service) trajectory. The members can research on their team and rival team. By using proposed system, the team coach can advise immediately during the game. After the game, the head coach can plan the training menu by using analyzed data.

View full abstract

The researcher investigated the profile of volleyball coaches of junior high school. The research aims to clarify the actual condition about the coaches profile. The questionnaire was distributed to the coaches of junior high school teams who are registered with the Chiba Volleyball Association in 2003. The responses are summarized as follows: (1) 76% of the sample comprises males. 22% of the sample comprises females. 2% did not identify their sex. (2) 48% of the coaches are 40 to 49 years old. While 13% are 20 to 29 years old. (3) 99% of the respondents are teachers. Out of the 92% are teachers. And 55% are home-room teachers. (4) 23% said that they had less than five years of volleyball coaching career. (5) The coaches who have had experienced playing volleyball amounts to 50%. While those who did not have experience totals 46%. No answer was 4%. (6) Those who played volleyball at university is approximately 12%. (7) Those who teach volleyball but are reluctant to do so comprise 41%. (8) 48% say that they do not have enough capability to coach volleyball. While 52% are confident about their ability. (9) Those who acquired a coach license only amounts to 1%.

View full abstract