Jump height and isokinetic knee muscular strength of women college volleyball spikers were measured in order to clarify degree of contribution of run and arm swing to jump height, in applying a jump test for isokinetic strength in rehabilitation. We measured jump height of spike jump（SKJ）, jump height without run（counter movement jump 1； CMJ1）, and jump height without run and arm swing（counter movement jump 2； CMJ2）. As a result, SKJ was（mean ± s.d.）49.1 ± 7.5 cm, CMJ1 was 35.6 ± 5.1 cm, and CMJ2 was 29.8 ± 4.0 cm. High correlation was observed between contribution of the run and SKJ. The isokinetic knee torque was reduced with an accompanying increase in angular velocity. The jump heights measured by these three methods were correlated significantly to isokinetic knee torque, especially to the knee extension torque at 180 deg/sec. In addition, the three jump heights and the isokinetic knee torque of higher rank spikers were significantly larger than lower rank spikers.

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"NAGARE" is becoming an indispensable discourse in all sports scene, recently. And, it is an　important factor to decide the winner. Sportscasters often use this word to describe the abstract situation of the game. There are many studies that made the game analysis and research about "NAGARE", but　there are not many studies that attempted to approach a humanities and social science to the identity of "NAGARE" or the structure of "NAGARE". The present study aims to grasp the methodological structure for the intentional creation of "NAGARE". The target is a leader with the perspective of coaching, and yet a person that can be advanced semantic interpretation　of "NAGARE" in the volleyball Game. I was using a semi-structured interview method for Kato Yoichi of the former Japanese national volleyball player. He is currently enrolled as a coach and a player of Tsukuba United SunGAIA. Then, the conversational data was analyzed. To analyze the date the Grounded Theory　Approach was used, Merton’s Self-fulfilling Prophecy was used as a framework of date analysis. Result revealed that the methodological structure for the intentional creation of “NAGARE” consists of three concepts; deal prophecy, strategic prophecy, foreshadowing prophecy. These three concepts are closely related.　The core category that incorporates the three concepts was named ‘Fluctuation of prophecy for the creation of "NAGARE"’. Leaders is the absolute donor for player’s prophecy, players are the performer of prophecy. From the standpoint that the leader’s prophecy and the player’s prophecy will not necessarily match, it must be produced the common volleyball dimension between the players and leaders. Therefore, it is we should　use the cooperative prophecy toward the intentional creation of "NAGARE". So, we should be focused on the relationship between the leader and players to enable mutual understanding of prophecy.

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The purpose of this study was to clarify psychological aptitude. Ninety-four Junior High School tall volleyball players （mean height＝185.1±5.4 cm,48 male and 173.9 ± 4.2 cm, 46 female） were picked up for this study. To measure their psychological aptitude，we used following 3 type of scale TSMI （Taikyo Sport Motivation Inventory），MPI （Maudsley personality Inventory），and SCAT （Sports Competition Anxiety Test）. The date were analyzed SPSS 20.0 for Windows. A criterion level of .05 was used in this study. The results showed that girl players were significantly higher than boy players in 4 sub-scales，Challenge to the Goal（t ＝ 2.61，p ＜ .05），Value of Athletics（t ＝ 2.18，p ＜ .05）， Causal Attribution to the Effort（t ＝ 3.01，p ＜ .05）and Victory Intentionality（t ＝ 2.85，p ＜ .05）.In addition, girl players were significantly higher than boy players in Introversion - Extroversion scale（t ＝ 2.61，p ＜ .05）. Therefore, these results suggested that the girl players on this study are more ambitious and extroverted than boy players. Follow up research should examine on a continuing for clarify psychological aptitude.

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Feedback utilizing video has the potential for wide-range application； from top athletes to physical education classes. However, at present, its application is limited. This paper examines its effectiveness to promote widespread use. A questionnaire survey was conducted on one club team and on one university team. The results indicate that video feedback enables players to analyze their own play objectively as well as enhances the motivation to correct their own play. It was shown that video feedback is an effective tool； however, careful selection of the transmission method（ delayed system or video device） must be made in accordance with the training menu and ／ or the purpose of use.

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This study investigated the differences of visuospatial working memory and spatial cognition between volleyball players and non-ball game players. It also investigated how the right dorsolateral prefrontal cortex（ rDLPFC） work. Visuospatial working memory and spatial cognition were examined by the N-back test（ NBT） and mental rotation test（ MRT）.These tests were carried out to measure a percentage of correct answers and the reaction time. To clarify the relation of right dorsolateral prefrontal cortex（rDLPFC）, each subject was given transcranial direct current stimulation（ tDCS）. As for the percentage of correct answers at MRT and NBT, there was no difference between volleyball players and non-ball using players. However, volleyball players’ reaction time of MRT and NBT are faster than those of non-ball game players. It can be said that there is a possibility of making more use of rDLPFC for volleyball players than other players in spatial cognition and visuospatial working memory, for there is some effect of tDCS in reaction time of NBT and MRT

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In league games, Takeuchi and Fujino reported a method for estimating each team’s strength by the Bradley-Terry（ BT） model from the results of games. The similar manner was also applied to estimate parameters denoting attack and defense capabilities with respect to each volleyball team’s rotations. In the analysis using the BT model, a computer program on the basis of a repetition algorithm was indispensable to estimate parameters. Instead of such the algorithm, Shimazu proposed another simple estimation method called "Shimazu model", which is derived from the ratio of the number of success plays against the number of all attack plays or all defense plays. Afterwards it found that the parameters estimated by the BT model and Shimazu model are not always compatible. This paper examined the difference between the two models. As the results, it is reported that the BT model is a general model which includes Shimazu model. If the rotations constitute a single stream, parameters estimated by both models are same. Further, the estimation of the probability that a team acquires a set is reported by computer simulation with applying parameters obtained by BT model.

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The subject. matches were a total of 27 matches including eight international female volleyball matches and 19 domestic matches during a period from 2011 to 2013. We devised a 2-LS alternative method in which one type of line-up stream is selected from two types of line-up stream to determine the starting line-up. It is the method that players of opponent team who are kept eyes on are determined and our setters don’t make five plays at the front. There were a marked group with whom we play less than five plays and other group with five plays. In addition, a starting line- up which was applied for actual match was made actual group. As for the ranking of starting line-up at each set, the ranking of set acquisition rate was applied and the ranking per set in 27 matches was calculated. As for the ranking per set, the ranking per set in marked group was higher in actual group and winner team of marked group, defeat team, or whole groups and a significant different was found with 0.1% level. From these results, we considered that the starting line-up by 2-LS alternative method is applicable. As for the ranking per set in marked group and other group, no significant difference was found between winner team and whole groups. However, a significant difference was found with defeat team at 5% level. From this finding, we considered that the starting line-up corresponding to the situation that the setter deals with opponent marked players five times should be avoided. In a selected starting line-up, we applied team-plus rate to improve the team power.

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The author researched the method for preparing starting line-up of Japanese team targeting at 14 sets（four matches）in London Olympic 2012. The first block of Japanese team corresponded to opposing team’s marked players five times in front row. Starting line-up was selected by Japanese team method and 2-LS alternative method. With regard to rank for each set, higher rank was obtained by 2-LS alternative method. In Japan vs. Korea match, Japanese No.18, R2 player could avoid continuous loss in 3R phase of reception at front row. That was one of the reasons for victory. At that time, R2, No.10 player and setter marked by Korean team could play in front row and LS-6 not LS-2. It was a cause of success. There is a theory that if team plus rate exceeds 50.0%, the team can win with a probability of about 80.0% or more. There was a tendency supporting the theory. Line-up analysis using by 2-LS alternative method and team plus rate was effective method to win opposing team.

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