著者

釜崎 太

出版者

Japan Society of Physical Education, Health and Sport Sciences

雑誌

体育学研究 (ISSN:04846710)

巻号頁・発行日

vol.55, no.2, pp.481-498, 2010

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This study focuses on the early theory of play in the school (<i>"Schulspiele"-Theorie</i>) of Konrad Koch, who advocated his "play movement" (<i>Spielbewegung</i>) at the Martino-Katharineum gymnasium in Braunschweig at the end of the 19^th century.<br> According to Koch's <i>"Schulspiele"-Theorie</i>, sports education shows isolated pupils how to conform to norms on their own initiative, i.e. following rules and norms as a requirement in sports, and also improves self-discipline. However, at least at the inception of the thesis of play in the school (<i>"Schulspiele"-Thesis</i>) written in 1878, the school was placed as an associate between "home and family" and "nation", where not only "lessons" were required, but inside the free gymnastic group (<i>freie Turnerschaft</i>) a community was to be built on the basis of an independent connection between teachers and students, as well as amongst the students themselves. The ideal form for this formatted collective was not further defined by Koch, who did not intend to have this collective focusing on "nation", but rather aimed to build this on the basis of a civil collective. Although at this time Turnern idolized anti-foreign nationalism, Koch admired the significance of the English style of sports education. One can say that the <i>"Schulspiele"-Theorie</i> based on a civil collective had aims that were quite different from gymnastics in school (<i>Schulturnen</i>) that valued nationalism.<br> Nevertheless, by the turn of the century, Koch had also published an extremely militaristic thesis. At this time, the collective building based on play in the school (<i>Schulspiele</i>) was to be described as something that was clearly dependent on the "nation". Future issues will focus on how and in which way Koch's <i>"Schulspiele"-Theorie</i> subsequently found its way into forms of authority in modern nations.<br>

著者

釜崎 太

出版者

一般社団法人 日本体育学会

雑誌

体育学研究 (ISSN:04846710)

巻号頁・発行日

vol.55, no.2, pp.481-498, 2010

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This study focuses on the early theory of play in the school (<i>&ldquo;Schulspiele&rdquo;-Theorie</i>) of Konrad Koch, who advocated his &ldquo;play movement&rdquo; (<i>Spielbewegung</i>) at the Martino-Katharineum gymnasium in Braunschweig at the end of the 19^th century.<br> According to Koch's <i>&ldquo;Schulspiele&rdquo;-Theorie</i>, sports education shows isolated pupils how to conform to norms on their own initiative, i.e. following rules and norms as a requirement in sports, and also improves self-discipline. However, at least at the inception of the thesis of play in the school (<i>&ldquo;Schulspiele&rdquo;-Thesis</i>) written in 1878, the school was placed as an associate between &ldquo;home and family&rdquo; and &ldquo;nation&rdquo;, where not only &ldquo;lessons&rdquo; were required, but inside the free gymnastic group (<i>freie Turnerschaft</i>) a community was to be built on the basis of an independent connection between teachers and students, as well as amongst the students themselves. The ideal form for this formatted collective was not further defined by Koch, who did not intend to have this collective focusing on &ldquo;nation&rdquo;, but rather aimed to build this on the basis of a civil collective. Although at this time Turnern idolized anti-foreign nationalism, Koch admired the significance of the English style of sports education. One can say that the <i>&ldquo;Schulspiele&rdquo;-Theorie</i> based on a civil collective had aims that were quite different from gymnastics in school (<i>Schulturnen</i>) that valued nationalism.<br> Nevertheless, by the turn of the century, Koch had also published an extremely militaristic thesis. At this time, the collective building based on play in the school (<i>Schulspiele</i>) was to be described as something that was clearly dependent on the &ldquo;nation&rdquo;. Future issues will focus on how and in which way Koch's <i>&ldquo;Schulspiele&rdquo;-Theorie</i> subsequently found its way into forms of authority in modern nations.<br>

著者

阿江 数通 小池 関也 川村 卓

出版者

一般社団法人 日本体育学会

雑誌

体育学研究 (ISSN:04846710)

巻号頁・発行日

vol.59, no.2, pp.431-452, 2014 (Released:2014-12-20)

参考文献数

43

被引用文献数

2 3

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The purpose of this study was to clarify the kinetic features of the upper limbs at different hitting-point heights (high, middle, and low) during baseball tee-batting. Twenty-three collegiate male baseball players (age: 19.8±1.3 yr, height: 1.74±0.04 m, weight: 74.1±6.2 kg, athletic career: 12.0±2.1 yr) participated. Three-dimensional coordinate data were captured using a VICON-MX system (12-camera, 250 Hz), and kinetic data for each hand were collected using an instrumented bat equipped with 28 strain gauges (1000 Hz). Three tee-batting heights were set for each subject based on the upper and lower limits of the strike zone according to the rules of baseball. Kinetic variables for the upper limbs, such as joint torque, joint torque power, and mechanical work, were calculated. The period of forward swing motion was divided into down-swing and level-swing phases. The results are summarized as follows: 1) The extension torque and positive torque power at each individual shoulder joint were significantly greater at the low hitting-point height than at other heights. 2) The positive torque power for extension torque at each individual elbow joint in the last half of the down-swing phase was significantly greater at the low hitting-point height than at other heights. 3) Negative power for adduction/abduction torque at each individual shoulder joint in the level-swing phase was observed at the low hitting-point height. 4) The mechanical work done by joint torque about the flexion/extension and adduction/abduction axes at the shoulder, the flexion/extension axis at the elbow, and the palmar/dorsal flexion and radial/ulnar flexion axes at the wrist showed large and positive values, and differed significantly among hitting-point heights. These results indicate that 1) the flexion/extension torque at each individual shoulder joint contributes greatly to adjustment of the translational movement of the bat in the vertical direction during the down-swing phase, 2) the adduction/abduction torque at each individual shoulder joint exerts a larger proportion of the longitudinal force of the bat to withstand centrifugal force at a low hitting-point height than at other heights in the level swing phase, and 3) consequently, it tends to be more difficult to adjust the bat to the hitting-point at a low height in comparison with other heights.

著者

堀内 元 豊嶋 陵司 鈴木 雄貴 桜井 伸二

出版者

一般社団法人 日本体育・スポーツ・健康学会

雑誌

体育学研究 (ISSN:04846710)

巻号頁・発行日

vol.64, no.2, pp.841-854, 2019-12-16 (Released:2019-12-20)

参考文献数

24

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The purpose of this study was to clarify the kinematics of the jump floater serve in volleyball to provide basic data for research. The jump floater serve motions of 9 female volleyball players (body height: 174.4±6.2 cm, body weight: 67.7±6.1 kg, age: 23.6±4.6 yr, career: 14.4±5.1 yr) were recorded using a motion capture system with 10 cameras (500 Hz). The three-dimensional coordinates of retro-reflective markers on the volleyball were also collected using a motion capture system. The primary variables examined were the hand velocity of the swing arm at impact, the velocity and angular velocity of the volleyball after impact, the joint angles of the swing arm and torso, and the segment angle of the lower torso during the jump floater serve. The main results were as follows. 1. The speed of the volleyball was about 14 m/s, and the spin of the volleyball was about 1 rps. 2. No significant correlation was found between the number of volleyball rotations around each axis and the impact parameters of the swing hand. 3. The maximal right rotation angle of the torso joint in the jump floater serve was smaller than that of the spike motion. 4. The abduction angle of the shoulder joint at ball impact in the jump floater serve was similar to that of a spike motion. 5. From the end of take back to the middle of the serve motion, the standard deviation in the abduction angle of the shoulder joint was notably large. 6. The maximal external rotation of the shoulder joint was smaller in comparison with a baseball pitch or a tennis serve. 7. The extension angle of the elbow joint at impact was smaller in comparison with the volleyball spike motion.

著者

〓橋 英恵

出版者

一般社団法人 日本体育・スポーツ・健康学会

雑誌

体育学研究 (ISSN:04846710)

巻号頁・発行日

vol.51, no.3, pp.315-324, 2006 (Released:2008-01-25)

参考文献数

27

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This paper examines (1) the profile of Dr. Kenzo Futaki, (2) why he advocated the abdominal breathing method, and the purpose and effects of the method, (3) how the Futaki breathing method is performed, and (4) how it compares with the Okada method. The Futaki breathing method involves abdominal breathing, and was originally advocated because anyone could use it. Futaki clearly indicated that his method was not original, but was inspired by, and borrowed from, Atsutane Hirata's method. Hirata's method is a return to an Eastern style of breathing technique, as compared to the practices of the time, which were largely Western-inspired training methods, i.e. with little emphasis on breathing at all. Futaki was a boy of frail constitution until he tried Hirata's method when he was 16-17 years old. He attributed his newfound health to this method. Later he became a doctor, and researched the method further. He found medical/scientific support for the Hirata method. The Futaki method, abdominal breathing, differs significantly from the Okada method, known as reverse breathing or chest-type breathing.

著者

田端 真弓 山田 理恵

出版者

一般社団法人 日本体育・スポーツ・健康学会

雑誌

体育学研究 (ISSN:04846710)

巻号頁・発行日

pp.1104250184, (Released:2011-05-02)

参考文献数

51

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The purpose of this study is to clarify the transformation that occurred in a school (ryuha) of swordsmanship in the domain of Ohmura, Nagasaki, at the end of the Tokugawa period in Japan, focusing particularly on the invitation extended to Saito Kannosuke, one of the leading instructors in the Shinto Munen-ryu (school of swordsmanship), in 1854. This paper was based mainly based on two historical materials: Shugyo-chu Shohan Houmei-roku (1849) and Kuyo Jitsuroku (1849-1855). Ohmura Sumihiro, the 12th domanial lord, and Egashira Kandayu, his chief retainer, were tacitly interested in the utility of swordsmanship in Ohmura, and actively proposed the transformation of a school of swordsmanship. In 1854, they invited Kannosuke to act as the swordsmanship instructor. Kannosuke was the third son of Saito Yakuro, a famous instructor of the Shinto Munen-ryu, who had established and managed the Rempeikan, a swordsmanship school (dojo) in Edo. Saito Yakuro's eldest son, Shintaro, had embarked on a journey throughout the domains of Japan in order to train and practice against other warriors there. These training and practice were known as kaikoku-shugyo. Shugyo-chu Shohan Houmei-roku indicates that Shintaro visited many feudal domains, including Ohmura. Ohmura Sumihiro and Egashira Kandayu then became interested in the technique of the Shinto Munen-ryu, which was taught at the Rempeikan, because they considered it to be useful for actual fighting. Afterwards, they succeeded in inviting Kannosuke in 1854, and he became the instructor employed by the domain of Ohmura. His duty was to promote the training of the Shinto Munen-ryu with warriors in Ohmura. In 1855, the Itto-ryu and Shinkage-ryu instructors of swordsmanship were dismissed and forced to stop their teaching. According to Kuyo Jitsuroku, this transformation from the Itto-ryu and the Shinkage-ryu to the Shinto Munen-ryu occurred over a period of six years (from 1849 to 1855). It was brought about to achieve the political ambitions of Ohmura Sumihiro and Egashira Kandayu.

著者

池田 達昭 勝亦 陽一 鈴木 康弘

出版者

一般社団法人 日本体育・スポーツ・健康学会

雑誌

体育学研究 (ISSN:04846710)

巻号頁・発行日

vol.67, pp.303-317, 2022 (Released:2022-05-12)

参考文献数

53

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The purpose of this study was to compare the age at which elite athletes started competition, and the age range for advanced athletic activities. The study included 914 athletes and candidate athletes (451 men aged 15-51 years and 463 women aged 14-55 years) who participated in the 2014 Incheon Asian Games. In addition, the study investigated the ages of 1,971 athletes and candidate athletes (992 men, 979 women) at previous Olympic Games (Athens 2004, Beijing 2008, London 2012, Rio 2016). The main results of the study were as follows. 1) There were significant differences among sports event categories in the age at which both male and female athletes started competition: scoring events (boys 6.8 ± 3.0 years, girls 7.3 ± 2.4 years), racket events (boys 7.2 ± 2.1 years, girls 6.4 ± 1.9 years), fighting events (boys 9.2 ± 4.9 years, girls 9.0 ± 4.0 years), ball games (boys 9.2 ± 4.9 years, girls 10.2 ± 4.1 years), record events (boys 12.3 ± 5.2 years, girls 13.5 ± 6.9 years), target events (boys 12.6 ± 6.4 years, girls 14.5 ± 7.7 years) and water events (boys 13.4 ± 3.9 years, girls 12.1 ± 3.9 years) (P <0.05). 2) There were significant differences among competition events in the period from the start of competition until participation in international competition and reaching a winning level in national competition: record events (6.7 ± 5.0 years) vs. ball games (9.6 ± 4.4 years) and scoring events (9.9 ± 4.2 years) for girls, target events (4.9 ± 2.2 years) and record events (6.7 ± 4.6 years old) showed lower values than scoring events (7.5 ± 3.9 years), fighting events (7.7 ± 4.1 years), racket events (8.2 ± 3.5 years) and ball games (8.7 ± 4.0 years) (P <0.05). 3) For both men and women, there were significant differences between competition systems in the age of participation in the Olympics: water events 28.4 ± 4.6 years, target events 30.3 ± 7.1 years and scoring events 31.1 ± 11.6 years for girls, scoring events 20.7 ± 3.3 years, racket events 23.6 ± 4.4 years, record events 24.2 ± 4.5 years. Compared with age, ball games 25.4 ± 4.4 years, fighting events 25.8 ± 3.6 years, water events 26.5 ± 4.8 years and target events 28.1 ± 6.3 years (P <0.05). The findings suggested that the age at which athletes started competition, the period from the start of competition until reaching top level, and the timing of participation in the Olympic Games may be affected by differences in competition type and gender.

著者

蔭山 雅洋 岩本 峰明 杉山 敬 水谷 未来 金久 博昭 前田 明

出版者

一般社団法人 日本体育・スポーツ・健康学会

雑誌

体育学研究 (ISSN:04846710)

巻号頁・発行日

pp.13014, (Released:2014-04-04)

参考文献数

31

被引用文献数

6 3

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The present study measured isometric muscular strength and mean power elicited by trunk twisting and trunk rotation during pitching in 28 university baseball pitchers aged 18-22 years. Based on the correlations among these measurements, the purpose of the study was to clarify 1) the influence of ball velocity on isometric muscular strength, trunk power output during the stretch-shortening cycle (SSC) and trunk rotation during pitching and 2) the influence of augmentation which is an index of SSC elicited by trunk rotation on trunk rotation during pitching. We also determined mean power and augmentation during concentric (CT) and SSC rebound (RT) throws of medicine balls weighing 5 kg while twisting the trunk. Augmentation while throwing the medicine ball was positively correlated with ball velocity (r=0.619, p<0.01), and augmentation of the medicine ball was positively correlated with torso rotation velocity at 18-27% and at 46-75% (r=0.398-0.542, p<0.05), and trunk twist velocity at 60-66% (r=0.378-0.395, p<0.05) of the second phase (from stride foot contact to instant release of the ball) during the pitching motion. In addition, pitched ball velocity was positively correlated with the velocities of pelvic rotation at 37-78% (r=0.378-0.488, p<0.05), torso rotation at 46-87% (r=0.391-0.711, p<0.05) and trunk twist at 63-83% (r=0.375-0.499, p<0.05) during the second phase of the pitching motion. These results indicate that pitchers with a larger ball velocity can use SSC movement generated by twisting the trunk, which effectively increases trunk rotation from the first half to middle of the second phase, and they can also increase trunk rotation during the second phase.

著者

三上 純

出版者

一般社団法人 日本体育・スポーツ・健康学会

雑誌

体育学研究 (ISSN:04846710)

巻号頁・発行日

vol.67, pp.255-271, 2022 (Released:2022-05-03)

参考文献数

65

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The purpose of this study was to identify issues related to the treatment of sex/gender in studies on the effectiveness of athletic club activities, conducted by comparing individuals belonging and not belonging to athletic clubs, through a critical review of gender and sexuality perspective. The materials for this review, “studies on the effectiveness of athletic club activities”, were collected according to Imashuku et al. (2019). The present study was conducted with reference to previous work that had pointed out existing problems related to gender perspective. In addition, to clarify the perspective of this study, transition of the gender concept was summarized, along with a discussion of sexual diversity. The gender of the respondents in 149 articles was collected. Among them, 12 articles did not report the gender of the respondents (8.1%), 12 articles reported all-female samples (8.1%), 25 articles reported all-male samples (16.8%), 91 articles reported both female and male samples (61.1%), and 9 articles included “neither,” “blank,” or “no-answer” in addition to female and male samples in the analyses (6.0%). An asymmetric nature between the all-male samples and all-female samples was evident. Articles with all female samples stated the reasons for setting the participants, unlike those with all male participants. In articles that included both female and male participants in the analysis, it became clear that there were problems with analytical methods that ignored gender differences or assumed sex differences. In addition, there were problems with interpretation that left gender differences unaddressed or considered them in terms of sex-related traits. The present study also reviewed how sexual diversity can be masked due to research design, exclusion of “no-answer,” and non-consideration of minorities. Finally, using one article as the object to be considered, a concrete example of the significance of introducing a gender perspective was included. Through this review, it is argued that there is a need to re-examine “studies on the effectiveness of athletic club activities” from a gender perspective, and also for social construction of gender and sexual diversity in research design, analysis and discussion.

著者

大峰 光博

出版者

一般社団法人 日本体育学会

雑誌

体育学研究 (ISSN:04846710)

巻号頁・発行日

pp.15109, (Released:2016-09-29)

参考文献数

28

被引用文献数

1

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The purpose of this study was to analyze problems related to the mechanism whereby students can accept corporal punishment during extracurricular sports activities with reference to the books Escape from Freedom and Man for Himself that were central to Erich Fromm's authority theory. Specifically, the author focused on the concepts of “authoritarian character,” “authoritarian ethics,” and “authoritarian conscience.” Fromm pointed out that anxiety prompted Germany's citizens to give up their freedom in order to obey authoritarian powers such as Hitler and the Nazis.  Students taking part in extracurricular sports activities were considered from the viewpoint of Fromm's authority theory. It was revealed that students comply with a leader's authority in order to relieve anxiety, and have positive thoughts about corporal punishment. Furthermore, it was found that such acceptance of corporal punishment succeeded in eliminating conspicuous suffering, but not in removing any underlying conflicts.  Fromm pointed that fear of anxiety was relieved by spontaneous activity. To achieve spontaneous activity by students, it was suggested that some form of measure that does not create the type of partnership that occurred between Germany's citizens and Hitler would be desirable for any relationship between the leader of extracurricular sports activities and the students.

著者

中村 敏雄 前川 峯雄 丹下 保夫 関 春南 早川 武彦

出版者

一般社団法人 日本体育・スポーツ・健康学会

雑誌

体育学研究 (ISSN:04846710)

巻号頁・発行日

vol.11, no.5, pp.17, 1967-07-05 (Released:2016-12-31)

著者

中本 浩揮 森 司朗

出版者

一般社団法人 日本体育・スポーツ・健康学会

雑誌

体育学研究 (ISSN:04846710)

巻号頁・発行日

vol.53, no.1, pp.39-50, 2008 (Released:2008-03-04)

参考文献数

35

被引用文献数

1 1

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The purpose of this study was to investigate the relationship between baseball expertise and movement correction efficiency in a coincidence timing task that included unexpected changes in target velocity. In particular, we focused on the rate of movement timing correction that is applied to counter unexpected change in the velocity of a moving target under given time constraints. The participants comprised baseball experts (n=11) and novices (n=11). The task was to manually press a button coinciding with the arrival of a moving target, running on a straight trackway. The target moved from one end of the trackway at a constant velocity, and its velocity was increased or decreased in some trials when it reached the other end of the track with a moving target velocity change (TAVC) from 100 to 300ms. The differences in the rate of movement timing correction between the two groups were more evident when the velocity decreased than when it increased. The rate of movement timing correction for the experts was significantly higher than that for the novices under the 100ms and 300ms TAVC conditions. These results indicate that baseball experts can correct movement timing more efficiently than novices when velocity decreases ; this suggests that efficient movement timing correction in response to an unexpected velocity change is one of the characteristics of baseball expertise.

著者

中澤 篤史

出版者

一般社団法人 日本体育・スポーツ・健康学会

雑誌

体育学研究 (ISSN:04846710)

巻号頁・発行日

pp.20128, (Released:2021-06-04)

著者

川戸 湧也 長谷川 悦示 木内 敦詞 梶田 和宏 中川 昭

出版者

一般社団法人 日本体育・スポーツ・健康学会

雑誌

体育学研究 (ISSN:04846710)

巻号頁・発行日

vol.65, pp.775-792, 2020 (Released:2020-11-18)

参考文献数

37

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The purpose of this study was to design and implement judo courses of physical education (PE) in higher education (HE) based on the ADDIE model and to validate the students’ outcomes and issues. The ADDIE model is part of the Instruction Design (ID) theory of educational technology. The subjects were 162 first-year undergraduate students (91 males: 71 females) attending judo courses in a designated sports university, and the lecturer who was responsible for instruction. Courses were implemented corresponding to each of the ‘analysis’, ‘design’, ‘development’, ‘implementation’ and ‘evaluation’ phases of the ADDIE model. In the analysis phase it was confirmed that the role of the course was to provide a PE teacher’s license. Therefore, the content was designed in accordance with the course of study for junior high and high schools. Considering the lesson time (a total of 50 minutes) in junior high and high schools, the time allocation for one lesson in the course was developed with an introductory 10-minute lesson followed by a 40-minute lesson each in the first and the second half. A learning notebook (learning portfolio) was also created in order to ensure the achievement of cognitive and emotional goals, and students were asked to describe their learning during each lesson. Course implementation was by the lecturer, based on systematic observational analysis of the teaching-learning process and self-reflection. Course evaluation was conducted based on the results of the systematic observational analysis, the distribution of student grades, and self-evaluation by students. Analysis of the teaching-learning process showed that the motor learning duration was sufficiently secured while the management duration was kept low. However, visualization of the teaching-learning process revealed that the initial planned time allocation was not realized. Through these results, the importance of a systematic observational analysis can also be recognized in the PEHE. The verification of the grades distribution and the students’ self-evaluation showed that the courses had the expected outcomes as a subject related to teacher’s qualification license. Furthermore, application of the ADDIE model in this judo course highlighted some critical issues, such as increasing students’ opportunities to teach each other, adjusting the learning environment through control of temperature and hydration, and creating special teaching materials for low-skilled students. Thus, in order to guarantee and improve the quality of PEHE, the authors propose an effective approach for course design and implementation that utilizes the ADDIE model.

著者

小田 伸午 森谷 敏夫 田口 貞善 松本 珠希 見正 冨美子

出版者

一般社団法人 日本体育学会

雑誌

体育学研究 (ISSN:04846710)

巻号頁・発行日

vol.36, no.3, pp.255-262, 1991-12-01 (Released:2017-09-27)

被引用文献数

5 2

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The purpose of this study was to investigate tee-batting skills in relation to ground reaction forces. Eithteen batters tried seven swings on the force platform recording three-dimensional kinetic data. A video camera (60 fps) was used to measure ball velocity and swing velocity. The following results were obtnined. 1) A statistically significant correlation was observed between the swing velocity and the swing time. 2 Statistically significant correlations were observed between the swing velocity and the anteroposterior forces during backward swing phase, the mean power calculated from the anteroposterior force during forward swing phase. 3) Statistically significant correlations were obtained betwben the swing velocity, the ball velocity and the mediolateral distance of the CG of the body from the starting position during backward swing phase. 4) The swing velocity and the ball velocity significantly correlated with the mediolateral distance of the CG of the body between the starting phase and the impact phase. 5) Coefficient of variations (cv) of the vertical forces during backward swing phase and the mean power calculated from the vertical force significantly correlated with cv of the swing velocity. CV of the vertical power of the CG of the body significantly correlated with cv of the ball velocity. These findings suggest that the batter should move the body toward the opposite side of the ball and the anterior direction just before the starting phase of the forward swing to obtain the high swing velocity. The result also suggests that the batter should control the vertical movement during backward and forward swing to obtain the high reproducibility of batting.

著者

石河 利寛

出版者

一般社団法人 日本体育・スポーツ・健康学会

雑誌

体育学研究 (ISSN:04846710)

巻号頁・発行日

vol.18, no.1, pp.1-8, 1973-08-25 (Released:2017-09-27)

被引用文献数

2 2

著者

川村 卓 小池 関也 阿江 数通

出版者

一般社団法人 日本体育・スポーツ・健康学会

雑誌

体育学研究 (ISSN:04846710)

巻号頁・発行日

pp.17038, (Released:2019-02-05)

参考文献数

22

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This study examined the flow of energy in the right and left upper limbs of skilled baseball batters during the forward swing motion at different bat head speeds to obtain basic insights that would be useful for batting coaching. The subjects were 23 college baseball outfielders in university teams. The subjects were instructed to hit a ball toward the pitcher from a tee set at a mid-height position. Measurements were taken using 47 points on each subject’s body and 6 points on the bat for a total of 53 points, onto which reflective markers were attached. The 3D coordinates of each marker were measured using a 3D optical motion capture device (Vicon Motion Systems’ VICONMX, 12 cameras, 250 Hz). The variables in the kinetics of each hand were measured using a force detection sensor bat (1000 Hz). The subjects were separated into a faster group of 36.8±0.8 m/s and a slower group of 34.7±1.1 m/s for analysis. In terms of energy transmission, the data revealed that the faster group, in addition to showing additional torque on the knob side shoulder joints, were able to transmit more mechanical energy from the knob side shoulder joints to the end of the upper limbs than the slower group, and that this might be related to an efficient bat head speed. In addition, the faster group showed an increased positive torque power, and transmitted greater mechanical energy to the bat from the hand region. In other words, to prevent mechanical energy from being absorbed while adjusting the bat trajectory near the time of impact, skilled bat control involving movement of the hand joints appeared to determine the bat head speed.

著者

末木 新

出版者

一般社団法人 日本体育・スポーツ・健康学会

雑誌

体育学研究 (ISSN:04846710)

巻号頁・発行日

vol.63, no.2, pp.595-604, 2018-12-10 (Released:2018-12-20)

参考文献数

19

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In high school baseball games, choosing when to bat influences the likelihood of winning, teams batting second having a significantly higher winning percentage. Three hypotheses can be considered for explaining this trend: the weaker school chooses to bat first (Hypothesis 1), an additional strategy change can favor the team that bats second (Hypothesis 2), and a tied score in a later innings favors the team that bats second (Hypothesis 3). However, to our knowledge, no study has directly tested these hypotheses. Therefore, we analyzed data for all 972 games of the Japan national high school baseball championship tournaments between 1996 and 2015, and the following 5 results were obtained. There was a trend in past Koshien tournaments for weaker schools to bat first when playing against stronger schools (52.8 percent, P = 0.091). The winning percentage for the former was 35.5%, which was significantly lower (P <0.001) than the chance level (50%). In addition, the winning percentage for batting first in games between schools with similar levels of past performance was 44.7%, which was significantly lower (P = 0.025) than the chance level (50%). In games between schools with similar levels of past performance, the winning percentage varied for teams batting first when the bottom half of each inning ended in a tie. In games in which teams were tied at the end of the 6th and 7th innings, the winning percentage of the team batting first was significantly lower (36.0%, P = 0.033; 34.0%, P = 0.016). In other words, Hypothesis 3 was supported, Hypothesis 1 was partially supported, but Hypothesis 2 was not supported. These findings indicate that the higher winning percentage for batting second is attributable to the fact that the weaker school regards itself as inferior to its opponent and therefore chooses to bat first (i.e., the weaker school chooses to bat first) and that the psychological pressure faced when batting first versus batting second differs when there is a tie in the later innings (i.e., a tied score in later innings favors the team that bats second).

著者

松尾 知之 平野 裕一 川村 卓

出版者

一般社団法人 日本体育学会

雑誌

体育学研究 (ISSN:04846710)

巻号頁・発行日

vol.55, no.2, pp.343-362, 2010 (Released:2010-12-28)

参考文献数

43

被引用文献数

4 2

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The purposes of this study were to elicit experiential knowledge from expert baseball pitchers and baseball coaches, to elucidate key coaching points related to movement in baseball pitching, to classify them into categories, and to investigate any commonality among them. Semi-structured interviews were conducted with four former Japanese professional baseball pitchers and seven expert high-performance (national level) Japanese baseball coaches. Each interviewee was requested to comment on the pitching of 25 amateur baseball pitchers (11 junior high school, 8 high school, and 6 collegiate baseball pitchers), which had been videotaped beforehand. The comments were recorded, dictated literally, and divided into segments on the basis of meaning unit. Based on the properties of the various meaning units, some were gathered and classified into categories. For this process, we conducted a member check and triangulation to improve reliability and validity. We extracted 3283 units and classified them into 14 general categories and 71 specific categories. The most frequent category was “trunk open and quick turn during the stride and arm cocking phases”. However, this accounted for only 5.5% of the total meaning units. The next most frequent categories were “weighting on the pivot foot in the balanced position and during the stride phase” (4.7%) and “the throwing arm movement during the stride phase” (4.6%). The contents of all categories covered various aspects of movement. Among the relatively frequent categories, a few elicited the same opinion among the interviewees, but some had different opinions even about the same pitcher. These results suggest that there is a diversity of coaching points among coaches, and that it is important to know the categories that are determinative and those that should be chosen selectively.

著者

大久保 英哲

出版者

日本体育学会 = Japan Society of Physical Education

雑誌

体育学研究 = Japan Journal of Physical Education, Health and Sport Sciences (ISSN:04846710)

巻号頁・発行日

vol.38, no.3, pp.157-173, 1993-09-01

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The purpose of this paper is to investigate Hayashi Shojuro's seldom explored translation, "Mokuba no Sho" (The Book of Wooden Horse) and its publishing history, and to determine its meaning for the modern physical education in Japan. "Mokuba no Sho" is more of a book on horse vaulting than simply a book on horse riding because of its description of the five kinds of exercises from the back of the horse and twelve exercises from the side of horse. The contents of this book are in complete agreement and comspicious similarity to the French Army's textbook on gymnastics instruction "Ministere de la guerre (1st Ed. 1847) :Instruction pour l'enseignement de la gymnastique". Therefore, it is unquestionable that "Mokuba no Sho" was translated from it. Hayashi Shojuro (1824-1896, formerly a professer of French at Kaiseisho, National Academic Institute) was one of the most famous scholars at the end age of the Edo period.From December 1866 to the early spring of 1868, he also held an additional post as the official French translator for the Japanese Army in the cavalry, artillery and infantry divisions. This was necessary because the Tokugawa Shogunate employed a party of military advisers from France, whose leader was Captain Chanoine. Even though the translation of "Mokuba no Sho" is not clearly dated, it can be presumed that it was prepared in 1867 because of Hayashi's occupation as a translator for the party of French Military advisers and his subsequent military service for the Tokugawa Shogunate in the Boshin civil war from early 1868. It is well known fact that the party of French military adviser seriously considered basic gymnastics as necessary for soldier training, and taught Japanese soldiers how to do gymnastics (rentaiho). Furthermore, in the memorial presented to shogunate in 1867 (The Chanoine Memorial), it is clearly written that the party had brought with them a fully illustrated book on gymnastics. Initially Hayashi Shojuro read the book as the official translator. He took particular notice of the section on horse vaulting as training for the cavalry and subsequently translated it into Japanese. The historical meanings of this book for physical education in modern Japan are as follows : 1. It is the oldest book dealing with the physical education of the west. 2. This is a memorable book in the history of Japanese physical education because it was the first academic study based on an original foreign text, "Ministere de lA guerre (1st Ed.1847) : Instruction pour l'enseignement de la gymnastique." 3. During the first half of the Meiji period French gymnastics were for the most part by the military. For example, "Taiso Kyohan" (Textbook of Gymnastics) was written by the military, modeled after the French version. It was later applied to physical education in Japan's middle school System. "Mokuba no Sho" was the first book in the history on French gymnastics in the Meiji period. 4. This is the first book in which the scientific term of the study of physical education as "shintai undo gaku" (science of physical movement) was used. 5. This book shows us that the apparatus of gymnastics in Japan was derived from the French military gymnastics, especially horse vaulting for the training of the cavalry. Above all, "Mokuba no Sho" is memorable as the book which introduced modern European physical education to Japan.