著者

水島 淳

出版者

心の科学の基礎論研究会

雑誌

こころの科学とエピステモロジー (ISSN:24362131)

巻号頁・発行日

vol.5, no.1, pp.21-44, 2023-05-15 (Released:2023-06-02)

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本論文は、反出生主義の精緻化を目指し、その上で切り捨てられることになる感情、特に〈生まれてこない方がよかった〉に注目し、そのケアも同時に目指したものである。反出生主義を「人間、場合によってはすべての有感生物から苦痛を取り除く思想」とし、現代反出生主義が感情の範疇である可能性と理性と論理だけで組み上げた反出生主義の冷酷さ示す。そして理性によって退けられる感情である〈生まれてこない方がよかった〉を3つの視点からケアする道を探っていく。その3つの視点とは「基本的自尊感情」、「いるからいる」、「死にたい」へのケア方法の応用である。

著者

前田 奎 大山卞 圭悟 関 慶太郎 水島 淳 広瀬 健一 尾縣 貢

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.18002, (Released:2019-01-21)

参考文献数

38

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The purpose of this study was to investigate, using path analysis, causal relationships among motion factors for achieving a high release velocity in the male discus throw. The throwing motions of 61 male discus throwers were analyzed using three-dimensional motion analysis. Variables such as release velocity, velocities gained by each body segment, body segment velocity, body angle and angular velocity were obtained. The path model indicating the causal relationships among these factors was constructed by path analysis. The main results were as follows: Influences of velocities gained by each body segment on release velocity were largest for the arm, followed in order by the trunk and legs. Motion factors such as weight shift, acquisition of the velocity of the center of gravity, sweeping the legs, rotations of the hip and shoulder, twisting and untwisting of the trunk, acquisition of the velocity of the right knee and extension of the left knee had direct or indirect influences on the velocities gained by each body segment. Motion factors in the path model revealed causal relationships along the time sequence of the throwing motion. In addition, the path model in this study indicated the cause and effect structure of the throwing motion by which Japanese male discus throwers were able to achieve a high release velocity. The results of this study can be utilized for technical coaching of the discus throw based on causal relationships.

著者

水島 淳 梶谷 亮輔 九鬼 靖太 柴田 篤志 前田 奎 大山 卞 圭悟 尾縣 貢

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.66, pp.703-714, 2021 (Released:2021-10-20)

参考文献数

28

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Introduction: The purpose of this study was to investigate the effects of a 4-week barefoot sprint training program on sprint biomechanics and stretch-shortening cycle jump ability. Methods: Fourteen children with no experience in barefoot sprinting were randomly assigned to 1 of 2 groups: a barefoot training group (3 boys and 4 girls; age, 11.0 ± 0.8 years-old; height, 143.1 ± 8.4 cm; body mass, 35.4 ± 5.6 kg; shoe mass, 0.17 ± 0.02 kg) and a control group (3 boys and 4 girls; age, 11.0 ± 0.8 years-old; height, 142.6 ± 8.2 cm; body mass, 34.4 ± 6.4 kg; shoe mass, 0.18 ± 0.01 kg). The 4-week intervention consisted 40 minutes of sprint training per weekly session using the allocated footwear. Before and after the intervention, 2-dimensional biomechanical analysis of the 50-m maximal sprint under both shod and barefoot conditions, and the countermovement jump and 5 repeated rebound jumping tests were performed by both groups. Pre- to post-test changes in spatio-temporal parameters and sprint kinematics, and jump heights for both jump types, and the contact time and rebound jump index for the rebound jump, were analysed using 2-way mixed ANOVA. Results and Discussion: After the 4-week intervention, a higher step frequency (p <0.01), a longer step length (p <0.05), and a higher sprint velocity (p <0.01) were observed in the barefoot training group, although no change was observed in the foot strike patterns and the swing leg velocity. The barefoot training group showed a higher rebound jump index (p <0.05) and a shorter contact time (p <0.01), while no differences were evident in the counter-movement jump height. These results suggest that 4-week barefoot sprint training seems to be an effective strategy for improving certain aspects of sprint biomechanics and for development of fast stretch-shortening cycle ability in children.

著者

前田 奎 大山卞 圭悟 関 慶太郎 水島 淳 広瀬 健一 尾縣 貢

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.64, no.1, pp.21-36, 2019-06-17 (Released:2019-06-25)

参考文献数

38

被引用文献数

1

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The purpose of this study was to investigate, using path analysis, causal relationships among motion factors for achieving a high release velocity in the male discus throw. The throwing motions of 61 male discus throwers were analyzed using three-dimensional motion analysis. Variables such as release velocity, velocities gained by each body segment, body segment velocity, body angle and angular velocity were obtained. The path model indicating the causal relationships among these factors was constructed by path analysis. The main results were as follows: Influences of velocities gained by each body segment on release velocity were largest for the arm, followed in order by the trunk and legs. Motion factors such as weight shift, acquisition of the velocity of the center of gravity, sweeping the legs, rotations of the hip and shoulder, twisting and untwisting of the trunk, acquisition of the velocity of the right knee and extension of the left knee had direct or indirect influences on the velocities gained by each body segment. Motion factors in the path model revealed causal relationships along the time sequence of the throwing motion. In addition, the path model in this study indicated the cause and effect structure of the throwing motion by which Japanese male discus throwers were able to achieve a high release velocity. The results of this study can be utilized for technical coaching of the discus throw based on causal relationships.

著者

水島 淳 広瀬 健一

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.297-302, 2022 (Released:2022-05-11)

参考文献数

17

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Communities of practice have been applied in coach development programs around the world. The purpose of the current study was to explore the concept of community of practice, the theoretical background, the literature on community of practice for sport coaches, and the value creation process in community of practice. The findings of this study should offer some insight into how we can implement community of practice for coach learning and development.

著者

水島 淳 広瀬 健一

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.21158, (Released:2022-03-25)

著者

水島 淳 前田 奎 広瀬 健一 大山卞 圭悟 尾縣 貢

出版者

The Japan Journal of Coaching Studies

雑誌

コーチング学研究 (ISSN:21851646)

巻号頁・発行日

vol.32, no.1, pp.71-78, 2018-10-20 (Released:2019-09-02)

参考文献数

21

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The aim of this study was to investigate the coaching beliefs of foreign high-performance track and field coaches in South East Asian countries. Five foreign coaches from Germany, Portugal, and New Zealand who represented Malaysia and Singapore in track and field events at the South East Asian Games in 2017 were asked to participate and were interviewed in this study. For the purposes of this research, the factors believed most important for coaching from the coach’s perspective were asked. The results showed that the coaching beliefs of foreign high-performance track and field coaches in South East Asian countries were divided into 3 categories. These were (a) goal oriented: developing athletes’ competence and developing athletes’ character; (b) coaches’ knowledge oriented: professional knowledge, and interpersonal and intrapersonal knowledge; and (c) coaching context oriented: coaching context.

著者

水島 淳

出版者

早稲田大学人間総合研究センター

雑誌

現代生命哲学研究

巻号頁・発行日

vol.10, pp.78-95, 2021-03

著者

前田 奎 大山卞 圭悟 加藤 忠彦 水島 淳 山本 大輔 梶谷 亮輔 広瀬 健一 尾縣 貢

出版者

一般社団法人 日本体育学会

雑誌

日本体育学会大会予稿集

巻号頁・発行日

vol.69, pp.206_3, 2018

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<p> 円盤投の指導現場において、投てき動作前半の局面で円盤あるいは円盤を保持する腕を積極的に加速させる動作について、「円盤を走らせる」という表現が用いられている。この「円盤を走らせる」動作は、効率の良い投てき動作を遂行させる上で重要であると指導現場では認識されているが、実際に競技力の高い円盤投競技者ほど「円盤を走らせている」のか、という疑問が生じる。そこで本研究では、「円盤を走らせる」動作に関連すると考えられるパラメータとパフォーマンスとの関係について明らかにすることを目的とした。国内一般レベルから世界トップレベルまでの記録を有する男子円盤投競技者62名(記録:38.05 – 68.94m)を対象に、競技会での投てき動作を撮影し、3次元動作分析を行った。円盤の速度について確認したところ、第一両脚支持局面の変化量および右足離地時点について、対象者全体で見た場合、投てき距離との間に有意な正の相関関係が認められた。しかし、競技レベルごとに見ると、世界トップレベル競技者12名については、有意な負の相関関係が認められたのに対して、国内競技者50名については、有意な正の相関関係が認められた。</p>

著者

水島 淳 小山 宏之 大山 卞圭悟

出版者

Japan Society of Human Growth and Development

雑誌

発育発達研究 (ISSN:13408682)

巻号頁・発行日

vol.2016, no.73, pp.13-19, 2016 (Released:2017-01-11)

参考文献数

22

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Purpose:The purpose of this study was to compare the difference of characteristics of sprinting between barefoot and shod conditions, in relation to jumping abilities in children.Method:94 children aged 6-12 years performed short sprints (30 m), counter movement jumping (CMJ) as a non-ballistic jumping and five repeated-rebound jumping (RJ) as a ballistic jumping. Sprinting conditions were randomized for each child in order to compare barefoot sprinting with shod conditions. High speed camera with 1/1000 second shutter speed was used to record calibration marks and performances of the children at a frame rate of 300 frame/second. The cameras were placed 20 m apart from the motion plane. Besides 5 video cameras from 5 angles obtained images of entire stance phase (right before foot strike to taking the toe off). Foot strikes were classified into 3 patterns:rear-foot strike (RFS) that land on the heel, mid-foot strike (MFS) that land with a flat foot, and fore-foot strike (FFS) that land on the fore-foot before bringing down the heel. Jumping abilities were assessed using CMJ jumping height and the value obtained by dividing jumping height by the ground contact time in 5RJ (RJ-index).Results and Discussion:Under barefoot condition children significantly sprinted with lower velocity (p<0.05), higher step frequency (p<0.01), shorter step length (p<0.01) and shorter contact time (p<0.01). Additionally, barefoot condition induced the shift of ground contact manner from RFS to FFS and MFS. Children who sprinted faster with barefoot had higher jumping abilities than children who sprinted faster with shoes. Increased percentage of FFS and MFS in barefoot sprinting appears to enhance the utilization of elasticity produced in arches and Achilles tendon, which may affect positively to sprint performance for children who sprinted faster with barefoot. The result also indicated that jumping ability is higher in children who sprinted faster with barefoot. Our finding suggested that common factor could have effect on the ability of barefoot sprinting and jumping in children.