著者

加藤 謙一 宮丸 凱史 松元 剛

出版者

社団法人日本体育学会

雑誌

体育學研究 (ISSN:04846710)

巻号頁・発行日

vol.46, no.2, pp.179-194, 2001-03-10

被引用文献数

3

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A study was conducted to investigate the characteristics of sprint motion in top-ranking elementary school sprinters. The subjects were 10 first-class elementary school sprinters (sprinter group), and 31 standard elementary school children (control group), all aged 12 years. Measurements were performed for sprint speed, step frequency, step length, and sprint motion in terms of angular kinematics for both groups. In addition, the isokinetic peak torques at 60 and 180 deg/s were analyzed. The results obtained were as follows: The mean values of body height and mass were larger for the sprinter group than for the control group. Isokinetic peak torques during knee extension and flexion (angular velocity; 60, 180deg/s) were greater for the sprinter group than for the control group. The sprint speed, step length, and step frequency of the sprinter group were significantly greater than those of the control group. On the other hand, the support time of the sprinter group was significantly shorter than that of the control group. The relationship between sprint speed and sprint motion in the sprinter group was as follows: The maximal thigh lift angle (θT) showed a negative correlation (r = - 0.369) with sprint speed, and the ankle joint angle at the moment of foot contact (θA-on; r = - 0.619) and the minimal angle of the ankle joint during the foot contact phase (θA-min; r = - 0.372) showed a negative correlation with sprint speed. However, the maximal extension velocity of the ankle joint (ωA) showed a positive correlation (r = 0.326) with sprint speed. Although sprint motion in the sprinter group showed specific features, the correlation between sprint speed and sprint motion was not significant in either group. In particular, positively and negativity were contrary in the relation between θA-on, θA-min and ωA and sprint speed in the sprinter group, compared with the correlations in adult sprinters. The relationship between sprint speed and sprint motion showed that sprint motion in the sprinter group was not always similar to that in adult sprinters.

著者

松尾 博一 松元 剛

出版者

日本コーチング学会

雑誌

コーチング学研究 (ISSN:21851646)

巻号頁・発行日

vol.35, no.2, pp.285-294, 2022-03-20 (Released:2022-05-09)

参考文献数

20

被引用文献数

2

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The purpose of this study was to clarify the issues that Japanese American football players need to overcome in trying to sign a contract with an NFL team through interviews. The subjects were four Japanese American football players who had participated in the training camp of an NFL team in the past. Interviews were conducted in person. The content of the interviews was recorded with the subjects' permission, and the recorded audio was transcribed. The content related to each issue was coded and classified. As a result, three main issues were identified: issues related to competition, issues outside of competition, and issues related to the athletic experience in the United States. When Japanese players aspire to play in the NFL, they must deal with the athletic challenges they face at each football position and overcome the non-athletic challenges they face by learning the language and receiving support from various people. In addition, they need to adapt to the competitive environment in the United States by gaining football playing experience as soon as possible.

著者

福田 崇 宮川 俊平 松元 剛

出版者

筑波大学体育科学系

雑誌

体育科学系紀要 (ISSN:03867129)

巻号頁・発行日

vol.34, pp.151-158, 2011-03

著者

松元 剛 Matsumoto Tsuyoshi

出版者

筑波大学体育科学系

雑誌

体育科学系紀要 (ISSN:03867129)

巻号頁・発行日

vol.33, pp.69-76, 2010-03

著者

奥寺 由紀 松元 剛 本間 三和子

出版者

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

no.56, 2005-11-01

著者

春山 圭佑 松元 剛 森 慎太郎 福田 崇 中川 昭 阿江 通道

出版者

日本コーチング学会

雑誌

コーチング学研究 (ISSN:21851646)

巻号頁・発行日

vol.24, no.3, pp.79-80, 2011 (Released:2021-12-28)

著者

松元 剛 春山 圭佑 福田 崇

出版者

日本臨床スポーツ医学会

雑誌

日本臨床スポーツ医学会誌 (ISSN:13464159)

巻号頁・発行日

vol.22, no.1, pp.152-159, 2014

著者

春山 圭佑 松元 剛 森 慎太郎 福田 崇 中川 昭 阿江 通道

出版者

日本コーチング学会

雑誌

コーチング学研究 (ISSN:21851646)

巻号頁・発行日

vol.24, no.3, pp.79-80, 2011

著者

森 慎太朗 松元 剛 中川 昭 阿江 通良

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.61, 2010

著者

松尾 博一 山田 幸雄 増地 克之 松元 剛

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.353-367, 2019-06-17 (Released:2019-06-25)

参考文献数

31

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The purpose of this study was to extract current issues associated with the understanding of tackling techniques taught by college football coaches in Japan. The goal was to acquire fundamental information for a coaching method that would promote safe and effective tackling techniques. A total of 99 college football coaches from Japan (mean age 36.7±0.5 years) took part in the study. A questionnaire was conducted in order to understand key points that were considered important in their coaching methods. The results and observations can be summarized as follows. 1. Tackling techniques taught by football coaches in Japan often lead to concussions. This is due to coaching methods that focus heavily on tackling techniques with high concussion risks, and placing no importance on HUT-based tackling. In addition, their understanding of the “Hit” phase and “HUT” varies, leading to a greater possibility of teaching tackling with a high risk of concussion. 2. Regardless of factors such as age, the position taken as an active player, the instructor’s income, and coaching qualifications, coaches who do not have much player or coach experience have an increased tendency to teach tackling techniques associated with high risks of concussion and injury. 3. In order to prevent concussions and promote safer tackling coaching in Japan, it is crucial for coaches who have little experience in playing or coaching to have access to appropriate information and education opportunities, and for coach certification programs to be improved.

著者

松尾 博一 相澤 くるみ 井上 雄平 松元 剛

出版者

筑波大学体育センター

雑誌

大学体育研究 = Journal of Sport and Physical Education Center, University of Tsukuba (ISSN:03867129)

巻号頁・発行日

vol.40, pp.47-64, 2018-03

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Currently, the Japanese government has been considering the establishment of an umbrella organization for governing college sports in Japan, which models the National Collegiate Athletic Association (NCAA) in the United States (U.S.). However, little academic literature exists in Japan that has examined the historical background of the NCAA. The aim of this paper is to address this knowledge gap and examine the historical background of the NCAA. In particular, the paper analyzes previous empirical studies and reports published mainly in the U.S. regarding U.S. college sports and the NCAA. From this analysis, the current study reveals the background of the NCAA, starting from the 19th century when the NCAA was not in existence. The structure of this paper is as follows. First, the history of the NCAA is divided into four phases: 1) before the establishment of the NCAA from the early period of the 19th century to 1910, 2) the early period of the NCAA from 1910 to the 1950s, 3) the transitional period of the NCAA from the 1960s to 2000, and 4) the modern NCAA from 2000 to present. Second, many challenges faced by the NCAA including the commercialization of college sports, amateurism, gender equity, and racial issues are discussed, followed by an analysis of how the NCAA has developed solutions to these challenges. In establishing the Japanese version of the NCAA, it is essential to consider the historical background of the NCAA and project how the current challenges facing the organization as well as its solutions to these challenges may be translated to the future landscape of college sports in Japan.

著者

松尾 博一 山田 幸雄 増地 克之 松元 剛

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.62, no.2, pp.665-677, 2017 (Released:2017-12-19)

参考文献数

32

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The purpose of this study was to verify the effectiveness of the Heads Up Tackling program for defensive players and its influence on safety and performance. Head impacts in football players are directly associated with brain and spine injury, and have been proposed to be associated with injuries such as chronic traumatic encephalopathy (CTE). Therefore, improvement of safety has been a challenge in American football, from the perspective of injury prevention. In 2012, USA Football, the national governing body for amateur American football in the USA developed the Heads Up Football (HUF) program which included “Heads Up Tackling” (HUT), a set of new guidelines for tackling. HUT has been attracting attention in the context of safe tackling through a new coaching methodology. Although in Japan so far, there have been no reports of football-related chronic injuries caused by head impacts, many concussions occur in football games. Therefore, it seem necessary to identify a methodology for teaching tackling techniques in order to reduce the risks of head and neck injury. A number of studies have focused on coaching intervention in relation to safety, and for reducing head impact exposure and injury. However, no reports have focused on the impact of these efforts on athletic performance during a game. If it could be confirmed that HUT reduces the risk of injury in football games without decreasing athlete performances, it would be a useful resource for instruction on tackling skills. Here, 4 matches in the Japan top league (X-league) 2014 and 2015 season were analyzed, before and after HUT intervention was executed in the preseason of 2015. A total of 166 coded tackles were compared in terms of “tackling characteristics”, “amount of injuries”, “effectiveness of tackling”, and “loss of yards” to examine the effect of HUT techniques on “safety” and “effectiveness”. The results revealed that (1) the frequency of “head down” tackling was significantly lower after HUT intervention, (2) the “amount of injuries” was reduced after HUT intervention, (3) there was no effect on the “effectiveness of tackling” in games, (4) “loss of yards” was reduced after HUT intervention, and (5) HUT appeared to reduce the risks of injury in football games, without decreasing tackling performance.

著者

松元 剛

出版者

労働者学習センター

雑誌

ひろばユニオン

巻号頁・発行日

no.676, pp.14-16, 2018-06

著者

松元 剛

出版者

東京市政調査会

雑誌

都市問題 (ISSN:03873382)

巻号頁・発行日

vol.101, no.3, pp.30-34, 2010-03

著者

松元 剛

出版者

筑波大学体育科学系

雑誌

筑波大学体育科学系紀要 (ISSN:03867129)

巻号頁・発行日

vol.33, pp.69-76, 2010-03

著者

松元 剛 榎本 靖士 金谷 麻理子

出版者

筑波大学体育センター

雑誌

大学体育研究 (ISSN:03867129)

巻号頁・発行日

no.35, pp.121-127, 2013-03

著者

大森 肇 坂本 昭裕 松元 剛

出版者

筑波大学体育センター

雑誌

大学体育研究 (ISSN:03867129)

巻号頁・発行日

no.35, pp.113-119, 2013-03

著者

松元 剛

出版者

筑波大学体育センター

雑誌

大学体育研究 (ISSN:03867129)

巻号頁・発行日

no.35, pp.27-36, 2013-03