著者

一階 千絵

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

vol.65, 2014

著者

紅楳 英信 横澤 俊治 湯田 淳

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

vol.62, 2011

著者

竹中 俊輔 結城 匡啓 阿江 通良

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.60, 2009-08-26

著者

孫 煥

出版者

社団法人日本体育学会

雑誌

日本体育学会大会号

巻号頁・発行日

no.47, 1996-08-25

著者

新井野 洋一

出版者

社団法人日本体育学会

雑誌

日本体育学会大会号

巻号頁・発行日

no.38, 1987-08-15

著者

野村 照夫 赤井 聡文

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

劉 偉青 來田 享子

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.61, 2010-09-08

著者

山田 庸

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.62, 2011-09-25

著者

池田 修 佐伯 紘一 相部 保美

出版者

社団法人日本体育学会

雑誌

日本体育学会大会号

巻号頁・発行日

no.29, 1978-12-17

著者

安松 幹展 戸苅 晴彦 磯川 正教 丸山 剛生 金子 保敏 沼澤 秀雄 福井 真司 石崎 聡之

出版者

社団法人日本体育学会

雑誌

日本体育学会大会号

巻号頁・発行日

no.50, 1999-09-15

著者

三上 恵里 福 典之 高橋 英幸 大岩 奈青 樋口 満 川原 貴

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.62, 2011-09-25

著者

田中 秀幸

出版者

社団法人日本体育学会

雑誌

日本体育学会大会号

巻号頁・発行日

no.42, 1991-09-10

著者

長田 典昭

出版者

社団法人日本体育学会

雑誌

日本体育学会大会号

巻号頁・発行日

no.31, 1980-10-11

著者

宮西 智久 森本 吉謙

出版者

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.52, no.4, pp.361-381, 2007

被引用文献数

1 3

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A three-dimensional (3D) videography study was performed to clarify the mechanical effects of a change of pitching motion from an overhand throw (OH style) to a three-quarter throw (TQ style). Two collegiate pitchers (subjects A and B) who normally used the OH style participated. They were requested to change their original OH style into the TQ style. To do this, they were subjected to a one-year skill training program based on biomechanical principles and on knowledge such as the stretch-shortening cycle theory, muscle force-velocity relationship, and the motions of skilled pitchers (e.g., shoulder positioning at 90 degrees of abduction-adduction during the acceleration phase). Four pitches for subject A (two in pre-training, one during training and one in post-training), and three for subject B (one each in pre-training, training and post-training) were videotaped with the 3D DLT procedure using two high-speed cameras, and then analyzed. We then examined the mechanical differences between pre- and post-training. The speed of the ball at release increased progressively with every successive pitch for both subjects (Subject A : 1<SUP>st</SUP> : 130.3km/h ; 2<SUP>nd</SUP> : 133.2km/h ; 3<SUP>rd</SUP> : 135.7km/h ; 4<SUP>th</SUP> : 142.2km/h. Subject B : 1<SUP>st</SUP> : 131.0km/h ; 2<SUP>nd</SUP> : 135.0km/h ; 3<SUP>rd</SUP> : 139.3km/h). The pitching styles of both subjects changed from their original OH style to the TQ style, both qualitatively and quantitatively. The time-dependent patterns and peak values of the angular velocities of shoulder internal-external rotation and elbow flexion-extension of the throwing arm did not change very much. However, the peak value of the angular velocity of shoulder internal rotation occurred immediately after ball release for the OH style, while for the TQ style it occurred at ball release. As a result, the angular velocity of elbow extension at ball release was larger in the OH style than in the TQ style. On the other hand, the angular velocity of shoulder internal rotation at ball release was larger in the TQ style than in the OH style. These findings suggest that the increase in the speed of the ball is dominated by elbow extension in the OH style, and by shoulder internal rotation in the TQ style.

著者

狩野 豊 高橋 英幸 森丘 保典 秋間 広 宮下 憲 久野 譜也 勝田 茂

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.41, no.5, pp.352-359, 1997-01-10

被引用文献数

3

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The relationship between the thigh muscle composition and the sprinting performance was investigated in 11 male adult sprinters (age/20.8±0.9 yrs, 100 m sprint time/11.20±0.33 sec). Axial images of the thigh muscle were taken by magnetic resonance imaging (MRI) at upper (70%) and middle (50%) position in femur. From these images, cross-sectional areas (CSA) of the quadriceps femoris, the hamstring and the adductor muscles were measured. The results of the regression analysis showed significant correlations between 100 m sprint time and both CSA of adductor and hamstring muscles at 70% position (r=-0.72 and r=-0.67, respectively). There were no significant correlations between 100 m sprint time and CSA of adductor or hamstring muscles at 50% position, and neither quadriceps femoris mudcles at 70 nor 50% positions. These results suggest that greater muscle volume of hamstring and adductor at upper position affect sprinting performance.

著者

中山 健

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.61, 2010-09-08

著者

内田 良

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.66, 2015-08-25

著者

高倉 実

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.36, no.4, pp.349-357, 1992-03-01

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The purpose of this study was to investigate the physiological demands on the referees and their movement patterns during rugby games. With this knowledge, training programmes for referees can be more scientifically prepared to meet the physiological demands of the game. Initially seven Japanese regional referees performed a treadmill running test to determine the maximal oxygen uptake (V^^.O_2 max), heart rate (HR) versus V^^.O_2 max regression line to estimate oxygen uptake (V^^.O_2) during rugby games. Referees were investigated for HR via PE3000 heart rate monitor and were filmed with a video tape recorder to estimate the distance covered on the field according to the type of activity performed during rugby games. The results were as follows; 1) The mean V^^.O_2 max of referees was 3.19 l/min (45.3 ml/kg/min). 2) The mean HR of referees during rugby games was 157.4 beats/min, which corresponded to 82.9% of the maximal HR and 77.2% of V^^.O_2 max. As referees performed approximately 50% of actual playing time at an intensity above 8O% of V^^.O_2 max. 3) The mean HR of referees during the second halves were significantly greater than those during the first halves. As for the same referees, the mean HR when refereeing at the semifinal or final game was significantly greater than that when refereeing at the first round. 4) The mean total distance covered in a 60 minute game for a referee was 4315.4 metres.There was no significant difference in distance covered by the referee comparing the first and second halves of a game. 5) Jogging shared the highest percentage of 43.0% of the total distance covered, followed by walking (28.3%) and running (12.5%). There was a considerable amount of backwards movement required by referees (9.9%). A relatively small percentage of distance covered in a game was by sprinting (2.1%) and sidestep (4.2%). From these results, it was suggested that the aerobic work predominated in refereeing and backwards movement was an important action for referees.

著者

荒川 勝彦

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.60, 2009-08-26

著者

原田 儀子 花沢 成一

出版者

社団法人日本体育学会

雑誌

日本体育学会大会号

巻号頁・発行日

no.41, 1990-09-10