著者
平嶋 裕輔 中山 雅雄 内藤 清志 浅井 武
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.805-816, 2014 (Released:2014-12-20)
参考文献数
24
被引用文献数
3

The purpose of this study was to clarify the principal factors related to shot situations that affect the outcome of goalkeeping saves in soccer and to build a regression formula that would predict the difficulty of saving a shot. The samples were 551 shots at goal in the 2010 FIFA World Cup in South Africa. The shots data were collected using game performance analysis. For statistical processing, the principal factors affecting the outcome of a save in soccer were revealed using logistic regression analysis. The principal factors that influenced the results of a save attempt were: the duration between initiation of the shot and when the ball reached the goal, the presence or absence of a defender in front of the shooter, the presence or absence of a defender located lateral or posterior to the shooter, the part of the body used to perform the shot, i.e. the head or the leg, the type of shot, i.e., a liner, a lob, or a grounder, the shot course in a mediolateral direction, the shot course in a vertical direction, the presence or absence of a change in the direction of the shot by other players, the shooter's position angle in relation to the goal line and the line from the goal post to the shooter, and the distance from the center of the goal to the ball when the ball reached the goal line. In addition, a regression formula was constructed to predict the difficulty of the save by combining the odds ratios of the main factors. It was verified that the difficulty in making a save could be accurately predicted using the regression formula (84.8%). As a future task, using our regression formula, it would be practically important to develop predictors for evaluating the ability of a goalkeeper.
著者
平嶋 裕輔 中山 雅雄 内藤 清志 浅井 武
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.13106, (Released:2014-09-20)
参考文献数
24
被引用文献数
3

The purpose of this study was to clarify the principal factors related to shot situations that affect the outcome of goalkeeping saves in soccer and to build a regression formula that would predict the difficulty of saving a shot. The samples were 551 shots at goal in the 2010 FIFA World Cup in South Africa. The shots data were collected using game performance analysis. For statistical processing, the principal factors affecting the outcome of a save in soccer were revealed using logistic regression analysis. The principal factors that influenced the results of a save attempt were: the duration between initiation of the shot and when the ball reached the goal, the presence or absence of a defender in front of the shooter, the presence or absence of a defender located lateral or posterior to the shooter, the part of the body used to perform the shot, i.e. the head or the leg, the type of shot, i.e., a liner, a lob, or a grounder, the shot course in a mediolateral direction, the shot course in a vertical direction, the presence or absence of a change in the direction of the shot by other players, the shooter's position angle in relation to the goal line and the line from the goal post to the shooter, and the distance from the center of the goal to the ball when the ball reached the goal line. In addition, a regression formula was constructed to predict the difficulty of the save by combining the odds ratios of the main factors. It was verified that the difficulty in making a save could be accurately predicted using the regression formula (84.8%). As a future task, using our regression formula, it would be practically important to develop predictors for evaluating the ability of a goalkeeper.
著者
山田 孝良 立松 憲親 内藤 清 鈴木 健夫
出版者
Japanese Society for Oral Health
雑誌
口腔衛生学会雑誌 (ISSN:00232831)
巻号頁・発行日
vol.16, no.3, pp.117-124, 1966 (Released:2010-10-27)
参考文献数
21

Significance of changes in the teeth especially Hutchinson and Fournier teeth among student of schools for the blind and deaf was reported from our Department about 10 years ago. In order to assess the recent situation, 124 students were examined in a school for the blind concerning the intraoral state from an odontological point of view.Abnormalities in the development and morphology of the teeth, degree of carious state, pyorrhea, state of the cleaning of the oral cavity, presence of deposition around the teeth, and relationship with diseases of the eye were investigated. No difference was found between students in the school for the blind and other healthy subjects concerning the degree of carious state, alveolar pyorrhea, state of the cleaning of the oral cavity, and deposition around the teeth. In 4 students Hutchinson and Fournier teeth were noted simultaneously, while Hutchinson teeth alone were noted in 1 and Fournier teeth alone were seen in 8. Among those, congenital complete or almost complete blindness was seen in 8 and acquired complete or almost complete blindness was seen in 5, indicating a pronounced decrease as compared with the result of 10 years ago.