WEKO3
-
RootNode
アイテム
発育期の野球投手におけるボールスピンの特徴
https://chukyo-u.repo.nii.ac.jp/records/9800
https://chukyo-u.repo.nii.ac.jp/records/9800661bb2c6-3dec-4cb9-9ce8-73a6e40ae70d
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
KJ00005437401.pdf (525.4 kB)
|
|
| Item type | [ELS]紀要論文 / Departmental Bulletin Paper_02(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2016-11-14 | |||||
| タイトル | ||||||
| タイトル | 発育期の野球投手におけるボールスピンの特徴 | |||||
| タイトル | ||||||
| タイトル | Characteristics of ball spin pitched by baseball pitchers in the period of development | |||||
| 言語 | en | |||||
| 言語 | ||||||
| 言語 | jpn | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
| 資源タイプ | departmental bulletin paper | |||||
| 雑誌書誌ID | ||||||
| 収録物識別子タイプ | NCID | |||||
| 収録物識別子 | AN00081735 | |||||
| 著者 |
神事, 努
× 神事, 努× 桜井, 伸二× 清水, 卓也× 鈴木, 康博× JINJI, Tsutomu× SAKURAI, Shinji× SHIMIZU, Takuya× SUZUKI, Yasuhiro |
|||||
| 著者所属(日) | ||||||
| 国立スポーツ科学センタースポーツ科学研究部 | ||||||
| 著者所属(日) | ||||||
| 中京大学体育学部 | ||||||
| 著者所属(日) | ||||||
| 中京大学大学院体育学研究科:中京大学保健センター | ||||||
| 著者所属(日) | ||||||
| 愛知県立蒲郡高等学校 | ||||||
| 記事種別(日) | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | 原著論文 | |||||
| 記事種別(英) | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | Original Article | |||||
| 抄録(英) | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | It has been reported that the spin axis of a pitched baseball differs between adult pitchers and youth pitchers (Tezuka and Himeno 2001). However, that information was based on visual observation, and has not been determined quantitatively. The purpose of this study was to investigate the ball spin orientation and spin rate of youth pitchers compared with those for adult pitchers. In addition, the development of the throwing motion and factors in the determination of spin rate were discussed. Fourteen youth baseball pitchers (13.9±1.2 years) and nine collegiate baseball pitchers (20.1± 0.8 years) were selected as subjects. All of them were classified as over-hand style pitchers. The baseball was filmed immediately after the ball release using a high-speed video camera (250 Hz). The direction of spin axis and the spin rate were calculated using positional changes of drawn marks on the ball surface. The direction of the spin axis was defined by two angles, θ(azimuth) and φ(elevation). The angle between spin axis and pitching direction (α) was also obtained (Jinji and Sakurai 2006). Mean values of the angles of the spin axis showed no significant differences between youth pitchers and collegiate pitchers. As for variations within each trial, however, youth pitchers were significantly more inconsistent than collegiate pitchers. Although youth pitchers have acquired similar pitching motion to adults on average, their motion was often unstable with large variations. There was a significant difference in the mean values of spin rate between the youth pitchers and collegiate pitchers (p<0.001). Moreover, the spin rate correlated significantly with the initial ball velocity (p<0.001). Pitchers with a higher initial velocity achieved a notably higher spin rate. It was concluded that a pitching motion that increased the ball velocity consequently increased spin rate. | |||||
| 書誌情報 |
中京大学体育学論叢 en : Research journal of physical education Chukyo University 巻 49, 号 1, p. 21-27, 発行日 2008-01-01 |
|||||
| 表示順 | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | 4 | |||||
| アクセション番号 | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | KJ00005437401 | |||||
| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 02887339 | |||||
