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Hokkaido University Collection of Scholarly and Academic Papers >
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The effects of relative trunk rotation velocity on ball speed and elbow and shoulder joint torques during baseball pitching
| Title: | The effects of relative trunk rotation velocity on ball speed and elbow and shoulder joint torques during baseball pitching |
| Authors: | Tanaka, Yousuke Browse this author | | Ishida, Tomoya Browse this author | | Ino, Takumi Browse this author →KAKEN DB | | Suzumori, Yuki Browse this author | | Samukawa, Mina Browse this author →KAKEN DB | | Kasahara, Satoshi Browse this author →KAKEN DB | | Tohyama, Harukazu Browse this author →KAKEN DB |
| Keywords: | Baseball pitching | | trunk rotation movement | | ball speed | | shoulder external rotation | | elbow valgus |
| Issue Date: | 12-Oct-2022 |
| Publisher: | Taylor & Francis |
| Journal Title: | Sports biomechanics |
| Publisher DOI: | 10.1080/14763141.2022.2129431 |
| PMID: | 36223307 |
| Abstract: | In baseball pitching, suppressing trunk rotation while rotating the pelvis in the early phase of arm cocking is important for throwing a fast ball. However, quantitative evaluation of trunk rotation during pitching has not been established, and its associations with elbow and shoulder torques are unclear. The purpose of this study was to examine the correlation of a new measure of trunk rotation suppression with ball speed and elbow and shoulder torques during pitching. Eighteen adult male baseball pitchers (21.7 +/- 1.2 years old) participated. Three qualified pitches were analysed using a three-dimensional motion capture system. Trunk rotation velocity, normalised to the peak velocity, was derived at the time of peak pelvic velocity. Pearson's correlation coefficient was used to determine correlations. The normalised trunk rotation velocity at the peak pelvic velocity was significantly correlated with elbow valgus torque (R = -0.508, P = 0.032), shoulder external rotation torque (R = -0.507, P = 0.032) and ball speed (R = -0.504, P = 0.033). A smaller normalised trunk rotation angular velocity at the time of peak pelvic rotation velocity could increase ball speed but may also increase elbow and shoulder torques among pitchers who demonstrate trunk rotation after foot contact. |
| Rights: | This is an Accepted Manuscript of an article published by Taylor & Francis in Sports Biomechanics on 12 Oct 2022, available at: http://www.tandfonline.com/10.1080/14763141.2022.2129431. |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/90548 |
| Appears in Collections: | 保健科学院・保健科学研究院 (Graduate School of Health Sciences / Faculty of Health Sciences) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 石田 知也
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