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Biomechanical analysis of the pitching characteristics of adult amateur baseball pitchers throwing standard and lightweight balls.
| Content Provider | Europe PMC |
|---|---|
| Author | Kaizu, Yoichi Sato, Ena Yamaji, Takehiko |
| Copyright Year | 2020 |
| Abstract | [Purpose] The purpose of this study was to determine the relationship between pitchingweight and pitching mechanics, including ball reaction force (BRF) and temporalparameters, for the prevention of throwing injury in adult amateur pitchers. [Participantsand Methods] Twenty adult male amateur pitchers (mean age, height, and body mass: 26 ± 3.4years, 1.7 ± 0.03 m, and 71.6 ± 9.5 kg, respectively) randomly pitched light (110 g) andheavy (145 g) baseballs at maximum velocity. Kinematic, kinetic, and temporal parameterswere compared between the light and heavy balls. [Results] Pitching heavy ballssignificantly increased the BRF to 9.2 N and maximum trunk rotation angular velocity to26.2°/sec, and decreased the ball speed to 1.4 m/sec and upper limb joint torqueefficiency and shoulder internal rotation angular velocity at the moment of ball releaseat 250.8°/sec. Furthermore, the peak temporal kinetic parameters until ball releaseappeared early in the throwing of the heavy ball. [Conclusion] Adult amateur pitchers whopitched heavy balls had greater BRF; had decreased upper limb joint torque efficiency,ball speed, and arm angular velocity; and reached maximum kinetics early. Adult amateurpitchers may be at risk of throwing injuries due to throwing of heavy balls. |
| ISSN | 09155287 |
| Volume Number | 32 |
| PubMed Central reference number | PMC7758614 |
| Issue Number | 12 |
| PubMed reference number | 33362352 |
| Journal | Journal of Physical Therapy Science [J Phys Ther Sci] |
| e-ISSN | 21875626 |
| DOI | 10.1589/jpts.32.816 |
| Language | English |
| Publisher | The Society of Physical Therapy Science |
| Publisher Date | 2020-12-11 |
| Access Restriction | Open |
| Rights License | This is an open-access article distributed under the terms of the CreativeCommons Attribution Non-Commercial No Derivatives (by-nc-nd) License. (CC-BY-NC-ND 4.0:https://creativecommons.org/licenses/by-nc-nd/4.0/) 2020©by the Society of Physical Therapy Science. Published by IPECInc. |
| Subject Keyword | Baseball pitching Adult amateur Ball weight and biomechanics |
| Content Type | Text |
| Resource Type | Article |
| Subject | Physical Therapy, Sports Therapy and Rehabilitation |
