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http://dx.doi.org/10.5103/KJSB.2012.22.1.001

Kinematic Analysis of Baseball Throw after 15 Weeks of Class  

Chun, Young-Jin (Department of Physical Education, College of Education, Seoul National University)
Shin, In-Sik (Department of Physical Education, College of Education, Seoul National University)
Publication Information
Korean Journal of Applied Biomechanics / v.22, no.1, 2012 , pp. 1-7 More about this Journal
Abstract
The purpose of this study was to investigate the pattern change of throwing in baseball after 15 weeks of participation in baseball class, by examining ball speed, trunk and upper body angles. The comparison was with 6 university students that haven't had any experience in baseball. 8 infra red cameras and 2 force platforms were used to collect the data. First, there was an increase in the speed of the ball after the class. Second, there was no significant difference in the allocated phases during the throw before and after class. Third, the release point was lower and more in front. Forth, there was an increase in the knee flexion at the left foot landing and release point. Finally, there was an increase in the maximum shoulder external rotation and pelvis angle. It is recommended that the coordination between the segments should be investigated to improve our understanding of the learning of throwing in future research.
Keywords
Baseball; Throw; Class; Kinematics;
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Times Cited By KSCI : 3  (Citation Analysis)
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