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Original Article

Comparative kinematic analysis of the baseball pitching motions of high school athletes in relation to pitching conditions

원문정보

Sang-Jin Yoon, Kazunori Irie, Dae-Young Kim, Tae-Jin Park

한국운동재활학회 JER Vol.14 No.3 2018.06 pp.424-429
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초록

영어

To analyze changes in pitching motions in relation to pitching conditions during practice versus game comparatively, seven high school over-throwing pitchers served as subjects in this study, who then performed pitches in various conditions. Data were processed using the statistical analysis program SPSS 21.0, and the moving distances and angles of the joints at the point of ball release were analyzed using repeated measurements one-way analysis of variance, followed by Bonferroni post hoc tests. Statistical significance was determined at P<0.05, and the following conclusion was obtained. According to the pitching con-ditions, the elbow joint was lengthened, and the torso leaned towards the nonpitching arm during pitching. Further, the pitching stride in-creased, causing the forward transfer of the landing foot and the pitch-ing hand. Based on these observations, it is important to establish a pitching training method that minimizes inconsistency in pitching mo-tions by simulating game-like conditions during pitching practices and developing various training programs. Further investigation is required for a comprehensive mechanical analysis of muscle usage and damage in pitching motions in relation to various pitching conditions.

목차

Abstract
 INTRODUCTION
 MATERIALS AND METHODS
  Subjects
  Experimental setup and procedure
  Data collection and analysis
 RESULS
  Moving distances of the joints in relation to the pitching conditions
  Angles of the shoulders and elbows during pitching in relation to the conditions
 DISCUSSION
 CONFLICT OF INTEREST
 ACKNOWLEDGMENTS
 REFERENCES

저자정보

  • Sang-Jin Yoon Graduate School of Health and Sport Science, Nippon Sport Science University, Tokyo, Japan
  • Kazunori Irie Graduate School of Health and Sport Science, Nippon Sport Science University, Tokyo, Japan
  • Dae-Young Kim Department of Sports Healthcare, College of Humanities & Social Sciences, Inje University, Gimhae, Korea
  • Tae-Jin Park Department of Sports Healthcare, College of Humanities & Social Sciences, Inje University, Gimhae, Korea

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