Motion Analysis Focusing on Rotational Movements of Professional Female Baseball Pitchers: Comparison with Male University Baseball Pitchers

Yoshikazu Azuma, Tomoyuki Matsui, Machiko Hiramoto, Ruo Hashimoto, Kanta Matsuzawa, Tetsuya Miyazaki, Kazuya Seo, Yuya Watanabe, Noriyuki Kida, Yoshihiro Kai and Toru Morihara
Additional contact information
Yoshikazu Azuma: Marutamachi Rehabilitation Clinic, Kyoto 604-8405, Japan
Tomoyuki Matsui: Marutamachi Rehabilitation Clinic, Kyoto 604-8405, Japan
Machiko Hiramoto: Marutamachi Rehabilitation Clinic, Kyoto 604-8405, Japan
Ruo Hashimoto: Marutamachi Rehabilitation Clinic, Kyoto 604-8405, Japan
Kanta Matsuzawa: Marutamachi Rehabilitation Clinic, Kyoto 604-8405, Japan
Tetsuya Miyazaki: Marutamachi Rehabilitation Clinic, Kyoto 604-8405, Japan
Kazuya Seo: Rehabilitation Unit, University Hospital, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan
Yuya Watanabe: Faculty of Health and Sports Science, Doshisha University, Kyotanabe 610-0394, Japan
Noriyuki Kida: Department of Biotechnology, Graduate School of Science and Technology, Kyoto Institute of Technology, Kyoto 606-8585, Japan
Yoshihiro Kai: Department of Physical Therapy, Faculty of Health Sciences, Kyoto Tachibana University, Kyoto 607-8175, Japan
Toru Morihara: Marutamachi Rehabilitation Clinic, Kyoto 604-8405, Japan

IJERPH, 2021, vol. 18, issue 24, 1-10

Abstract: Purpose: The purpose of this study was to compare pitching motion of the professional female baseball pitchers with the male university baseball pitchers focused on the pelvic and thoracic movements. Subjects and methods: The participants were 15 healthy professional female baseball pitchers (11 right-handers and 4 left-handers; age, 21.7 ± 3.2 years; height, 162.5 ± 5.1 cm; weight, 59.0 ± 6.6 kg) and 14 healthy male university baseball pitchers (12 right-handers and 2 left-handers; age, 19.9 ± 0.8 years; height, 176.4 ± 3.0 cm; body mass, 73.1 ± 3.0 kg). Throwing motion was captured by three-dimensional motion analysis system. Kinematic data of the lead hip, pelvis, thorax, and dominant shoulder were collected and the joint angle at maximum external rotation phase and ball release phase were compared. Results: The female baseball pitchers rotated pelvis and thorax more than the male at the maximum external rotation phase and ball release phase ( p < 0.05). At the same, the pelvis and thorax of the female baseball pitchers were tilted significantly closer to horizontal plane than the male ( p < 0.05). The pelvis and thorax of the male baseball pitchers was tilted to non-dominant lateral side. Conclusions: The results of this study indicate that the pelvic and thoracic movements of the professional female baseball pitchers was different from male university pitchers.

Keywords: kinematic data; pelvis; thorax; lateral tilt (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2021
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