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KMID : 1151220230290020039
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Journal of Korean Academy of Orthopedic Manual Therapy
2023 Volume.29 No. 2 p.39 ~ p.48
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Comparative Analysis of Upper Extremities Muscle Activity during Baseball Pitching in Middle and High School Baseball Players
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Park Chan-Hee
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Abstract
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Background: The position of pitcher requires a lot of repetitive motion, and because of this, it is known that not only professional baseball players, but also middle and high school players are frequently exposed to injuries in baseball. The purpose of this study is to examine the differences in upper extremity muscle activity during repeated pitching and the activity of each muscle during repeated pitching by analyzing middle and high school pitchers, divided into groups by age.
Methods: Twenty participants (10 middle school male students and 10 high school male students) were recruited for this research. The outcome measures included neuromuscular motor control, including the upper trapezius (UT), triceps brachii (TB), deltoid (DT), latissimus dorsi (LD), biceps brachii (BB), pectoralis major(PM), extensor carpi radialis(ER), and flexor carpi radialis (FR).
Results: The two-way analysis of varaince (ANOVA) was used to compare the muscle activity variables between the middle school and high school students. The one-way ANOVA was used to compare the muscle activity variables within time differences each groups.
Conclusion: Our results provided promising clinical evidence that guide for upper extremity muscles to increase pitching efficiency in middle and high school base ball players.
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KEYWORD
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Pitching, Biomechanics, Electromyography, Muscle Activity, Upper Extremity
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