Differences in the Kinematics of the Baseball Swing between Hitters of Varying Skill

Publisher:
American College of Sports Medicine (ACSM)
Publication Type:
Journal Article
Citation:
Medicine and Science in Sports and Exercise, 2011, 43 (6), pp. 1050 - 1054
Issue Date:
2011-06
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Differences in the Kinematics of the Baseball Swing between Hitters of Varying Skill. Med. Sci. Sports Exerc., Vol. 43, No. 6, pp. 10501054, 2011. Purpose: The aim of this study was to determine differences in bat swing kinematics in baseball hitters of varying ability. Methods: Kinematic data for the upper and lower body were collected from 20 trained male baseball players (22.3 T 5.3 yr, 1.82 T 0.07 m, 83.5 T 10.9 kg), using three-dimensional computerized motion-analysis techniques. Participants were ranked before testing based on a novel coachs rating scale and seasonal batting average. They were subsequently separated into a relatively high-caliber group of hitters (n = 10) and a relatively low-caliber group of hitters (n = 10) for comparison. Importantly, the two groups were significantly different in terms of coachs rating (P G 0.01) and batting average (P G 0.05). Results: The results showed a significant difference in maximum bat swing velocity (P G 0.05) with high-caliber hitters having a higher velocity (36.8 mIsj1) in comparison with relatively low-caliber hitters (33.8 mIsj1). Lead elbow maximum angular velocity was significantly higher (35.9%) among relatively high-caliber hitters (P G 0.05). Angular velocity of the hip segment approached significance between the groups (P = 0.056). High-caliber hitters also had a right knee angle of 106- at ball contact, which was significantly (P G 0.05) higher than that of relatively low-caliber hitters (100-).
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