Vol 11, Issue 4

The Effects of Medicine Ball Training on Bat Swing Velocity in Prepubescent Softball Players

June 15, 2018 - By 

Authors

Mallory S. Kobak, The University of Akron
Michael J. Rebold, Hiram College
Stacey L. Buser, The University of Akron
Rachele M. Kappler, The University of Akron
Ronald Otterstetter, The University of Akron
International Journal of Exercise Science 11(4): 75-83, 2018.
DOI: 10.70252/DLBR3164

Abstract

The purpose of this study was to assess the effects of an 8-week medicine ball training program on bat swing velocity in prepubescent softball players. Twenty-seven female prepubescent softball players (age = 10.2 ± 1.2) participated in this study. Participants were randomly assigned to either a medicine ball training (MB = 13) or control (CON = 14) group. Pre- and post-testing consisted of 10 dry swings using the bat that the participants would normally use during competition, which was then followed by 10 hits off of a pitching machine with bat swing velocity being measured with each swing. During the 8 weeks of training, the MB group completed sport-specific medicine ball throws that were aimed at developing rotational velocity. Exercises included side medicine ball throws, Russian twists, woodchoppers, and standing band rotations. Participants that were 8-10 years old used a 4-lb medicine ball while 11-13 year olds used a 6-lb medicine ball during all exercises. Participants completed 1 set of 12 repetitions 2x/wk. There were no significant interaction effects (F = 1.91, p = 0.18) between both conditions (MB and CON) from pre- to post-testing for average bat swing velocity. Average bat swing velocity from pre- to post-testing for the MB group was 35.93 ± 6.66 miles×hour-1 and 38.22 ± 8.63 miles×hour-1, respectively. Average bat swing velocity from pre- to post-testing for the CON group was 36.07 ± 5.92 miles×hour-1 and 37.71 ± 4.42 miles×hour-1, respectively. Overall, there was a 6.37% and 4.55% increase in bat swing velocity from pre- to post-testing for the MB and CON groups, respectively. Therefore, medicine ball training offers no additional benefits in bat swing velocity.

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